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1,072 results on '"SFR Condorcet"'

1. Covalent Grafting of Ruthenium Complexes on Iron Oxide Nanoparticles: Hybrid Materials for Photocatalytic Water Oxidation

Author: Pierre Lecante, Vincent Collière, Marc Respaud, Phong D. Tran, Quyen Nguyen, Van Nguyen, Jérôme Esvan, Karine Philippot, Wantana Klysubun, Catherine Amiens, Gilles Lemercier, Elodie Rousset, Laboratoire de chimie de coordination (LCC), Institut de Chimie de Toulouse (ICT), Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université de Toulouse (UT)-Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Centre National de la Recherche Scientifique (CNRS), University of Science and Technology of Hanoi (USTH), Institut de Chimie Moléculaire de Reims - UMR 7312 (ICMR), Université de Reims Champagne-Ardenne (URCA)-Institut de Chimie du CNRS (INC)-SFR CAP Santé (Champagne-Ardenne Picardie Santé), Université de Reims Champagne-Ardenne (URCA)-Université de Reims Champagne-Ardenne (URCA)-Centre National de la Recherche Scientifique (CNRS)-SFR Condorcet, Université de Reims Champagne-Ardenne (URCA)-Centre National de la Recherche Scientifique (CNRS)-Université de Reims Champagne-Ardenne (URCA)-Centre National de la Recherche Scientifique (CNRS), Centre d'élaboration de matériaux et d'études structurales (CEMES), Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT)-Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT)-Institut de Chimie de Toulouse (ICT), Université de Toulouse (UT)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Synchrotron Light Research Institute (SLRI), Centre interuniversitaire de recherche et d'ingenierie des matériaux (CIRIMAT), Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT), Laboratoire de physique et chimie des nano-objets (LPCNO), Université de Toulouse (UT)-Fédération de recherche « Matière et interactions » (FeRMI), Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT)-Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS), CNRS, Université de Toulouse Paul-Sabatier, Vietnam Academy of Science and Technology (grant D̵L0000.03/19-21), Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Institut de Chimie de Toulouse (ICT-FR 2599), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), University of sciences and technologies of hanoi (USTH), SFR Condorcet, Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS)-Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS)-SFR CAP Santé (Champagne-Ardenne Picardie Santé), Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Université de Reims Champagne-Ardenne (URCA)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie de Toulouse (ICT-FR 2599), Université Fédérale Toulouse Midi-Pyrénées-Institut de Chimie du CNRS (INC)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Institut de Chimie du CNRS (INC)-Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA), Centre National de la Recherche Scientifique (CNRS)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Institut de Chimie du CNRS (INC), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Institut de Chimie de Toulouse (ICT-FR 2599), Université Fédérale Toulouse Midi-Pyrénées-Institut de Chimie du CNRS (INC)-Institut de Recherche sur les Systèmes Atomiques et Moléculaires Complexes (IRSAMC), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS), Centre National de la Recherche Scientifique - CNRS (FRANCE), Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE), Institut National des Sciences Appliquées de Toulouse - INSA (FRANCE), Synchrotron Light Research Institute (THAILAND), Université Toulouse III - Paul Sabatier - UT3 (FRANCE), Université des Sciences et des Technologies de Hanoi - USTH (VIETNAM), Université de Reims - Champagne-Ardenne (FRANCE), Institut de Chimie Moléculaire de Reims - ICMR (Reims, France), and Centre Interuniversitaire de Recherche et d'Ingénierie des Matériaux - CIRIMAT (Toulouse, France)
Subjects: Materials science, Matériaux, Nanoparticle, chemistry.chemical_element, 02 engineering and technology, 010402 general chemistry, Photochemistry, 01 natural sciences, 7. Clean energy, Catalysis, [SPI.MAT]Engineering Sciences [physics]/Materials, Iron oxide nanoparticles, General Materials Science, Pendant group, Water oxidation catalysis, Ruthenium-based photosensitizer, 021001 nanoscience & nanotechnology, 0104 chemical sciences, Ruthenium, chemistry, Covalent bond, Photocatalysis, Hybrid photoanode, Reversible hydrogen electrode, 0210 nano-technology, Hybrid material, Covalent grafting
Abstract: International audience; The present environmental crisis prompts the search for renewable energy sources such as solar-driven production of hydrogen from water. Herein, we report an efficient hybrid photocatalyst for water oxidation, consisting of a ruthenium polypyridyl complex covalently grafted on core/shell Fe@FeOx nanoparticles via a phosphonic acid group. The photoelectrochemical measurements were performed under 1 sun illumination in 1 M KOH. The photocurrent density of this hybrid photoanode reached 20 μA/cm2 (applied potential of +1.0 V vs reversible hydrogen electrode), corresponding to a turnover frequency of 0.02 s–1. This performance represents a 9-fold enhancement of that achieved with a mixture of Fe@FeOx nanoparticles and a linker-free ruthenium polypyridyl photosensitizer. This increase in performance could be attributed to a more efficient electron transfer between the ruthenium photosensitizer and the Fe@FeOx catalyst as a consequence of the covalent link between these two species through the phosphonate pendant group.
Published: 2021
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2. Synergy between Indoloquinolines and Ciprofloxacin: An Antibiofilm Strategy against Pseudomonas aeruginosa

Author: Marius Colin, Emilie Charpentier, Ludovic Doudet, Sophie C. Gangloff, Fany Reffuveille, Ingrid Allart-Simon, Stéphane Gérard, Biomatériaux et inflammation en site osseux - EA 4691 (BIOS), Université de Reims Champagne-Ardenne (URCA)-Institut National de la Santé et de la Recherche Médicale (INSERM)-SFR CAP Santé (Champagne-Ardenne Picardie Santé), Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV), Université de Reims Champagne-Ardenne (URCA), Institut de Chimie Moléculaire de Reims - UMR 7312 (ICMR), SFR Condorcet, Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS)-Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS)-SFR CAP Santé (Champagne-Ardenne Picardie Santé), Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Université de Reims Champagne-Ardenne (URCA)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Université de Reims Champagne-Ardenne (URCA)-Institut de Chimie du CNRS (INC)-SFR CAP Santé (Champagne-Ardenne Picardie Santé), Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS)-SFR Condorcet, Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS)-Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS), and Colin, Marius
Subjects: Microbiology (medical), medicine.drug_class, [SDV]Life Sciences [q-bio], Antibiotics, synergy, RM1-950, medicine.disease_cause, Biochemistry, Microbiology, biofilm, 03 medical and health sciences, chemistry.chemical_compound, Antibiotic resistance, [CHIM] Chemical Sciences, medicine, [CHIM]Chemical Sciences, Pharmacology (medical), Crystal violet, General Pharmacology, Toxicology and Pharmaceutics, 030304 developmental biology, 0303 health sciences, biology, 030306 microbiology, Pseudomonas aeruginosa, Biofilm, indoloquinoline, biochemical phenomena, metabolism, and nutrition, biology.organism_classification, Antimicrobial, 3. Good health, Ciprofloxacin, [SDV] Life Sciences [q-bio], Infectious Diseases, chemistry, Therapeutics. Pharmacology, Bacteria, medicine.drug
Abstract: International audience; Antibiotic treatments can participate in the formation of bacterial biofilm in case of under dosage. The interest of indoloquinoline scaffold for drug discovery incited us to study the preparation of new indolo [2,3-b]quinoline derivatives by a domino radical process. We tested the effect of two different “indoloquinoline” molecules (Indol-1 and Indol-2) without antimicrobial activity, in addition to ciprofloxacin, on biofilm formation thanks to crystal violet staining and enumeration of adhered bacteria. This association of ciprofloxacin and Indol-1 or Indol-2 attenuated the formation of biofilm up to almost 80% compared to ciprofloxacin alone, or even prevented the presence of adhered bacteria. In conclusion, these data prove that the association of non-antimicrobial molecules with an antibiotic can be a solution to fight against biofilm and antibiotic resistance emergence.
Published: 2021
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3. Gradient of decomposition in sugarcane mulches of various thicknesses

Author: Guilherme Dietrich, Adriane Luiza Schu, Douglas Adams Weiler, Sandro José Giacomini, Patrick Leal Pinheiro, Mathias Roberto Leite Rambo, Sylvie Recous, Soils Department, Universidade Federal de Santa Maria (UFSM), Fractionnement des AgroRessources et Environnement - UMR-A 614 (FARE), Université de Reims Champagne-Ardenne (URCA)-Institut National de la Recherche Agronomique (INRA)-SFR Condorcet, Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS)-Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS), Institut National de la Recherche Agronomique (INRA), Brazil government through the Conselho Nacional de Desenvolvimento Cientifico e Tecnologico (CNPq), Brazil government through the Coordenacao de Aperfeicoamento de Pessoal de Nivel Superior (CAPES), Institut National de la Recherche Agronomique (INRA) - Environment & Agronomy Division, Program CNPq-Ciencia sem Fronteiras 208415/2017-3, Fractionnement des AgroRessources et Environnement (FARE), Université de Reims Champagne-Ardenne (URCA)-Institut National de la Recherche Agronomique (INRA), Université de Reims Champagne-Ardenne (URCA)-SFR Condorcet, Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS)-Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS)-Institut National de la Recherche Agronomique (INRA), and Universidade Federal de Santa Maria = Federal University of Santa Maria [Santa Maria, RS, Brazil] (UFSM)
Subjects: Crop residue, Materials science, [SDV]Life Sciences [q-bio], décomposition, Soil Science, chemistry.chemical_element, engineering.material, sugarcane, paillis, pluviométrie, Dry matter, Water content, Chemical composition, Earth-Surface Processes, 2. Zero hunger, mulch, Brasil, 04 agricultural and veterinary sciences, dynamique de l'eau, 15. Life on land, Straw, Nitrogen, chemistry, Agronomy, crop residue, 040103 agronomy & agriculture, engineering, rainfall rate recording, 0401 agriculture, forestry, and fisheries, Fertilizer, straw mulches, Agronomy and Crop Science, Mulch, canne à sucre, évaporation
Abstract: Crop residues left on the soil surface as mulch influence many services provided in agrosystems, particularly soil protection, water dynamics and nutrient fluxes. For a given crop, the residue mass influences the mulch thickness, but the effect of thickness on decomposition is not well understood, and decomposition gradients within mulches in the field have not been described. This study aimed to quantify the decomposition of sugarcane straw mulches by varying their mass and thickness and determine the decomposition gradient within the mulches. The experiment was conducted on a first-ratoon sugarcane crop for one year, with 4, 8 and 12 Mg straw dry matter ha(-1). Mulches were displayed in 0.16-m(2) litter boxes and formed by straw layers of equivalent mass, i.e., 4 Mg ha(-1), stacked either as a single layer (Low/Top layer), 2 layers (Low and Top layers) or 3 layers (Low, Middle and Top layers) to reconstitute the 3 mulch quantities. We quantified the carbon (C) and nitrogen (N) contents, the chemical composition and the water content of the remaining mulch particles in each layer 10 times within the 360 days. The mulch degradation rates were proportional to the initial amount of straw, the mulch losses representing 75% of its initial C and 46% of its initial N after one year, regardless of the initial mass. Fertilizer-N addition did not change the k decomposition rate, with k = 0.0044 d(-1). However the decomposition rate differed according to the layer position in the mulch, e.g., in the 12 Mg ha(-1) treatment k = 0.0064 d(-1) 0.0046 d(-1) and 0.0033 d(-1) for the low, middle and top layers, respectively, indicating that the low layers in contact with the soil decomposed faster than the top layers in contact with the atmosphere, while the medium layers demonstrated intermediate behaviour. The top layers evolved similarly, regardless of mulch thickness, while the lower layers in contact with the soil decomposed more quickly as the overlying straw thickness increased. Regardless of the thickness and position of a given layer within mulch, the one-year layer C loss was linearly correlated with the average water content of that layer over the year (y = 52.79 - 0694x, R-2 = 0.991, P < 0.05). Here, we demonstrate that the dynamics of mulch decomposition is primarily driven by the dynamics of water, which is itself driven by mulch characteristics, rain regime and evaporation.
Published: 2019
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4. Molecular and Material Engineering of Photocathodes Derivatized with Polyoxometalate-Supported {Mo3S4} HER Catalysts

Author: Bruno Fabre, Nathalie Leclerc-Laronze, Antoine Vacher, Cristelle Mériadec, Clément Falaise, Soraya Ababou-Girard, Francis Gouttefangeas, Jeoffrey Tourneur, Loïc Joanny, Emmanuel Cadot, Mohamed Haouas, Gabriel Loget, Emmanuel Guillon, Institut des Sciences Chimiques de Rennes (ISCR), Université de Rennes (UR)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Ecole Nationale Supérieure de Chimie de Rennes (ENSCR)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Institut de Physique de Rennes (IPR), Université de Rennes (UR)-Centre National de la Recherche Scientifique (CNRS), Synthèse Caractérisation Analyse de la Matière (ScanMAT), Université de Rennes (UR)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Centre de Microscopie Electronique à Balayage et microAnalyse (C.M.E.B.A.), Université de Rennes (UR), Institut Lavoisier de Versailles (ILV), Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Institut de Chimie Moléculaire de Reims - UMR 7312 (ICMR), Université de Reims Champagne-Ardenne (URCA)-Institut de Chimie du CNRS (INC)-SFR CAP Santé (Champagne-Ardenne Picardie Santé), Université de Reims Champagne-Ardenne (URCA)-Université de Reims Champagne-Ardenne (URCA)-Centre National de la Recherche Scientifique (CNRS)-SFR Condorcet, Université de Reims Champagne-Ardenne (URCA)-Centre National de la Recherche Scientifique (CNRS)-Université de Reims Champagne-Ardenne (URCA)-Centre National de la Recherche Scientifique (CNRS), ANR (Agence Nationale de la Recherche) [ANR-15-CE06-0002-01], University of Rennes 1, University of Versailles Saint Quentin, LabEx CHARMMMAT of University Paris-Saclay [ANR-11-LABX-0039], CNRS, ANR-11-IDEX-0003,IPS,Idex Paris-Saclay(2011), Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC)-Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Ecole Nationale Supérieure de Chimie de Rennes (ENSCR)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), Institut National des Sciences Appliquées (INSA)-Université de Rennes (UNIV-RENNES)-Institut National des Sciences Appliquées (INSA), Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Centre National de la Recherche Scientifique (CNRS), Centre National de la Recherche Scientifique (CNRS)-Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Institut de Chimie du CNRS (INC), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES), SFR Condorcet, Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS)-Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS)-SFR CAP Santé (Champagne-Ardenne Picardie Santé), and Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Université de Reims Champagne-Ardenne (URCA)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)
Subjects: [PHYS]Physics [physics], Thesaurus (information retrieval), Chemistry, Nanotechnology, General Chemistry, 010402 general chemistry, 01 natural sciences, Biochemistry, Catalysis, 0104 chemical sciences, Molecular engineering, Search engine, Colloid and Surface Chemistry, Polyoxometalate, [CHIM]Chemical Sciences
Abstract: International audience; Molecular engineering of efficient HER catalysts is an attractive approach for controlling the spatial environment of specific building units selected for their intrinsic functionality required within the multistep HER process. As the {Mo 3 S 4 } core derived as various coordination complexes has been identified as one as the most promising MoS x-based HER electrocatalysts, we demonstrate that the covalent association between the {Mo 3 S 4 } core and the redox-active macrocyclic {P 8 W 48 } polyoxometalate (POM) produces a striking synergistic effect featured by high HER performance. Various experiments carried out in homogeneous conditions showed that this synergistic effect arises from the direct connection between the {Mo 3 S 4 } cluster and the toroidal {P 8 W 48 } units featured by a stoichiometry which can be tuned from two to four {Mo 4 S 4 } cores per {P 8 W 48 } unit. In addition, we report that this effect is preserved within heterogeneous photoelectrochemical devices where the {Mo 3 S 4 }-{P 8 W 48 } (thio-POM) assembly was used as co-catalyst (cocat) onto a microstructured p-type silicon. Using drop-casting procedure to immobilize cocat onto the silicon interface led to high initial HER performance under simulated sunlight achieving a photocurrent density of 10 mA.cm-2 at +0.13 V vs RHE. Furthermore, electrostatic incorporation of the thio-POM anion cocat into a poly(3,4-ethylenedioxythiophene) (PEDOT) film is demonstrated to be efficient and straightforward to durably retain the cocat at the interface of a micropyramidal silicon (SimPy) photocathode. The thio-POM/PEDOT-modified photocathode is able to produce H 2 under 1 Sun illumination at a rate of ca. 100 µmol cm-2 h-1 at 0 V vs RHE, highlighting the excellent performance of this photoelectrochemical system.
Published: 2019
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5. Accelerating Metabolite Identification in Natural Product Research : Toward an Ideal Combination of Liquid Chromatography-High-Resolution Tandem Mass Spectrometry and NMR Profiling, in Silico Databases, and Chemometrics

Author: Jean-Hugues Renault, Jean-Marc Nuzillard, Jean-Luc Wolfender, Justin J. J. van der Hooft, Samuel Bertrand, Pharmaceutical Technology, École de Pharmacie Genève - Lausanne (EPGL), University of Geneva [Switzerland]-Université de Lausanne (UNIL), Chimie des Substances Naturelles (ICMRCSN), Institut de Chimie Moléculaire de Reims - UMR 7312 (ICMR), SFR Condorcet, Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS)-Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS)-SFR CAP Santé (Champagne-Ardenne Picardie Santé), Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Université de Reims Champagne-Ardenne (URCA)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-SFR Condorcet, Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Université de Reims Champagne-Ardenne (URCA)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Wageningen University and Research [Wageningen] (WUR), Mer, molécules et santé EA 2160 (MMS), Université de Nantes - UFR des Sciences Pharmaceutiques et Biologiques, Université de Nantes (UN)-Université de Nantes (UN)-Le Mans Université (UM)-Université de Nantes - UFR des Sciences et des Techniques (UN UFR ST), and Université de Nantes (UN)-Université de Nantes (UN)
Subjects: 0301 basic medicine, Magnetic Resonance Spectroscopy, Bioinformatics, In silico, Metabolite, High resolution, Tandem mass spectrometry, 01 natural sciences, Analytical Chemistry, Database, Chemometrics, 03 medical and health sciences, chemistry.chemical_compound, Metabolite profiling, Tandem Mass Spectrometry, [CHIM.ANAL]Chemical Sciences/Analytical chemistry, Bioinformatica, Metabolome, Metabolomics, Life Science, Chromatography, High Pressure Liquid, Metabolite annotation, Biological Products, Natural products, Chromatography, Chemistry, 010401 analytical chemistry, Dereplication, NMR, LC-MS, 0104 chemical sciences, 030104 developmental biology, in silico, Natural Product Research, Databases, Chemical, [CHIM.CHEM]Chemical Sciences/Cheminformatics
Abstract: International audience; The rapid innovations in metabolite profiling, bioassays and chemometrics have led to a paradigm shift in natural product (NP) research. Indeed, having partial or full structure information about possibly “all” specialized metabolites and an estimation of their levels in plants or microorganisms provides a way to perform pharmacognostic or chemical ecology investigations from a new and holistic perspective. The increasing amount of accurate metabolome data that can be acquired on massive sample sets, notably through data-dependent LC-HRMS/MS and NMR profiling, allows the mapping of natural extracts at an unprecedented level of precision.Most progress made recently in accelerating metabolite identification has been pushed by the need for metabolomics to have tools that provide a confident annotation of the biomarkers highlighted as the results of data mining through multivariate analysis, often on important datasets of complexsamples. Historically, NP chemists have been involved in the unambiguous full de novo identification of unknown compoundsfrom complex natural biological matrices. This process is classically performed by the tedious isolation of pure bioactive NPs through comprehensive bioactivity-guided isolation workflows involving orthogonal chromatographic steps at the preparative level. Increasingly advanced metabolomics metabolite profiling methods are of strategic importance in dereplication workflows in NP research as well as for the full metabolome composition assignment of relevant organisms from both drug discovery and chemical ecology perspectives.In this review, we describe the latest developments in metabolite profiling by both LC-MS and NMRbased methods and related databases from a natural product chemist perspective. We assess the current possibilities and limits of such methods and the workflows for manual and automated NPannotations by equally treating the MS and NMR approaches that are both key for the “as confident as possible” NP annotation in crude natural extracts. We also propose future lines of development in the field that are important for NP research but are also generally needed for metabolite annotation in metabolomics because NPs represent perfect candidate compounds for identification due to their intrinsic structural complexity and chemodiversity across organisms. This review does not aim to provide a comprehensive survey of all metabolite profiling applications made in NP research to date. Typical case studies are discussed, and an update of a selection of the latest advanced original studies and numerous specialized reviews is made with links to tools and DBs regarded as useful for their current or future usage in NP research. Evaluations of what can be readily implemented and what is still required for confident NP structural elucidation are made, especially concerning access to generic structural and spectral DBs as well as the use of orthogonal detection methods for improved confidence in metabolite annotation.
Published: 2019
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6. Taxonomy-focused Natural Product Databases for Carbon-13 NMR-based Dereplication

Author: Jean-Marc Nuzillard, Institut de Chimie Moléculaire de Reims - UMR 7312 (ICMR), SFR Condorcet, Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS)-Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS)-SFR CAP Santé (Champagne-Ardenne Picardie Santé), Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Université de Reims Champagne-Ardenne (URCA)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Centre National de la Recherche Scientifique (CNRS)-Université de Reims Champagne-Ardenne (URCA)-SFR CAP Santé (Champagne-Ardenne Picardie Santé), Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-SFR Condorcet, and Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS)-Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS)
Subjects: analytical_chemistry, databases, natural products, Computer science, computer.software_genre, 01 natural sciences, Set (abstract data type), taxonomy, chemistry.chemical_compound, [CHIM.ANAL]Chemical Sciences/Analytical chemistry, Taxonomy (general), computer.programming_language, QD71-142, Natural product, Database, 010405 organic chemistry, General Medicine, Python (programming language), Carbon-13 NMR, dereplication, NMR, 0104 chemical sciences, 010404 medicinal & biomolecular chemistry, Taxon, chemistry, Scripting language, Identification (biology), Analytical chemistry, computer
Abstract: International audience; The recent revival of the study of organic natural products as renewable sources of medicinal drugs, cosmetics, dyes, and materials motivated the creation of general purpose structural databases. Dereplication, the efficient identification of already reported compounds, relies on the grouping of structural, taxonomic and spectroscopic databases that focus on a particular taxon (species, genus, family, order, etc.). A set of freely available python scripts, CNMR_Predict, is proposed for the quick supplementation of taxon oriented search results from the naturaL prOducTs occUrrences database (LOTUS, lotus.naturalproducts.net) with predicted carbon-13 nuclear magnetic resonance data from the ACD/Labs CNMR predictor and DB software (acdlabs.com) to provide easily searchable databases. The database construction process is illustrated using Brassica rapa as a taxon example
Published: 2021
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7. A dansyl-derivatized phytic acid analogue as a fluorescent substrate for phytases: experimental and computational approach

Author: Claude Plassard, Herve Quiquampoix, Patrick Chemardin, Josiane Abadie, Jean-Bernard Behr, Christophe Dussouy, Eric Dubreucq, Véronique Perrier, Institut de Chimie Moléculaire de Reims - UMR 7312 (ICMR), SFR Condorcet, Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS)-Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS)-SFR CAP Santé (Champagne-Ardenne Picardie Santé), Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Université de Reims Champagne-Ardenne (URCA)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Ingénierie des Agro-polymères et Technologies Émergentes (UMR IATE), Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro)-Université de Montpellier (UM)-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro), Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), Sciences Pour l'Oenologie (SPO), Université de Montpellier (UM)-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro), Ecologie fonctionnelle et biogéochimie des sols et des agro-écosystèmes (UMR Eco&Sols), Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Institut de Recherche pour le Développement (IRD)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro)-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro), UNLOCKP project, ANR-11-BSV7-0015,UNLOCKP,Mobilisation des réserves de Phytate du sol : quelles sont les clefs nécessaires pour accéder au phosphore de ce trésor ?(2011), Université de Reims Champagne-Ardenne (URCA)-Institut de Chimie du CNRS (INC)-SFR CAP Santé (Champagne-Ardenne Picardie Santé), Université de Reims Champagne-Ardenne (URCA)-Université de Reims Champagne-Ardenne (URCA)-Centre National de la Recherche Scientifique (CNRS)-SFR Condorcet, Université de Reims Champagne-Ardenne (URCA)-Centre National de la Recherche Scientifique (CNRS)-Université de Reims Champagne-Ardenne (URCA)-Centre National de la Recherche Scientifique (CNRS), Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Université de Montpellier (UM)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Institut Agro - Montpellier SupAgro, Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro), Université de Montpellier (UM)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Institut Agro - Montpellier SupAgro, and Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Institut de Recherche pour le Développement (IRD)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Institut Agro - Montpellier SupAgro
Subjects: Models, Molecular, Phytic Acid, Biocompatibility, Phosphate, 01 natural sciences, Biochemistry, Substrate Specificity, Catalysis, chemistry.chemical_compound, Soil, Fertilizer, Artificial substrate, Drug Discovery, PEG ratio, Inositol, [SDV.BBM]Life Sciences [q-bio]/Biochemistry, Molecular Biology, Molecular Biology, Fluorescent Dyes, 6-Phytase, Phytic acid, Inositol-phosphates, Molecular Structure, 010405 organic chemistry, Chemistry, Organic Chemistry, Substrate (chemistry), Combinatorial chemistry, 0104 chemical sciences, 010404 medicinal & biomolecular chemistry, Kinetics, Phosphatidylcholines, Linker, Phytases, Fluorescent tag
Abstract: International audience; A new myo-inositol pentakisphosphate was synthesized, which featured a dansyl group at position C-5. The fluorescent tag was removed from the inositol by a 6-atom spacer to prevent detrimental steric interactions in the catalytic site of phytases. The PEG linker was used in order to enhance hydrophilicity and biocompatibility of the new artificial substrate. Computational studies showed a favorable positioning in the catalytic site of phytases. Enzymatic assays demonstrated that the tethered myo-inositol was processed by two recombinant phytases Phy-A and Phy-C, classified respectively as acid and alkaline phytases, with similar rates of phosphate release compared to their natural substrate.
Published: 2021
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8. Engineering of ultra-small diagnostic nanoprobes through oriented conjugation of single-domain antibodies and quantum dots

Author: Igor Nabiev, Alyona Sukhanova, Klervi Even-Desrumeaux, Patrick Chames, Daniel Baty, Mikhail Artemyev, Vladimir Oleinikov, Laboratoire de Recherche en Nanosciences - EA 4682 (LRN), Université de Reims Champagne-Ardenne (URCA)-SFR CAP Santé (Champagne-Ardenne Picardie Santé), Université de Reims Champagne-Ardenne (URCA)-Université de Reims Champagne-Ardenne (URCA)-SFR Condorcet, Université de Reims Champagne-Ardenne (URCA)-Centre National de la Recherche Scientifique (CNRS)-Université de Reims Champagne-Ardenne (URCA)-Centre National de la Recherche Scientifique (CNRS), Centre de Recherche en Cancérologie de Marseille (CRCM), Aix Marseille Université (AMU)-Institut Paoli-Calmettes, Fédération nationale des Centres de lutte contre le Cancer (FNCLCC)-Fédération nationale des Centres de lutte contre le Cancer (FNCLCC)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), Belarusian State University, Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry (IBCh RAS), Russian Academy of Sciences [Moscow] (RAS), European Project: 246479,EC:FP7:NMP,FP7-NMP-2009-LARGE-3,NAMDIATREAM(2010), SFR Condorcet, Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS)-Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS)-Université de Reims Champagne-Ardenne (URCA)-SFR CAP Santé (Champagne-Ardenne Picardie Santé), Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV), Centre National de la Recherche Scientifique (CNRS)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Institut Paoli-Calmettes, Fédération nationale des Centres de lutte contre le Cancer (FNCLCC)-Fédération nationale des Centres de lutte contre le Cancer (FNCLCC)-Aix Marseille Université (AMU), Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-SFR Condorcet, Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS)-Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS), Nabiev, Igor, and NANOTECHNOLOGICAL TOOLKITS FOR MULTI-MODAL DISEASE DIAGNOSTICS AND TREATMENT MONITORING - NAMDIATREAM - - EC:FP7:NMP2010-07-01 - 2014-06-30 - 246479 - VALID
Subjects: medicine.drug_class, [SPI.NANO] Engineering Sciences [physics]/Micro and nanotechnologies/Microelectronics, Nanoparticle, Nanotechnology, quantum dots, 02 engineering and technology, Conjugated system, 010402 general chemistry, Monoclonal antibody, 01 natural sciences, Flow cytometry, [SDV.BBM.GTP]Life Sciences [q-bio]/Biochemistry, Molecular Biology/Genomics [q-bio.GN], [SDV.BBM] Life Sciences [q-bio]/Biochemistry, Molecular Biology, medicine, [SDV.BBM]Life Sciences [q-bio]/Biochemistry, Molecular Biology, [SPI.NANO]Engineering Sciences [physics]/Micro and nanotechnologies/Microelectronics, General Environmental Science, Plasmonic nanoparticles, diagnostic nanoprobes, Bioconjugation, medicine.diagnostic_test, cancer diagnostics, Chemistry, flow cytometry, single-domain antibodies, imaging, 021001 nanoscience & nanotechnology, 0104 chemical sciences, Quantum dot, immunohistochemistry, [SDV.BBM.GTP] Life Sciences [q-bio]/Biochemistry, Molecular Biology/Genomics [q-bio.GN], General Earth and Planetary Sciences, 0210 nano-technology, oriented conjugation, Conjugate
Abstract: International audience; Nanoparticle-based biodetection commonly employs monoclonal antibodies (mAbs) for targeting. Although several types of conjugates have been used for biomarker labeling, the large size of mAbs limits the number of ligands per nanoparticle, impedes their intratumoral distribution, and limits intracellular penetration. Furthermore, the conditions of mAb conjugation using conventional techniques provide nanoprobes with irregular orientation of mAbs on the nanoparticle surface and often provoke mAb unfolding. Here, we have developed a protocol to engineer ultrasmall diagnostic nanoprobes through directional conjugation of semiconductor quantum dots (QDs) with 13-kDa single-domain antibodies (sdAbs) derived from llama immunoglobulin G (IgG). sdAbs are conjugated with QDs in a highly oriented manner via an additional cysteine residue specifically integrated into the sdAb C-terminus. The resultant nanoprobes are
Published: 2021

9. Tuning the Regioselective Functionalization of Trifluoromethylated Dienes via Lanthanum‐Mediated Single C−F Bond Activation

Author: Yan Yang, Fabien Massicot, Marc Taillefer, Florian Jaroschik, Yassir Zaid, Dominique Harakat, Elodie Rousset, Laurent Maron, Sirine Sghaier, Jean-Bernard Behr, Tarun Kumar, Agathe Martinez, Xavier Le Goff, Institut de Chimie Moléculaire de Reims - UMR 7312 (ICMR), Université de Reims Champagne-Ardenne (URCA)-Institut de Chimie du CNRS (INC)-SFR CAP Santé (Champagne-Ardenne Picardie Santé), Université de Reims Champagne-Ardenne (URCA)-Université de Reims Champagne-Ardenne (URCA)-Centre National de la Recherche Scientifique (CNRS)-SFR Condorcet, Université de Reims Champagne-Ardenne (URCA)-Centre National de la Recherche Scientifique (CNRS)-Université de Reims Champagne-Ardenne (URCA)-Centre National de la Recherche Scientifique (CNRS), Institut Charles Gerhardt Montpellier - Institut de Chimie Moléculaire et des Matériaux de Montpellier (ICGM), Ecole Nationale Supérieure de Chimie de Montpellier (ENSCM)-Institut de Chimie du CNRS (INC)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de physique et chimie des nano-objets (LPCNO), Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT)-Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT)-Institut de Chimie de Toulouse (ICT), Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université de Toulouse (UT)-Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université de Toulouse (UT)-Fédération de recherche « Matière et interactions » (FeRMI), Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT)-Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS), Etude de la Matière en Mode Environnemental (L2ME), Institut de Chimie Séparative de Marcoule (ICSM - UMR 5257), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Ecole Nationale Supérieure de Chimie de Montpellier (ENSCM)-Institut de Chimie du CNRS (INC)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Ecole Nationale Supérieure de Chimie de Montpellier (ENSCM)-Institut de Chimie du CNRS (INC)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS), SFR Condorcet, Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS)-Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS)-SFR CAP Santé (Champagne-Ardenne Picardie Santé), Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Université de Reims Champagne-Ardenne (URCA)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Institut Charles Gerhardt Montpellier - Institut de Chimie Moléculaire et des Matériaux de Montpellier (ICGM ICMMM), Ecole Nationale Supérieure de Chimie de Montpellier (ENSCM)-Centre National de la Recherche Scientifique (CNRS)-Université de Montpellier (UM)-Université Montpellier 1 (UM1)-Université Montpellier 2 - Sciences et Techniques (UM2)-Institut de Chimie du CNRS (INC), Institut de Recherche sur les Systèmes Atomiques et Moléculaires Complexes (IRSAMC), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie de Toulouse (ICT-FR 2599), Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Institut de Chimie du CNRS (INC)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Institut de Chimie du CNRS (INC), and Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC)-Université de Montpellier (UM)-Ecole Nationale Supérieure de Chimie de Montpellier (ENSCM)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC)-Université de Montpellier (UM)-Ecole Nationale Supérieure de Chimie de Montpellier (ENSCM)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)
Subjects: chemistry.chemical_classification, Lanthanide, Diene, 010405 organic chemistry, Chemistry, Alkene, [CHIM.ORGA]Chemical Sciences/Organic chemistry, Organic Chemistry, Regioselectivity, chemistry.chemical_element, General Chemistry, [CHIM.CATA]Chemical Sciences/Catalysis, 010402 general chemistry, 01 natural sciences, Combinatorial chemistry, Catalysis, 0104 chemical sciences, Metal, chemistry.chemical_compound, visual_art, visual_art.visual_art_medium, Lanthanum, Stereoselectivity, Fulvene
Abstract: International audience; The development of new fluorine-containing building blocks and their efficient synthetic access is currently a challenging research field. Herein, the highly regio- and stereoselective addition of a large range of aldehydes onto trifluoromethylated benzofulvenes was achieved using a simple La/I2/DIBAL-Cl system via a selective C−F bond activation process. This versatile methodology provided homodienyl alcohols bearing a terminal CF2-alkene with potential further applications, as shown by the dehydration to the first benzofulvenes carrying a difluorovinyl group. In addition, for certain electron-poor aldehydes, unprecedented ipso substitution of the CF3 group in a diene was observed, which, according to DFT studies, is related to the presence of the large, Lewis-acidic lanthanum metal.
Published: 2021
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10. Molecular engineering for optical properties of 5-substituted-1,10-phenanthroline-based Ru(II) complexes

Author: Philippe C. Gros, Latévi Max Lawson-Daku, Mireille Blanchard-Desce, Gilles Lemercier, Olivier Mongin, Juliette Moreau, Marc Beley, Sylviane Chevreux, Elodie Rousset, Institut de Chimie Moléculaire de Reims - UMR 7312 (ICMR), SFR Condorcet, Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS)-Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS)-SFR CAP Santé (Champagne-Ardenne Picardie Santé), Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Université de Reims Champagne-Ardenne (URCA)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Institut des Sciences Chimiques de Rennes (ISCR), Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC)-Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Ecole Nationale Supérieure de Chimie de Rennes (ENSCR)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), Institut National des Sciences Appliquées (INSA)-Université de Rennes (UNIV-RENNES)-Institut National des Sciences Appliquées (INSA), Université de Genève (UNIGE), Laboratoire Lorrain de Chimie Moléculaire (L2CM), Institut de Chimie du CNRS (INC)-Université de Lorraine (UL)-Centre National de la Recherche Scientifique (CNRS), Ecole Nationale Supérieure de Chimie de Paris - Chimie ParisTech-PSL (ENSCP), Université Paris sciences et lettres (PSL), Institut des Sciences Moléculaires (ISM), Université Montesquieu - Bordeaux 4-Université Sciences et Technologies - Bordeaux 1-École Nationale Supérieure de Chimie et de Physique de Bordeaux (ENSCPB)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Université de Reims Champagne-Ardenne (URCA)-Institut de Chimie du CNRS (INC)-SFR CAP Santé (Champagne-Ardenne Picardie Santé), Université de Reims Champagne-Ardenne (URCA)-Université de Reims Champagne-Ardenne (URCA)-Centre National de la Recherche Scientifique (CNRS)-SFR Condorcet, Université de Reims Champagne-Ardenne (URCA)-Centre National de la Recherche Scientifique (CNRS)-Université de Reims Champagne-Ardenne (URCA)-Centre National de la Recherche Scientifique (CNRS), Université de Rennes (UR)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Ecole Nationale Supérieure de Chimie de Rennes (ENSCR)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Université de Genève = University of Geneva (UNIGE), Université Montesquieu - Bordeaux 4-Université Sciences et Technologies - Bordeaux 1 (UB)-École Nationale Supérieure de Chimie et de Physique de Bordeaux (ENSCPB)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), and PRC-CE07-033 IsoGate Grant, Agence Nationale de la Recherche
Subjects: 010405 organic chemistry, Ligand, Phenanthroline, Charge (physics), 010402 general chemistry, 01 natural sciences, Redox, 0104 chemical sciences, Molecular engineering, Inorganic Chemistry, [CHIM.THEO]Chemical Sciences/Theoretical and/or physical chemistry, Crystallography, chemistry.chemical_compound, chemistry, [CHIM.COOR]Chemical Sciences/Coordination chemistry, Absorption (chemistry)
Abstract: International audience; A series of homo- and heteroleptic Ru(II) complexes [Ru(phen)3−n(phen-X)n](PF6)2 (n = 0–3, X = CN, epoxy, H, NH2) were prepared and characterized. The influence of electron-withdrawing or electron-releasing substituents of the 1,10-phenanthroline ligands on the photo-physical properties was evaluated. It reveals fundamental interests in the fine tuning of redox potentials and photo-physical characteristics, depending both on the nature of the substitution of the ligand, and on the symmetry of the related homo- or heteroleptic complex. These complexes exhibit linear absorption and two-photon absorption (2PA) cross-sections over a broad range of wavelength (700–900 nm) due to absorption in the intra-ligand charge transfer (ILCT) and the metal-to-ligand charge transfer (MLCT) bands. These 2PA properties were more particularly investigated in the 700–1000 spectral range for a family of complexes bearing electro-donating ligands (phen-NH2).
Published: 2021
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11. An optimized LC-HRMS untargeted metabolomics workflow for multi-matrices investigations in the three-spined stickleback

Author: Emmanuelle Lebeau-Roche, Gaëlle Daniele, Aurélie Fildier, Cyril Turies, Odile Dedourge-Geffard, Jean-Marc Porcher, Alain Geffard, Emmanuelle Vulliet, TRACES - Technologie et Recherche en Analyse Chimique pour l'Environnement et la Santé, Institut des Sciences Analytiques (ISA), Institut de Chimie du CNRS (INC)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS), Stress Environnementaux et BIOsurveillance des milieux aquatiques (SEBIO), Institut National de l'Environnement Industriel et des Risques (INERIS)-Université de Reims Champagne-Ardenne (URCA)-Université Le Havre Normandie (ULH), Normandie Université (NU)-Normandie Université (NU)-SFR Condorcet, Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS)-Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS), Institut National de l'Environnement Industriel et des Risques (INERIS), Université Le Havre Normandie (ULH), Normandie Université (NU)-Normandie Université (NU)-Université de Reims Champagne-Ardenne (URCA)-SFR Condorcet, and Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS)-Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS)-Institut National de l'Environnement Industriel et des Risques (INERIS)
Subjects: Gills, Male, Ionization, Respiratory System, RPLC, Biochemistry, Mass Spectrometry, Workflow, Metabolites, Medicine and Health Sciences, Animal Anatomy, HILIC, Gasterosteus aculeatus, ComputingMilieux_MISCELLANEOUS, Chemical Reactions, Eukaryota, Brain, Smegmamorpha, Chemistry, Liver, Osteichthyes, Physical Sciences, Vertebrates, [SDE]Environmental Sciences, Amino Acid Analysis, Metabolome, Medicine, Female, Anatomy, Research Article, Fish Biology, Science, Research and Analysis Methods, [CHIM.ANAL]Chemical Sciences/Analytical chemistry, Alkanes, Metabolomics, Animals, [CHIM]Chemical Sciences, Molecular Biology Techniques, Molecular Biology, three-spined stickleback, Sticklebacks, Molecular Biology Assays and Analysis Techniques, Organisms, Chemical Compounds, LC-QToF, Biology and Life Sciences, Hydrocarbons, untargeted metabolomics, Metabolism, Fish, Aquatic Respiratory Anatomy, Zoology, Chromatography, Liquid
Abstract: Environmental metabolomics has become a growing research field to understand biological and biochemical perturbations of organisms in response to various abiotic or biotic stresses. It focuses on the comprehensive and systematic analysis of a biologic system's metabolome. This allows the recognition of biochemical pathways impacted by a stressor, and the identification of some metabolites as biomarkers of potential perturbations occurring in a body. In this work, we describe the development and optimization of a complete reliable methodology based on liquid chromatography coupled to high resolution mass spectrometry (LC-HRMS) for untargeted metabolomics studies within a fish model species, the three-spined stickleback (Gasterosteus aculeatus). We evaluated the differences and also the complementarities between four different matrices (brain, gills, liver and whole fish) to obtain metabolome information. To this end, we optimized and compared sample preparation and the analytical method, since the type and number of metabolites detected in any matrix are closely related to these latter. For the sample preparation, a solid-liquid extraction was performed on a low quantity of whole fish, liver, brain, or gills tissues using combinations of methanol/water/heptane. Based on the numbers of features observed in LC-HRMS and on the responses of analytical standards representative of different metabolites groups (amino acids, sugars…), we discuss the influence of the nature, volume, and ratio of extraction solvents, the sample weight, and the reconstitution solvent. Moreover, the analytical conditions (LC columns, pH and additive of mobile phases and ionization modes) were also optimized so as to ensure the maximum metabolome coverages. Thus, two complementary chromatographic procedures were combined in order to cover a broader range of metabolites: a reversed phase separation (RPLC) on a C18 column followed by detection with positive ionization mode (ESI+) and a hydrophilic interaction chromatography (HILIC) on a zwitterionic column followed by detection with negative ionization mode (ESI-). This work provides information on brain, gills, liver, vs the whole body contribution to the stickleback metabolome. These information would help to guide ecotoxicological and biomonitoring studies.
Published: 2021
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12. Pilot continuous centrifugal liquid-liquid extraction of extra virgin olive oil biophenols and gram-scale recovery of pure oleocanthal, oleacein, MFOA, MFLA and hydroxytyrosol

Author: Lemonia Antoniadi, Apostolis Angelis, Dimitris Michailidis, Panagiotis Stathopoulos, Leandros Skaltsounis, Jean-Marc Nuzillard, Jean-Hugues Renault, Vasiliki Tsantila, Department of Pharmaceutical Technology, National and Kapodistrian University of Athens, Institut de Chimie Moléculaire de Reims - UMR 7312 (ICMR), Centre National de la Recherche Scientifique (CNRS)-Université de Reims Champagne-Ardenne (URCA)-SFR CAP Santé (Champagne-Ardenne Picardie Santé), Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-SFR Condorcet, Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS)-Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS), Department of Pharmacognosy and Chemistry of Natural Products, National and Kapodistrian University of Athens (NKUA), SFR Condorcet, Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS)-Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS)-SFR CAP Santé (Champagne-Ardenne Picardie Santé), and Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Université de Reims Champagne-Ardenne (URCA)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)
Subjects: Oleacein, Oleocanthal, Filtration and Separation, Fractionation, 010501 environmental sciences, Centrifugal extractor, 01 natural sciences, High-performance liquid chromatography, Analytical Chemistry, 03 medical and health sciences, chemistry.chemical_compound, [CHIM.GENI]Chemical Sciences/Chemical engineering, Oleuropein, [CHIM.ANAL]Chemical Sciences/Analytical chemistry, Extra virgin olive oil, [SDV.IDA]Life Sciences [q-bio]/Food engineering, ComputingMilieux_MISCELLANEOUS, 030304 developmental biology, 0105 earth and related environmental sciences, 0303 health sciences, Chromatography, Extraction (chemistry), Centrifugal partition chromatography, Continuous liquid-liquid extraction, Aglycone, chemistry, Annular centrifugal extractor, Hydroxytyrosol
Abstract: International audience; This study provides an efficient pilot-scale liquid-liquid extraction process for the recovery of total phenolic fraction (TPF) from extra virgin olive oil (EVOO) and the further purification of the major TPF constituents (oleocanthal, oleacein, monoaldehydic form of oleuropein aglycone, monoaldehydic form of ligstroside aglycone and hydroxytyrosol) using successively centrifugal partition chromatography and reversed phase high performance liquid chromatography. Special attention was paid for the selection of the appropriate raw material, which should be rich in the targeted high-value compounds. For the extraction of the selected EVOOs, a green technique based on liquid-liquid partitioning using the biphasic system n-Hept/EVOO/EtOH/H2O 3:2:3:2 v/v was carried out, first on pioneering laboratory-scale annular centrifugal extractor (ACE) and then on pilot device. 240 L from three different EVOOs (3x80 L of each EVOO) were extracted yielding 285 g of TPF in approximately 2 h. The second step of this procedure was the purification of the target compounds. A preparative centrifugal partition chromatography (CPC) process was firstly applied for the initial TPF fractionation using a step gradient elution-extrusion method with a series of 4 biphasic systems composed of n-Hept/EtOAc/EtOH/H2O in ratios 4:1:3:2, 3:2:3:2, 2:3:3:2 and 1:4:3:2 (v/v/v/v). Preparative reversed phase high performance liquid chromatography (prep-RP-HPLC) was then carried out to polish the target compounds from the enriched CPC fractions resulting in purity higher than 97%. In parallel, the above purification analysis led to the isolation of four minor TPF constituents of which three are new natural products (EDA lactone, (1R, 8E)-1-ethoxy-ligstroside aglycon and (1S, 8E)-1-ethoxy-ligstroside aglycon) and one ((9E, 11E)-13-oxotrideca-9,11-diencoic acid) is described for the first time as EVOO constituent.
Published: 2021
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13. Photochemical radical cyclization reactions with imines, hydrazones, oximes and related compounds

Author: Mohammed Latrache, Norbert Hoffmann, Institut de Chimie Moléculaire de Reims - UMR 7312 (ICMR), SFR Condorcet, Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS)-Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS)-SFR CAP Santé (Champagne-Ardenne Picardie Santé), Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Université de Reims Champagne-Ardenne (URCA)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Centre National de la Recherche Scientifique (CNRS)-Université de Reims Champagne-Ardenne (URCA)-SFR CAP Santé (Champagne-Ardenne Picardie Santé), Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-SFR Condorcet, and Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS)-Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS)
Subjects: Reaction conditions, Reaction mechanism, 010405 organic chemistry, Chemistry, [CHIM.ORGA]Chemical Sciences/Organic chemistry, Photoredox catalysis, Structural diversity, Context (language use), General Chemistry, 010402 general chemistry, Photochemistry, 01 natural sciences, Radical cyclization, 0104 chemical sciences, Catalysis, Reagent
Abstract: International audience; Photochemical reactions are a key method to generate radical intermediates. Often under these conditions no toxic reagents are necessary. During recent years, photo-redox catalytic reactions considerably push this research domain. These reaction conditions are particularly mild and safe which enables the transformation of poly-functional substrates into complex products. The synthesis of heterocyclic compounds is particularly important since they play an important role in the research of biologically active products. In this review, photochemical radical cyclization reactions of imines and related compounds such as oximes, hydrazones and chloroimines are presented. Reaction mechanisms are discussed and the structural diversity and complexity of the products are presented. Radical intermediates are mainly generated in two ways: (1) Electronic excitation is achieved by light absorption of the substrates. (2) The application of photoredox catalysis is now systematical studied for these reactions. Recently, also excitation of charge transfer complexes have been studied in this context with many perspectives.
Published: 2021
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14. Synthesis and crystal structure of a zinc(II) coordination polymer: N-(2-pyridylmethyl)- L-alanine)isothiocyanate Zn(II)

Author: James Raftery, P. O’brien, Aminou Mohamadou, Evans N. Mainsah, Peter T. Ndifon, Sally-Judith E. Ntum, Institut de Chimie Moléculaire de Reims - UMR 7312 (ICMR), Centre National de la Recherche Scientifique (CNRS)-Université de Reims Champagne-Ardenne (URCA)-SFR CAP Santé (Champagne-Ardenne Picardie Santé), Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-SFR Condorcet, Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS)-Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS), SFR Condorcet, Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS)-Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS)-SFR CAP Santé (Champagne-Ardenne Picardie Santé), and Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Université de Reims Champagne-Ardenne (URCA)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)
Subjects: Ligand, Coordination polymer, Infrared spectroscopy, chemistry.chemical_element, General Chemistry, Crystal structure, Zinc, 010402 general chemistry, 01 natural sciences, Zinc sulfide, 0104 chemical sciences, Crystallography, chemistry.chemical_compound, chemistry, [CHIM]Chemical Sciences, Orthorhombic crystal system, [CHIM.COOR]Chemical Sciences/Coordination chemistry, Single crystal, ComputingMilieux_MISCELLANEOUS
Abstract: The title compound, N-(2-pyridylmethyl)-L-alanine) zinc(II), [Zn(C10H11N3O2S)], a coordination polymer derived from the mixed ligands, N-(2-pyridylmethyl)-L-alanine (HL1) and ammonium thiocyanide (L2) has been synthesized and characterized by IR spectroscopy, 1H-NMR, elemental analysis, thermogravimetric analysis and single crystal x-ray structure determination.The single crystal X-ray structure analysis of the title compoundreveals a molecular polymeric compound that crystallizes in the orthorhombic crystal system and P2(1)2(1)2(1) space group. The ligand acts as a bridge between adjacent zinc(II) centres, each of which adopts a five-coordinate geometry. Zinc bonds to two N atoms and one O atom of HL1, one N atom of L2 and one O atom of another HL1 ligand. This is confirmed by IR spectroscopy. Thermogravimetric analysis shows a one-step decomposition of the complex to leave a zinc sulfide residue. KEY WORDS: Zinc(II), N-(2-pyridylmethyl)-(L)-alanine) ligand, Isothiocyanate, Coordination polymer, Single crystal structure Bull. Chem. Soc. Ethiop. 2020, 34(2), 285-293 DOI: https://dx.doi.org/10.4314/bcse.v34i2.7
Published: 2020
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15. Dereplication of Natural Extracts Diluted in Glycerin: Physical Suppression of Glycerin by Centrifugal Partition Chromatography Combined with Presaturation of Solvent Signals in 13C-Nuclear Magnetic Resonance Spectroscopy

Author: Richard Roe, Stéphane Poigny, Jane Hubert, Yves Brunel, Jean-Hugues Renault, Jean-Marc Nuzillard, Marine Canton, Institut de Chimie Moléculaire de Reims - UMR 7312 (ICMR), Centre National de la Recherche Scientifique (CNRS)-Université de Reims Champagne-Ardenne (URCA)-SFR CAP Santé (Champagne-Ardenne Picardie Santé), Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-SFR Condorcet, Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS)-Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS), NatExplore, Laboratoire de Pharmacochimie Pierre Fabre Dermo-Cosmétique, Centre de Recherche Pierre Fabre, SFR Condorcet, Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS)-Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS)-SFR CAP Santé (Champagne-Ardenne Picardie Santé), Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Université de Reims Champagne-Ardenne (URCA)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Centre de Recherche Pierre Fabre (Centre de R&D Pierre Fabre), and PIERRE FABRE-PIERRE FABRE
Subjects: Glycerol, glycerin, Magnetic Resonance Spectroscopy, cosmetic industry, Centrifugal partition chromatography, Pharmaceutical Science, Fractionation, Chemical Fractionation, Complex Mixtures, 01 natural sciences, Article, Analytical Chemistry, lcsh:QD241-441, centrifugal partition chromatography, natural extract, lcsh:Organic chemistry, [CHIM.ANAL]Chemical Sciences/Analytical chemistry, Tandem Mass Spectrometry, Drug Discovery, Physical and Theoretical Chemistry, Solvent system, Biological Products, Chromatography, 010405 organic chemistry, Chemistry, Plant Extracts, Organic Chemistry, 13C nuclear magnetic resonance, Nuclear magnetic resonance spectroscopy, chemical profiling, 0104 chemical sciences, Dilution, Solvent, 010404 medicinal & biomolecular chemistry, Chemistry (miscellaneous), Solvents, Molecular Medicine, Sugars, [CHIM.CHEM]Chemical Sciences/Cheminformatics, Chromatography, Liquid
Abstract: For scientific, regulatory, and safety reasons, the chemical profile knowledge of natural extracts incorporated in commercial cosmetic formulations is of primary importance. Many extracts are produced or stabilized in glycerin, a practice which hampers their characterization. This article proposes a new methodology for the quick identification of metabolites present in natural extracts when diluted in glycerin. As an extension of a 13C nuclear magnetic resonance (NMR) based dereplication process, two complementary approaches are presented for the chemical profiling of natural extracts diluted in glycerin: A physical suppression by centrifugal partition chromatography (CPC) with the appropriate biphasic solvent system EtOAc/CH3CN/water 3:3:4 (v/v/v) for the crude extract fractionation, and a spectroscopic suppression by presaturation of 13C-NMR signals of glycerin applied to glycerin containing fractions. This innovative workflow was applied to a model mixture containing 23 natural metabolites. Dereplication by 13C-NMR was applied either on the dry model mixture or after dilution at 5% in glycerin, for comparison, resulting in the detection of 20 out of 23 compounds in the two model mixtures. Subsequently, a natural extract of Cedrus atlantica diluted in glycerin was characterized and resulted in the identification of 12 metabolites. The first annotations by 13C-NMR were confirmed by two-dimensional NMR and completed by LC-MS analyses for the annotation of five additional minor compounds. These results demonstrate that the application of physical suppression by CPC and presaturation of 13C-NMR solvent signals highly facilitates the quick chemical profiling of natural extracts diluted in glycerin.
Published: 2020
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16. Anti-Cancer Activity of Curcumin on Multiple Myeloma

Author: Faezeh Ghasemi, Mohammad Hossein Pourhanifeh, Hossein Bagheri, Philippe Jeandet, Yvan Vander Heyden, Hamed Mirzaei, Haroon Khan, Erfan Mortezapour, Amirhossein Sahebkar, Ali Nikdasti, Jaber M. Khoi, Résistance Induite et Bioprotection des Plantes - EA 4707 (RIBP), Université de Reims Champagne-Ardenne (URCA)-SFR Condorcet, Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS)-Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS), SFR Condorcet, Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS), Department of Analytical Chemistry, Applied Chemometrics and Molecular Modelling, and Pharmaceutical and Pharmacological Sciences
Subjects: CRAB features, Curcumin, HRQoL, multidrug resistance, multiple myeloma, therapy, Cancer Research, Cell cycle checkpoint, Cell Survival, [SDV]Life Sciences [q-bio], 03 medical and health sciences, chemistry.chemical_compound, Curcuma, 0302 clinical medicine, medicine, Humans, Multiple myeloma, Cell Proliferation, 030304 developmental biology, Pharmacology, 0303 health sciences, Molecular Structure, business.industry, Cell Cycle, Cancer, medicine.disease, Antineoplastic Agents, Phytogenic, 3. Good health, medicine.anatomical_structure, chemistry, Apoptosis, 030220 oncology & carcinogenesis, Monoclonal, Cancer research, Molecular Medicine, Bone marrow, Drug Screening Assays, Antitumor, Signal transduction, Multiple Myeloma, business
Abstract: Multiple Myeloma (MM) is the third most common and deadly hematological malignancy, which is characterized by a progressive monoclonal proliferation within the bone marrow. MM is cytogenetically heterogeneous with numerous genetic and epigenetic alterations, which lead to a wide spectrum of signaling pathways and cell cycle checkpoint aberrations. MM symptoms can be attributed to CRAB features (hyperCalcemia, Renal failure, Anemia, and Bone lesion), which profoundly affect both the Health-Related Quality of Life (HRQoL) and the life expectancy of patients. Despite all enhancement and improvement in therapeutic strategies, MM is almost incurable, and patients suffering from this disease eventually relapse. Curcumin is an active and non-toxic phenolic compound, isolated from the rhizome of Curcuma longa L. It has been widely studied and has a confirmed broad range of therapeutic properties, especially anti-cancer activity, and others, including anti-proliferation, anti-angiogenesis, antioxidant and anti-mutation activities. Curcumin induces apoptosis in cancerous cells and prevents Multidrug Resistance (MDR). Growing evidence concerning the therapeutic properties of curcumin caused a pharmacological impact on MM. It is confirmed that curcumin interferes with various signaling pathways and cell cycle checkpoints, and with oncogenes. In this paper, we summarized the anti- MM effects of curcumin.
Published: 2020
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17. Revisiting the Amyloid Cascade Hypothesis: From Anti-Aβ Therapeutics to Auspicious New Ways for Alzheimer’s Disease

Author: Sohanur Rahman, Mohamed M. Abdel-Daim, Ghulam Md Ashraf, Hesham R. El-Seedi, May Bin-Jumah, Tanvir Kabir, Philippe Jeandet, Tapan Behl, Agnieszka Najda, Sahab Uddin, Résistance Induite et Bioprotection des Plantes - EA 4707 (RIBP), Université de Reims Champagne-Ardenne (URCA)-SFR Condorcet, Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS)-Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS), SFR Condorcet, and Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS)
Subjects: Neurology, Neurologi, [SDV]Life Sciences [q-bio], Peptide, Disease, Review, amyloid precursor protein, Pharmacology, lcsh:Chemistry, 0302 clinical medicine, Amyloid precursor protein, tau, lcsh:QH301-705.5, Spectroscopy, Aβ, chemistry.chemical_classification, 0303 health sciences, biology, Biochemistry and Molecular Biology, aducanumab, General Medicine, Alzheimer's disease, 3. Good health, Computer Science Applications, BAN2401, Aducanumab, Amyloid cascade, Alzheimer’s disease, medicine.medical_specialty, Amyloid, medicine.drug_class, tau Proteins, A beta, Monoclonal antibody, Fibril, Models, Biological, Catalysis, Inorganic Chemistry, 03 medical and health sciences, Alzheimer Disease, medicine, Animals, Humans, Physical and Theoretical Chemistry, Molecular Biology, 030304 developmental biology, Amyloid beta-Peptides, business.industry, Organic Chemistry, chemistry, lcsh:Biology (General), lcsh:QD1-999, biology.protein, business, 030217 neurology & neurosurgery, Biokemi och molekylärbiologi, Biomarkers
Abstract: International audience; Alzheimer’s disease (AD) is the most prevalent neurodegenerative disorder related to age, characterized by the cerebral deposition of fibrils, which are made from the amyloid-β (Aβ), a peptide of 40–42 amino acids. The conversion of Aβ into neurotoxic oligomeric, fibrillar, and protofibrillar assemblies is supposed to be the main pathological event in AD. After Aβ accumulation, the clinical symptoms fall out predominantly due to the deficient brain clearance of the peptide. For several years, researchers have attempted to decline the Aβ monomer, oligomer, and aggregate levels, as well as plaques, employing agents that facilitate the reduction of Aβ and antagonize Aβ aggregation, or raise Aβ clearance from brain. Unluckily, broad clinical trials with mild to moderate AD participants have shown that these approaches were unsuccessful. Several clinical trials are running involving patients whose disease is at an early stage, but the preliminary outcomes are not clinically impressive. Many studies have been conducted against oligomers of Aβ which are the utmost neurotoxic molecular species. Trials with monoclonal antibodies directed against Aβ oligomers have exhibited exciting findings. Nevertheless, Aβ oligomers maintain equivalent states in both monomeric and aggregation forms; so, previously administered drugs that precisely decrease Aβ monomer or Aβ plaques ought to have displayed valuable clinical benefits. In this article, Aβ-based therapeutic strategies are discussed and several promising new ways to fight against AD are appraised.
Published: 2020
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18. Mixture Analysis in Viscous Solvents by NMR Spin Diffusion Spectroscopy: ViscY. Application to High- and Low-Polarity Organic Compounds Dissolved in Sulfolane/Water and Sulfolane/DMSO-d 6 Blends

Author: François Pedinielli, Jean-Marc Nuzillard, Pedro Lameiras, Institut de Chimie Moléculaire de Reims - UMR 7312 (ICMR), Centre National de la Recherche Scientifique (CNRS)-Université de Reims Champagne-Ardenne (URCA)-SFR CAP Santé (Champagne-Ardenne Picardie Santé), Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-SFR Condorcet, Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS)-Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS), SFR Condorcet, Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS)-Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS)-SFR CAP Santé (Champagne-Ardenne Picardie Santé), and Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Université de Reims Champagne-Ardenne (URCA)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)
Subjects: Chemistry, 010401 analytical chemistry, Nuclear magnetic resonance spectroscopy, 010402 general chemistry, 01 natural sciences, 0104 chemical sciences, Analytical Chemistry, Solvent, chemistry.chemical_compound, Heteronuclear molecule, [CHIM.ANAL]Chemical Sciences/Analytical chemistry, Spin diffusion, Physical chemistry, Molecule, Magnetization transfer, Sulfolane, Two-dimensional nuclear magnetic resonance spectroscopy
Abstract: International audience; The sulfolane/water and sulfolane/DMSO-d6 binary NMR solvents are reported for the first time for the individual-ization of mixture components by spin diffusion, when molecular tumbling is slow due to solvent viscosity, thus strongly favouring magnetization transfer by dipolar cross relaxation. All 1 H nuclei resonances within the same molecule tend to correlate in a 2D NOESY spectrum, opening the way to mixture analysis. Till now, analysis of organic compounds by NMR spin diffusion in viscous solvents involved 1 H, 13 C, 15 N and 19 F.We offer a new way to analyse mixtures by considering 31 P nuclei as chemical shift markers. We report the individualization of four polar dipeptides and of four non-polar phosphorus-containing compounds respectively dissolved in sulfolane/water and sulfolane/DMSO-d6 solvents blends by means of homonuclear selective 1D and 2D 1 H experiments and a heteronuclear 2D 1 H-31 P HSQC-NOESY experiment by taking advantage from spin diffusion. The name ViscY is proposed to refer to the class of all NMR spectroscopy experiments that rely on viscous solvents for mixture analysis.
Published: 2020
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19. Investigation of the glucosinolates in Hesperis matronalis L. and Hesperis laciniata All.: Unveiling 4′-O-β-d-apiofuranosylglucomatronalin

Author: Jean-Marc Nuzillard, Patrick Rollin, Marin Roje, Dominique Harakat, Sharayah Read, Ivica Blažević, Sabine Montaut, Laurentian University, University of Split, Institut de Chimie Moléculaire de Reims - UMR 7312 (ICMR), Université de Reims Champagne-Ardenne (URCA)-Institut de Chimie du CNRS (INC)-SFR CAP Santé (Champagne-Ardenne Picardie Santé), Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS)-SFR Condorcet, Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS)-Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS), Rudjer Boskovic Institute [Zagreb], Institut de Chimie Organique et Analytique (ICOA), Université d'Orléans (UO)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Nuzillard, Jean-Marc, SFR Condorcet, Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS)-Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS)-SFR CAP Santé (Champagne-Ardenne Picardie Santé), Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Université de Reims Champagne-Ardenne (URCA)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), and Centre National de la Recherche Scientifique (CNRS)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Université d'Orléans (UO)-Institut de Chimie du CNRS (INC)
Subjects: Canada, [CHIM.ANAL] Chemical Sciences/Analytical chemistry, Croatia, Glucosinolates, Hesperis matronalis, 010402 general chemistry, Plant Roots, 01 natural sciences, Biochemistry, Mass Spectrometry, Analytical Chemistry, chemistry.chemical_compound, [CHIM.ANAL]Chemical Sciences/Analytical chemistry, Botany, ComputingMilieux_MISCELLANEOUS, Molecular Structure, biology, Plant Extracts, 010405 organic chemistry, Chemistry, [CHIM.ORGA]Chemical Sciences/Organic chemistry, Organic Chemistry, Data interpretation, Brassicaceae, General Medicine, Hesperis laciniata All, Hesperis matronalis L, Glucosinolate, NMR, LC-MS, 4′-O-β-D-apiofuranosylglucomatronalin, biology.organism_classification, [CHIM.ORGA] Chemical Sciences/Organic chemistry, Hesperis laciniata, 0104 chemical sciences, Hesperis, Plant Leaves, Seeds, Chromatography, Liquid
Abstract: The glucosinolate (GSL) profiles of wild-growing plants from the genus Hesperis, i.e. Hesperis laciniata All. (leaf, stem, flower, and root) from Croatia and Hesperis matronalis L. (leaf, stem, flower, seed, and root) from Canada, were established by LC-MS. During this investigation, 5-(methylsulfanyl)pentyl- (3), 6-(methylsulfanyl)hexyl- (4), 6-(methylsulfinyl)hexyl- (6), and 4′-α- l -rhamnopyranosyloxybenzyl- (17) GSLs were identified. In addition, the presence of 7-(methylsulfinyl)heptyl GSL (18), hydroxy-(α- l -rhamnopyranosyloxy)benzyl GSL, and of one d -apiosylated analogue of 17 were suggested. Moreover, one new GSL, 4′-O-β- d -apiofuranosylglucomatronalin (19) was isolated from H. laciniata (flower, steam and leaf) and characterized by spectroscopic data interpretation. Finally, we report the presence of 3, 4, 6, 19, glucosinalbin (12), and 4-hydroxyglucobrassicin (20) in H. matronalis and hypothesize the presence of glucomatronalin (13) and 3-hydroxy-6-(methylsulfanyl)hexyl GSL (21).
Published: 2020
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20. Inorganic Mercury and Methyl-Mercury Uptake and Effects in the Aquatic Plant Elodea nuttallii: A Review of Multi-Omic Data in the Field and in Controlled Conditions

Author: Claudia Cosio, Stress Environnementaux et BIOsurveillance des milieux aquatiques (SEBIO), Institut National de l'Environnement Industriel et des Risques (INERIS)-Université de Reims Champagne-Ardenne (URCA)-Université Le Havre Normandie (ULH), Normandie Université (NU)-Normandie Université (NU)-SFR Condorcet, Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS)-Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS), Université Le Havre Normandie (ULH), Normandie Université (NU)-Normandie Université (NU)-Université de Reims Champagne-Ardenne (URCA)-SFR Condorcet, and Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS)-Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS)-Institut National de l'Environnement Industriel et des Risques (INERIS)
Subjects: chemistry.chemical_element, Elodea nuttallii, 010501 environmental sciences, 01 natural sciences, lcsh:Technology, lcsh:Chemistry, 03 medical and health sciences, Bioremediation, Aquatic plant, Biomonitoring, General Materials Science, Instrumentation, lcsh:QH301-705.5, 030304 developmental biology, 0105 earth and related environmental sciences, Fluid Flow and Transfer Processes, 0303 health sciences, macrophyte, biology, lcsh:T, Process Chemistry and Technology, General Engineering, 15. Life on land, biology.organism_classification, lcsh:QC1-999, Computer Science Applications, Mercury (element), Macrophyte, bioaccumulation, chemistry, lcsh:Biology (General), lcsh:QD1-999, 13. Climate action, lcsh:TA1-2040, Bioaccumulation, Environmental chemistry, Toxicity, biomonitoring, [SDE]Environmental Sciences, biomarker, [SDV.TOX.ECO]Life Sciences [q-bio]/Toxicology/Ecotoxicology, lcsh:Engineering (General). Civil engineering (General), lcsh:Physics
Abstract: (1) Background: Mercury is a threat for the aquatic environment. Nonetheless, the entrance of Hg into food webs is not fully understood. Macrophytes are both central for Hg entry in food webs and are seen as good candidates for biomonitoring and bioremediation; (2) Methods: We review the knowledge gained on the uptake and effects of inorganic Hg (IHg) and methyl-Hg (MMHg) in the macrophyte Elodea nuttallii found in temperate freshwaters; (3) Results: E. nuttallii bioaccumulates IHg and MMHg, but IHg shows a higher affinity to cell walls. At the individual level, IHg reduced chlorophyll, while MMHg increased anthocyanin. Transcriptomics and metabolomics in shoots revealed that MMHg regulated a higher number of genes than IHg. Proteomics and metabolomics in cytosol revealed that IHg had more effect than MMHg; (4) Conclusions: MMHg and IHg show different cellular toxicity pathways. MMHg’s main impact appears on the non-soluble compartment, while IHg’s main impact happens on the soluble compartment. This is congruent with the higher affinity of IHg with dissolved OM (DOM) or cell walls. E. nuttallii is promising for biomonitoring, as its uptake and molecular responses reflect exposure to IHg and MMHg. More generally, multi-omics approaches identify cellular toxicity pathways and the early impact of sublethal pollution.
Published: 2020
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21. Novel Anti-Alzheimer’s Therapeutic Molecules Targeting Amyloid Precursor Protein Processing

Author: Mohamed M. Abdel-Daim, Philippe Jeandet, Asma Perveen, Shaker A. Mousa, Ghulam Md Ashraf, Md. Sahab Uddin, Md. Tanvir Kabir, May Bin-Jumah, Bijo Mathew, Résistance Induite et Bioprotection des Plantes - EA 4707 (RIBP), Université de Reims Champagne-Ardenne (URCA)-SFR Condorcet, Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS)-Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS), SFR Condorcet, and Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS)
Subjects: Drug, Aging, Proteases, Amyloid beta, media_common.quotation_subject, [SDV]Life Sciences [q-bio], Review Article, Biochemistry, 03 medical and health sciences, Amyloid beta-Protein Precursor, 0302 clinical medicine, Alzheimer Disease, Amyloid precursor protein, Medicine, Dementia, Animals, Humans, Senile plaques, Molecular Targeted Therapy, Phosphorylation, Drug Approval, 030304 developmental biology, media_common, chemistry.chemical_classification, 0303 health sciences, biology, QH573-671, business.industry, Cell Biology, General Medicine, medicine.disease, 3. Good health, Enzyme, chemistry, biology.protein, business, Cytology, Neuroscience, Protein Processing, Post-Translational, 030217 neurology & neurosurgery
Abstract: Alzheimer’s disease (AD) is the most common cause of dementia among older people, and the prevalence of this disease is estimated to rise quickly in the upcoming years. Unfortunately, almost all of the drug candidates tested for AD until now have failed to exhibit any efficacy. Henceforth, there is an increased necessity to avert and/or slow down the advancement of AD. It is known that one of the major pathological characteristics of AD is the presence of senile plaques (SPs) in the brain. These SPs are composed of aggregated amyloid beta (Aβ), derived from the amyloid precursor protein (APP). Pharmaceutical companies have conducted a number of studies in order to identify safe and effective anti-Aβdrugs to combat AD. It is known thatα-,β-, andγ-secretases are the three proteases that are involved in APP processing. Furthermore, there is a growing interest in these proteases, as they have a contribution to the modulation and production of Aβ. It has been observed that small compounds can be used to target these important proteases. Indeed, these compounds must satisfy the common strict requirements of a drug candidate targeted for brain penetration and selectivity toward different proteases. In this article, we have focused on the auspicious molecules which are under development for targeting APP-processing enzymes. We have also presented several anti-AD molecules targeting Aβaccumulation and phosphorylation signaling in APP processing. This review highlights the structure-activity relationship and other physicochemical features of several pharmacological candidates in order to successfully develop new anti-AD drugs.
Published: 2020
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22. Ni(II) N-(2-Pyridylmethyl)-L-Alanine) Complex: Structural Diversity and Photoluminiscent Studies

Author: Jérôme Marrot, Bridget N. Ndosiri, Justin Nenwa, Aminou Mohamadou, Emmanuel N. Nfor, Institut de Chimie Moléculaire de Reims - UMR 7312 (ICMR), SFR Condorcet, Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS)-Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS)-SFR CAP Santé (Champagne-Ardenne Picardie Santé), Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Université de Reims Champagne-Ardenne (URCA)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Centre National de la Recherche Scientifique (CNRS)-Université de Reims Champagne-Ardenne (URCA)-SFR CAP Santé (Champagne-Ardenne Picardie Santé), Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-SFR Condorcet, and Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS)-Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS)
Subjects: Photoluminescence, 010405 organic chemistry, Chemistry, Materials Science (miscellaneous), chemistry.chemical_element, 010402 general chemistry, 01 natural sciences, Industrial and Manufacturing Engineering, 0104 chemical sciences, Nickel, Crystallography, Octahedral molecular geometry, X-ray crystallography, Molecule, [CHIM]Chemical Sciences, Orthorhombic crystal system, [CHIM.COOR]Chemical Sciences/Coordination chemistry, Business and International Management, Luminescence, Single crystal, ComputingMilieux_MISCELLANEOUS
Abstract: A novel chiral Nickel (II) complex of N-(2-pyridylmethyl)-L-alanine (Hpyala) 1 has been prepared and structurally characterized by elemental analysis, FT-IR, UV-visible, TGA and single crystal X-ray diffraction techniques. Complex 1 crystallizes in an orthorhombic P212121 space group. The nickel (II) centre in the complex adopts a distorted octahedral geometry. This compound has been seen to exhibit structural diversity resulting from the number of lattice water molecules. The photoluminescent properties of this compound which have also been investigated, indicates the potential application in luminescence.
Published: 2020
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23. A New Way for Probing Bond Strength

Author: Eric Hénon, Jean-Philip Piquemal, Jean-Charles Boisson, Hassan Khartabil, Julia Contreras-García, Johanna Klein, Institut de Chimie Moléculaire de Reims - UMR 7312 (ICMR), SFR Condorcet, Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS)-Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS)-SFR CAP Santé (Champagne-Ardenne Picardie Santé), Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Université de Reims Champagne-Ardenne (URCA)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Centre de Recherche en Sciences et Technologies de l'Information et de la Communication - EA 3804 (CRESTIC), Université de Reims Champagne-Ardenne (URCA), Laboratoire de chimie théorique (LCT), Institut de Chimie du CNRS (INC)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Institut Universitaire de France (IUF), Ministère de l'Education nationale, de l’Enseignement supérieur et de la Recherche (M.E.N.E.S.R.), European Project: 810367,EMC2(2019), Université de Reims Champagne-Ardenne (URCA)-Institut de Chimie du CNRS (INC)-SFR CAP Santé (Champagne-Ardenne Picardie Santé), Université de Reims Champagne-Ardenne (URCA)-Université de Reims Champagne-Ardenne (URCA)-Centre National de la Recherche Scientifique (CNRS)-SFR Condorcet, and Université de Reims Champagne-Ardenne (URCA)-Centre National de la Recherche Scientifique (CNRS)-Université de Reims Champagne-Ardenne (URCA)-Centre National de la Recherche Scientifique (CNRS)
Subjects: Electron density, 010304 chemical physics, Chemistry, Bond strength, Electron, 010402 general chemistry, 01 natural sciences, Bond order, Electron localization function, 0104 chemical sciences, [CHIM.THEO]Chemical Sciences/Theoretical and/or physical chemistry, Delocalized electron, Chemical bond, Chemical physics, Covalent bond, 0103 physical sciences, Physical and Theoretical Chemistry
Abstract: International audience; The covalent chemical bond is intimately linked to electron sharing between atoms. The recent independent gradient model (IGM) and its δg descriptor provide a way to quantify locally this electron density interpenetration from wavefunction calculations. Each bond has its own IGM-δgpair signature. The present work establishes for the first time a strong link between this bond signature and the physically grounded bond force constant concept. Analyzing a large set of compounds and bonds, the intrinsic bond strength index (IBSI) emerges from the IGM formulation. Our study shows that the IBSI does not belong to the class of conventional bond orders (like Mulliken, Wiberg, Mayer, delocalization index, or electron localization function—ELF), but is rather a new complementary index, related to the bond strength. A fundamental outcome of this research is a novel index allowing to range all two-center chemical bonds by their intrinsic strength in molecular situation. We believe that the IBSI is a powerful and robust tool for interpretation accessible to a wide community of chemists (organic, inorganic chemistry, including transition-metal complexes and reaction mechanisms).
Published: 2020
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24. Combining sorption experiments and Time of Flight Secondary Ion Mass Spectrometry (ToF-SIMS) to study the adsorption of propranolol onto environmental solid matrices – Influence of copper(II)

Author: Nicolas Nuns, Emmanuel Guillon, Stéphanie Sayen, Rose-Michelle Smith, Elise Berrier, Institut de Chimie Moléculaire de Reims - UMR 7312 (ICMR), SFR Condorcet, Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS)-Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS)-SFR CAP Santé (Champagne-Ardenne Picardie Santé), Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Université de Reims Champagne-Ardenne (URCA)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Institut des Molécules et de la Matière Condensée de Lille (IMMCL), Centrale Lille Institut (CLIL)-Centre National de la Recherche Scientifique (CNRS)-Université de Lille, Sciences et Technologies, Unité de Catalyse et Chimie du Solide - UMR 8181 (UCCS), Centrale Lille Institut (CLIL)-Université d'Artois (UA)-Centrale Lille-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC)-Université de Lille, Université de Reims Champagne-Ardenne (URCA)-Institut de Chimie du CNRS (INC)-SFR CAP Santé (Champagne-Ardenne Picardie Santé), Université de Reims Champagne-Ardenne (URCA)-Université de Reims Champagne-Ardenne (URCA)-Centre National de la Recherche Scientifique (CNRS)-SFR Condorcet, Université de Reims Champagne-Ardenne (URCA)-Centre National de la Recherche Scientifique (CNRS)-Université de Reims Champagne-Ardenne (URCA)-Centre National de la Recherche Scientifique (CNRS), Université de Lille, Sciences et Technologies-Centrale Lille-Centre National de la Recherche Scientifique (CNRS), and Université d'Artois (UA)-Centrale Lille-Institut de Chimie du CNRS (INC)-Université de Lille-Centre National de la Recherche Scientifique (CNRS)
Subjects: Environmental Engineering, Inorganic chemistry, 0211 other engineering and technologies, Spectrometry, Mass, Secondary Ion, chemistry.chemical_element, 02 engineering and technology, 010501 environmental sciences, 01 natural sciences, Metal, Soil, Adsorption, Soil Pollutants, Environmental Chemistry, Kaolinite, Organic matter, Waste Management and Disposal, 0105 earth and related environmental sciences, chemistry.chemical_classification, 021110 strategic, defence & security studies, Chemistry, Sorption, [CHIM.CATA]Chemical Sciences/Catalysis, Hydrogen-Ion Concentration, Propranolol, Pollution, Copper, Secondary ion mass spectrometry, Models, Chemical, visual_art, Soil water, visual_art.visual_art_medium
Abstract: International audience; The bioavailability of pharmaceuticals is governed by their sorption in soils/sediments, as the retention processes determine their concentration in surface- and ground-water. The adsorption of these contaminants can involve various solid components such as organic matter, clays and metallic oxides, and their distribution among these solid components depends on contaminant and solid properties. In this paper we studied the adsorption of the pharmaceutical propranolol – a beta-blocker – on eight different solids (six soils, one sediment and one kaolinite-based sample) by batch experiments. The influence of contact time, propranolol concentration and pH was considered, as well as the presence of copper(II). The investigated solids displayed a wide variability in terms of CEC (cationic exchange capacity) and organic carbon and carbonates contents. The influence of pH was negligible in the pH range from 5.5 to 8.6. The adsorbed amounts were greatly dependent on the solid and two groups of solids were evidenced: three soils of high CEC and organic carbon contents which retained high amounts of propranolol, and three soils, the sediment and the kaolinite-based sample (low CEC and organic carbon content) displaying a low adsorption capacity for the beta-blocker. A linear model enabling the determination of the sorption parameters Kd and Koc was pertinent to describe the adsorption isotherms but the Koc values showed a great variability. It was shown that organic carbon content alone could not explain propranolol adsorption. The CEC value was identified as influent parameter and a simple empirical model was proposed to describe propranolol adsorption. At microscopic and molecular scales, ToF-SIMS experiments indicated (i) a decrease of potassium on the surface upon propranolol adsorption with a distribution of the beta-blocker similarly to alumino-silicates, iron and organic carbon on the surface confirming a cation exchange mechanism and (ii) the absence of degradation products and copper-propranolol complexes.
Published: 2018
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25. Mutations of Histidine 13 to Arginine and Arginine 5 to Glycine Are Responsible for Different Coordination Sites of Zinc(II) to Human and Murine Peptides

Author: Peter Faller, Sabrina Noël, Denis Testemale, Valentina Borghesani, Emmanuel Guillon, Bruno Alies, Christelle Hureau, Stéphanie Sayen, ChemBioPharm, Université de Bordeaux (UB)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de chimie de coordination (LCC), Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Institut de Chimie de Toulouse (ICT-FR 2599), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Institut de Chimie Moléculaire de Reims - UMR 7312 (ICMR), SFR Condorcet, Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS)-Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS)-SFR CAP Santé (Champagne-Ardenne Picardie Santé), Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Université de Reims Champagne-Ardenne (URCA)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Matériaux, Rayonnements, Structure (MRS), Institut Néel (NEEL), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes [2016-2019] (UGA [2016-2019])-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes [2016-2019] (UGA [2016-2019]), European Synchrotron Radiation Facility (ESRF), Institut de Chimie de Strasbourg, Université de Strasbourg (UNISTRA)-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC), European Project: 638712,H2020,ERC-2014-STG,aLzINK(2015), Institut de Chimie de Toulouse (ICT), Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université de Toulouse (UT)-Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Centre National de la Recherche Scientifique (CNRS), Université de Reims Champagne-Ardenne (URCA)-Institut de Chimie du CNRS (INC)-SFR CAP Santé (Champagne-Ardenne Picardie Santé), Université de Reims Champagne-Ardenne (URCA)-Université de Reims Champagne-Ardenne (URCA)-Centre National de la Recherche Scientifique (CNRS)-SFR Condorcet, Université de Reims Champagne-Ardenne (URCA)-Centre National de la Recherche Scientifique (CNRS)-Université de Reims Champagne-Ardenne (URCA)-Centre National de la Recherche Scientifique (CNRS), Matériaux, Rayonnements, Structure (NEEL - MRS), and Université de Strasbourg (UNISTRA)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)
Subjects: Arginine, Glycine, Mutagenesis (molecular biology technique), chemistry.chemical_element, Peptide, Zinc, 010402 general chemistry, 01 natural sciences, Catalysis, Mice, Alzheimer Disease, Coordination Complexes, [CHIM]Chemical Sciences, Animals, Humans, [CHIM.COOR]Chemical Sciences/Coordination chemistry, Histidine, Binding site, Nuclear Magnetic Resonance, Biomolecular, chemistry.chemical_classification, Amyloid beta-Peptides, Binding Sites, 010405 organic chemistry, Organic Chemistry, Bioinorganic chemistry, General Chemistry, Hydrogen-Ion Concentration, 0104 chemical sciences, X-Ray Absorption Spectroscopy, chemistry, Biochemistry, Mutagenesis, Site-Directed, Copper
Abstract: International audience; Because mice and rats do not naturally develop Alzheimer's disease, genetically modified animals are required to study this pathology. This striking difference in terms of disease onset could be due to three alterations in the murine sequence (R5G, Y10F and H13R) of the amyloid‐β peptide with respect to the human counterpart. Whether the metal‐ion binding properties of the murine peptide are at the origin of such different amyloidogenicity of the two peptides is still an open question. Herein, the main zinc binding site to the murine amyloid‐β at physiological pH has been determined through the combination of several spectroscopic and analytical methods applied to a series of six peptides with one or two of the key mutations. These results have been compared with the zinc binding site encountered in the human peptide. A coordination mechanism that demonstrates the importance of the H13R and R5G mutations in the different zinc environments present in the murine and human peptides is proposed. The nature of the minor zinc species present at physiological pH is also suggested for both peptides. Finally, the biological relevance and fallouts of the differences determined in zinc binding to human versus murine amyloid‐β are also discussed.
Published: 2018
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26. All electrochemical process for synthesis of Si coating on TiO2 nanotubes as durable negative electrode material for lithium ion batteries

Author: Michael Molinari, Claude Guery, Jeremy Mallet, Mathieu Morcrette, Jean Michel, Abirdu Woreka Nemaga, Laboratoire de Recherche en Nanosciences - EA 4682 (LRN), SFR Condorcet, Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS)-Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS)-Université de Reims Champagne-Ardenne (URCA)-SFR CAP Santé (Champagne-Ardenne Picardie Santé), Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV), Laboratoire réactivité et chimie des solides - UMR CNRS 7314 (LRCS), Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC), Réseau sur le stockage électrochimique de l'énergie (RS2E), Université de Picardie Jules Verne (UPJV)-Institut de Chimie du CNRS (INC)-Aix Marseille Université (AMU)-Université de Pau et des Pays de l'Adour (UPPA)-Université de Nantes (UN)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS)-Sorbonne Université (SU)-Ecole Nationale Supérieure de Chimie de Paris - Chimie ParisTech-PSL (ENSCP), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Collège de France (CdF (institution))-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP ), Université Grenoble Alpes (UGA)-Université Grenoble Alpes (UGA)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Ecole Nationale Supérieure de Chimie de Montpellier (ENSCM), Université de Reims Champagne-Ardenne (URCA)-SFR CAP Santé (Champagne-Ardenne Picardie Santé), Université de Reims Champagne-Ardenne (URCA)-Université de Reims Champagne-Ardenne (URCA)-SFR Condorcet, Université de Reims Champagne-Ardenne (URCA)-Centre National de la Recherche Scientifique (CNRS)-Université de Reims Champagne-Ardenne (URCA)-Centre National de la Recherche Scientifique (CNRS), Université de Picardie Jules Verne (UPJV)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Université de Nantes (UN)-Aix Marseille Université (AMU)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Collège de France (CdF (institution))-Université de Picardie Jules Verne (UPJV)-Ecole Nationale Supérieure de Chimie de Montpellier (ENSCM)-Ecole Nationale Supérieure de Chimie de Paris - Chimie ParisTech-PSL (ENSCP), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Pau et des Pays de l'Adour (UPPA)-Institut de Chimie du CNRS (INC)-Université de Montpellier (UM)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP ), Université Grenoble Alpes (UGA)-Université Grenoble Alpes (UGA), and French Environment and Energy Management Agency (ADEME)University of Reims Champagne Ardenne
Subjects: Amorphous silicon, Materials science, Energy Engineering and Power Technology, chemistry.chemical_element, 02 engineering and technology, engineering.material, 010402 general chemistry, 7. Clean energy, 01 natural sciences, [SPI]Engineering Sciences [physics], Crystallinity, chemistry.chemical_compound, Electrodeposition, Coating, Silicon anode, Electrical and Electronic Engineering, Physical and Theoretical Chemistry, Thin film, Renewable Energy, Sustainability and the Environment, Anodizing, Titania nanotubes, 021001 nanoscience & nanotechnology, Ionic liquids, 0104 chemical sciences, Amorphous solid, chemistry, Chemical engineering, Electrode, engineering, Lithium, 0210 nano-technology
Abstract: International audience; The development of high energy density Li-ion batteries requires to look for electrode materials with high capacity while keeping their stability upon cycling. In this study, amorphous silicon (a-Si) thin film deposited on self-organized TiO2 nanotubes is investigated as negative electrode for Li-ion batteries. Nanostructured composite negative electrodes were fabricated by a two-step cost effective electrochemical process. Firstly, self-organized TiO2 nanotube arrays were synthesised by anodizing of Ti foil. Subsequently, thanks to the use of room temperature ionic liquid, conformal Si layer was electrodeposited on the TiO2 nanotubes to achieve the synthesis of nanostructured a-Si/TiO2 nanotube composite negative electrodes. The influence of the Si loading as well as the crystallinity of the TiO2 nanotubes have been studied in terms of capacity and cyclic stability. For an optimized a-Si loading, it is shown that the amorphous state for the TiO2 nanotubes enables to get stable lithiation and delithiation with a total areal charge capacity of about 0.32 mA h cm−2 with improved capacity retention of about 84% after 50 cycles, while a-Si on crystalline TiO2 nanotubes shows poor cyclic stability independently from the Si loading.
Published: 2018
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27. Interfacial layer in high-performance CFRP composites cured out-of-autoclave: Influence of the carbon fiber surface and its graphite-like properties

Author: Christelle Kowandy, Arnaud Martin, Xavier Coqueret, Brigitte Defoort, Declarative & Reliable management of Uncertain, user-generated Interlinked Data (DRUID), GESTION DES DONNÉES ET DE LA CONNAISSANCE (IRISA-D7), Institut de Recherche en Informatique et Systèmes Aléatoires (IRISA), Institut National des Sciences Appliquées - Rennes (INSA Rennes), Institut National des Sciences Appliquées (INSA)-Université de Rennes (UNIV-RENNES)-Institut National des Sciences Appliquées (INSA)-Université de Rennes (UNIV-RENNES)-Université de Bretagne Sud (UBS)-Centre National de la Recherche Scientifique (CNRS)-École normale supérieure - Rennes (ENS Rennes)-Institut National de Recherche en Informatique et en Automatique (Inria)-Télécom Bretagne-Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-CentraleSupélec-Institut National des Sciences Appliquées - Rennes (INSA Rennes), Université de Rennes (UNIV-RENNES)-CentraleSupélec-Institut de Recherche en Informatique et Systèmes Aléatoires (IRISA), Université de Rennes (UNIV-RENNES)-CentraleSupélec, ArianeGroup, Institut de Chimie Moléculaire de Reims - UMR 7312 (ICMR), Centre National de la Recherche Scientifique (CNRS)-Université de Reims Champagne-Ardenne (URCA)-SFR CAP Santé (Champagne-Ardenne Picardie Santé), Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-SFR Condorcet, Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS)-Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS), SFR Condorcet, Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS)-Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS)-SFR CAP Santé (Champagne-Ardenne Picardie Santé), Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Université de Reims Champagne-Ardenne (URCA)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Université de Reims Champagne-Ardenne (URCA)-SFR CAP Santé (Champagne-Ardenne Picardie Santé), and Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS)-SFR Condorcet
Subjects: chemistry.chemical_classification, Acrylate, Materials science, Radical polymerization, [CHIM.MATE]Chemical Sciences/Material chemistry, 02 engineering and technology, Polymer, 010402 general chemistry, 021001 nanoscience & nanotechnology, 01 natural sciences, 0104 chemical sciences, chemistry.chemical_compound, [CHIM.POLY]Chemical Sciences/Polymers, chemistry, Polymerization, Mechanics of Materials, Ceramics and Composites, Molecule, Interphase, Graphite, Composite material, 0210 nano-technology, ComputingMilieux_MISCELLANEOUS, Curing (chemistry)
Abstract: This contribution addresses the challenging investigation of the chemical mechanisms occurring at the carbon fiber-matrix interface of carbon fiber-reinforced polymer (CFRP) composite materials cured out-of-autoclave. A high energy radiation curing method (electron-beam) was used to initiate free radical polymerization of acrylate-based matrices. Comparison with state-of-the-art thermally cured composites reveals the lower transverse mechanical properties of the radiation-cured CFRP composites. To improve the interfacial layer, several points related to the polymerization at the interphase have been investigated. Notably, the influence on the polymerization of acrylate matrices of the chemical functional groups present at the carbon fiber surface and its graphite-like properties are discussed using representative molecules. It is shown that these additives exhibit strong inhibiting effects, whereas thiol groups efficiently sensitize the initiation mechanisms and undergo transfer reactions. Moreover, it is discussed that graphite-like molecules affect the matrix polymerization and the mechanical properties of the composites. An adapted solution is proposed.
Published: 2018
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28. d-Xylose and l-arabinose laurate esters: Enzymatic synthesis, characterization and physico-chemical properties

Author: Murielle Muzard, Harivony Rakotoarivonina, Magali Deleu, Richard Plantier-Royon, Thomas Méline, Caroline Rémond, Fractionnement des AgroRessources et Environnement - UMR-A 614 (FARE), Université de Reims Champagne-Ardenne (URCA)-Institut National de la Recherche Agronomique (INRA)-SFR Condorcet, Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS)-Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS), Institut de Chimie Moléculaire de Reims - UMR 7312 (ICMR), SFR Condorcet, Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS)-Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS)-SFR CAP Santé (Champagne-Ardenne Picardie Santé), Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Université de Reims Champagne-Ardenne (URCA)-Centre National de la Recherche Scientifique (CNRS), Université de Liège, Fractionnement des AgroRessources et Environnement (FARE), Université de Reims Champagne-Ardenne (URCA)-Institut National de la Recherche Agronomique (INRA), Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Université de Reims Champagne-Ardenne (URCA)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Université de Reims Champagne-Ardenne (URCA), and Université de Liège - Gembloux
Subjects: Arabinose, Surfactants, [SDV]Life Sciences [q-bio], Pentose, Bioengineering, Xylose, 010402 general chemistry, 01 natural sciences, Applied Microbiology and Biotechnology, Biochemistry, Fungal Proteins, D-Xylose laurate esters, Surface-Active Agents, chemistry.chemical_compound, Drug Stability, Humans, Organic chemistry, Biomass, Lipase, chemistry.chemical_classification, Esterification, Molecular Structure, biology, 010405 organic chemistry, Chemistry, Esters, Green Chemistry Technology, Hydrogen-Ion Concentration, Enzymes, Immobilized, biology.organism_classification, Biorefinery, 0104 chemical sciences, L-Arabinose laurate esters, Enzyme, Biocatalysis, Yield (chemistry), biology.protein, Candida antarctica, Laurates, Biotechnology
Abstract: International audience; Efficient enzymatic synthesis of D-xylose and L-arabinose lauryl mono- and diesters has been achieved by transesterification reactions catalyzed by immobilized Candida antarctica lipase B as biocatalyst, in organic medium in the presence of D-xylose or L-arabinose and vinyl laurate at 50 °C. In case of L-arabinose, one monoester and one diester were obtained in a 57 % overall yield. A more complex mixture was produced for D-xylose as two monoesters and two diesters were synthesized in a 74.9 % global yield. The structures of all these pentose laurate esters was solved. Results demonstrated that the esterification first occurred regioselectively onto the primary hydroxyl groups. Pentose laurate esters exhibited interesting features such as low critical aggregation concentrations values all inferior to 25 µM. Our study demonstrates that the enzymatic production of L-arabinose and D-xylose-based esters represents an interesting approach for the production of green surfactants from lignocellulosic biomass-derived pentoses.
Published: 2018
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29. Bio-based and recycled-waste materials in buildings: A study of energy performance of hemp-lime concrete and recycled-polyethylene terephthalate façades for office facilities in France and Italy

Author: Chadi Maalouf, Carlo Ingrao, Francesco Asdrubali, Flavio Scrucca, Tala Moussa, Georges Costantine, SFR Condorcet, Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS), Groupe de Recherche en Sciences Pour l'Ingénieur - EA 4694 (GRESPI), Université de Reims Champagne-Ardenne (URCA)-SFR Condorcet, Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS)-Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS), Matériaux et Ingénierie Mécanique (MATIM), and Université de Reims Champagne-Ardenne (URCA)
Subjects: Fluid Flow and Transfer Processes, Environmental Engineering, Waste management, 020209 energy, Economic sector, Energy performance, Bio based, 02 engineering and technology, Building and Construction, engineering.material, Key issues, 7. Clean energy, 12. Responsible consumption, [SPI]Engineering Sciences [physics], chemistry.chemical_compound, chemistry, 13. Climate action, 11. Sustainability, 0202 electrical engineering, electronic engineering, information engineering, Polyethylene terephthalate, engineering, Environmental science, Lime, Efficient energy use
Abstract: International audience; Global environmental issues are arising over the developed and developing world. Improving energy efficiency and reducing Green Gases emissions become the key issues in all the economic sectors and, in particular, the building sector that is one of the most energy-consuming. It is, therefore, important to find alternative building materials with low-environmental impact contributing to global sustainability. In that context, this study reports on the performance of sustainable materials produced from natural resources as hemp-concrete or from recycled-waste nonbiodegradable materials including recycled polyethylene terephthalate. Three façades employing three different materials (hemp-concrete, hemp-concrete with brick and recycled polyethylene terephthalate) were investigated in three cities in France (Nancy and Carpentras) and Italy (Perugia) with different climate. The energy performance of each façade was assessed in terms of cooling and heating demands, electrical consumption for a constant flow rate ventilation mode, considering different orientations. The study also shows the effect of window size (10%, 25%, and 40%) on the annual energy consumption.
Published: 2018
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30. Enzymatic Synthesis of Resveratrol α-Glycosides from β-Cyclodextrin-Resveratrol Complex in Water

Author: Florent Allais, Eduardo Gazaneo Barboza, Jean-Hugues Renault, Thomas Marié, Audrey Gratia, Eric Courot, Jane Hubert, Andreia R. S. Teixeira, Gaëlle Willig, Alexis Kotland, Agro-Biotechnologies Industrielles (ABI), AgroParisTech, Institut de Chimie Moléculaire de Reims - UMR 7312 (ICMR), SFR Condorcet, Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS)-Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS)-SFR CAP Santé (Champagne-Ardenne Picardie Santé), Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Université de Reims Champagne-Ardenne (URCA)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Résistance Induite et Bioprotection des Plantes - EA 4707 (RIBP), Université de Reims Champagne-Ardenne (URCA)-SFR Condorcet, and Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS)-Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS)
Subjects: 0301 basic medicine, Antioxidant, Bioconversion, General Chemical Engineering, medicine.medical_treatment, Resveratrol, 01 natural sciences, 7. Clean energy, 03 medical and health sciences, chemistry.chemical_compound, [CHIM.ANAL]Chemical Sciences/Analytical chemistry, medicine, Environmental Chemistry, Organic chemistry, chemistry.chemical_classification, Natural product, Cyclodextrin, [CHIM.ORGA]Chemical Sciences/Organic chemistry, 010405 organic chemistry, Renewable Energy, Sustainability and the Environment, Glycoside, [CHIM.CATA]Chemical Sciences/Catalysis, General Chemistry, Bioproduction, 0104 chemical sciences, Bioavailability, 030104 developmental biology, chemistry
Abstract: International audience; Although resveratrol (3,5,4′-trihydroxy-stilbene) is one of the most studied natural product because of its biological properties such as antioxidant or anticancer, its low water solubility and stability (influenced by pH, light and increased temperature), as well as its propensity to oligomerize, limit its bioavailability and applications in nutraceutic, cosmetics or pharmaceutical industries. Besides, resveratrol production at the multigram scale through vine cell culture is limited by the tedious extraction of pure resveratrol from the bioconversion medium due to its complexation by cyclodextrins, the latter being used as elicitors in the bioproduction process. In this work, we have been able to overcome all these drawbacks by performing a single organic solvent-free enzymatic α-glycosylation directly from the β-cyclodextrin-resveratrol complex in water using β-cyclodextrin as glycoside-donor. The combined effects of five parameters (CGTase amount, cyclodextrin amount, cyclodextrin/resveratrol ratio, pH, and temperature) were studied by design of experiments (DoE) to maximize the glycosylation yield. The optimal setting point of parameters was obtained by response surface methodology (RSM). After optimization, an efficient α-glycosylation was performed being obtained 35% of molar yield. The major glycosides—two monoglycosides: 3-O-α-d-glucosyl-resveratrol and 4′-O-α-d-glucosyl-resveratrol and two diglycosides: 3-O-α-d-maltosyl-resveratrol and 4′-O-α-d-maltosyl-resveratrol—were characterized using a hyphenated liquid chromatography-solid phase extraction-nuclear magnetic resonance system, then separated and purified using centrifugal partition chromatography (CPC). Their antiradical properties, as well as that of their crude mixture, were evaluated through DPPH analysis. Results confirmed that the position 4′–OH is the best position for the glycosylation to maintain the highest antiradical properties.
Published: 2018
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31. New dendritic ionic liquids (DILs) for the extraction of metallic species from water

Author: Béatrice Marin, Chloe Maes, Alexandra Conreux, Sandrine Bouquillon, Anthony Robert, Safa Hayouni, Aminou Mohamadou, Institut de Chimie Moléculaire de Reims - UMR 7312 (ICMR), SFR Condorcet, Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS)-Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS)-SFR CAP Santé (Champagne-Ardenne Picardie Santé), Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Université de Reims Champagne-Ardenne (URCA)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Groupe d'Étude sur les Géomatériaux et Environnements Naturels, Anthropiques et Archéologiques - EA 3795 (GEGENAA), Université de Reims Champagne-Ardenne (URCA)-SFR Condorcet, Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS)-Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS)-Maison des Sciences Humaines de Champagne-Ardenne (MSH-URCA), and Université de Reims Champagne-Ardenne (URCA)-Université de Reims Champagne-Ardenne (URCA)
Subjects: Aqueous solution, Chemistry, Extraction (chemistry), 02 engineering and technology, General Chemistry, Fluorine-19 NMR, [CHIM.INOR]Chemical Sciences/Inorganic chemistry, 010402 general chemistry, 021001 nanoscience & nanotechnology, 01 natural sciences, 6. Clean water, Catalysis, 0104 chemical sciences, Metal, chemistry.chemical_compound, Elemental analysis, visual_art, Ionic liquid, Materials Chemistry, visual_art.visual_art_medium, [CHIM]Chemical Sciences, 0210 nano-technology, ComputingMilieux_MISCELLANEOUS, Nuclear chemistry
Abstract: Four dendritic ionic liquids (DILs) have been easily synthesized from 3rd generation PAMAM and PPI: PAMAM G3 NH3+ Tf2N− (1), PPI G3 NH3+ Tf2N− (2), PPI G3 NH2 Me+ BF4− (3) and PAMAM G3 NH2 Me+ BF4− (4). These DILs are fully characterized by spectroscopic methods (1H, 13C and 19F NMR) and elemental analysis. Compound 1 is hydrophobic while compounds 2–4 are hydrophilic. In order to apply these DILs for the extraction of aqueous metallic cations (Cu2+, Ni2+, Pb2+, Cd2+, and Ag+), liquid–liquid extraction and dialysis were performed. ICP technology has been used to reveal the amount of metallic cation that has been extracted. Compound 1 shows the best results especially for the extraction of Cu2+, Pb2+ and Ag+ cations (up to 98%). Two processes have been employed: liquid–liquid extraction and dialysis.
Published: 2018
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32. Syntheses, crystal structures, photo-physical properties, antioxidant and antifungal activities of Mg(II) 4,4′-bipyridine and Mg(II) pyrazine complexes of the 5,10,15,20 tetrakis(4–bromophenyl)porphyrin

Author: Habib Nasri, Sylviane Chevreux, Nesrine Amiri, Gilles Lemercier, Carine Machado Rodrigues, Fadia Ben Taheur, Vincent Dorcet, Université de Monastir - University of Monastir (UM), Institut de Chimie Moléculaire de Reims - UMR 7312 (ICMR), Université de Reims Champagne-Ardenne (URCA)-Institut de Chimie du CNRS (INC)-SFR CAP Santé (Champagne-Ardenne Picardie Santé), Université de Reims Champagne-Ardenne (URCA)-Université de Reims Champagne-Ardenne (URCA)-Centre National de la Recherche Scientifique (CNRS)-SFR Condorcet, Université de Reims Champagne-Ardenne (URCA)-Centre National de la Recherche Scientifique (CNRS)-Université de Reims Champagne-Ardenne (URCA)-Centre National de la Recherche Scientifique (CNRS), Institut des Sciences Chimiques de Rennes (ISCR), Université de Rennes (UR)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Ecole Nationale Supérieure de Chimie de Rennes (ENSCR)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Tunisian Ministry of Higher Education and Scientific Research / Ministère de l’Enseignement Supérieur et de la Recherche Scientifique, MESRS, SFR Condorcet, Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS)-Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS)-SFR CAP Santé (Champagne-Ardenne Picardie Santé), Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Université de Reims Champagne-Ardenne (URCA)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC)-Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Ecole Nationale Supérieure de Chimie de Rennes (ENSCR)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), and Institut National des Sciences Appliquées (INSA)-Université de Rennes (UNIV-RENNES)-Institut National des Sciences Appliquées (INSA)
Subjects: Photo-physical properties, Pyrazine, 4′-bipyridine ligand, X-Ray structures, chemistry.chemical_element, Porphyrin-based Mg(II) complexes, Crystal structure, [CHIM.INOR]Chemical Sciences/Inorganic chemistry, 010402 general chemistry, 01 natural sciences, Medicinal chemistry, Inorganic Chemistry, chemistry.chemical_compound, Materials Chemistry, [CHIM]Chemical Sciences, Physical and Theoretical Chemistry, 010405 organic chemistry, Ligand, Magnesium, Pyrazine ligand, Antioxidant and antifungal activities, Porphyrin, 0104 chemical sciences, 4,4'-Bipyridine, chemistry, Absorption (chemistry), Single crystal
Abstract: International audience; This study concerns the synthesis of 5,10,15,20-tetrakis(4-bromophenyl)porphyrin (H2TBrPP)-based magnesium(II) complexes involving 4,4′-bipyridine (4,4′-bpy) and pyrazine (pyz) ligand, for [Mg(TBrPP)(4,4′-bpy)] (1) and [Mg(TBrPP)(pyz)2] (2), respectively. New complexes 1 and 2 were characterized by single crystal X-ray diffraction, elemental analysis, infrared and nuclear magnetic resonance spectroscopies. The photo-physical properties were investigated by UV–visible absorption and emission spectroscopies. These new magnesium(II) complexes exhibit promising antifungal and antioxidant activities.
Published: 2021
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33. Characterization of a hemp-based agro-material: Influence of starch ratio and hemp shive size on physical, mechanical, and hygrothermal properties

Author: Chadi Maalouf, Guillaume Polidori, Hamzé Karaky, Alexandra Bourdot, Mohammed Lachi, Patricia Vázquez, Christophe Bliard, O. Douzane, Tala Moussa, Céline Thomachot-Schneider, Alexandre Gacoin, Abdelatif Merabtine, Groupe de Recherche en Sciences Pour l'Ingénieur - EA 4694 (GRESPI), Université de Reims Champagne-Ardenne (URCA)-SFR Condorcet, Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS)-Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS), Groupe d'Étude sur les Géomatériaux et Environnements Naturels, Anthropiques et Archéologiques - EA 3795 (GEGENAA), Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS)-Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS)-Maison des Sciences Humaines de Champagne-Ardenne (MSH-URCA), Université de Reims Champagne-Ardenne (URCA)-Université de Reims Champagne-Ardenne (URCA), Institut de Chimie Moléculaire de Reims - UMR 7312 (ICMR), Centre National de la Recherche Scientifique (CNRS)-Université de Reims Champagne-Ardenne (URCA)-SFR CAP Santé (Champagne-Ardenne Picardie Santé), Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-SFR Condorcet, EPF [Troyes], Laboratoire des technologies innovantes - UR UPJV 3899 (LTI), Université de Picardie Jules Verne (UPJV), Institut de Thermique, Mécanique, Matériaux (ITheMM), Université de Reims Champagne-Ardenne (URCA), SFR Condorcet, Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS)-Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS)-SFR CAP Santé (Champagne-Ardenne Picardie Santé), and Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Université de Reims Champagne-Ardenne (URCA)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)
Subjects: Thermal properties, Materials science, Starch, 020209 energy, 0211 other engineering and technologies, Mechanical properties, 02 engineering and technology, Optimal composition, [SPI.MAT]Engineering Sciences [physics]/Materials, [SPI]Engineering Sciences [physics], chemistry.chemical_compound, Wheat starch, [SPI.MECA.MEMA]Engineering Sciences [physics]/Mechanics [physics.med-ph]/Mechanics of materials [physics.class-ph], 021105 building & construction, 0202 electrical engineering, electronic engineering, information engineering, Electrical and Electronic Engineering, Composite material, Porosity, Civil and Structural Engineering, [PHYS]Physics [physics], [SPI.GCIV.CD]Engineering Sciences [physics]/Civil Engineering/Construction durable, Mechanical Engineering, Hemp starch agro-material, Porosity, Mechanical properties, Thermal properties, Hygric properties, [SPI.NRJ]Engineering Sciences [physics]/Electric power, Hemp starch agro-material, Building and Construction, [SPI.MECA]Engineering Sciences [physics]/Mechanics [physics.med-ph], Characterization (materials science), Hygric properties, chemistry, [SPI.OPTI]Engineering Sciences [physics]/Optics / Photonic, [SPI.MECA.THER]Engineering Sciences [physics]/Mechanics [physics.med-ph]/Thermics [physics.class-ph], [SPI.GCIV.MAT]Engineering Sciences [physics]/Civil Engineering/Matériaux composites et construction, [SPI.GCIV.EC]Engineering Sciences [physics]/Civil Engineering/Eco-conception
Abstract: International audience; Hemp shives is a lightweight material known for its insulating properties. Associating these bio-fibers with plant-based matrix instead of a mineral binder in insulation applications is of ecological interest. This article describes the study of a low environmental impact 100% plant-based material made solely from wheat starch and hemp shives. The hemp/starch ratio (H/S) influence and hemp shive size are studied. Samples are evaluated in terms of physical properties, mechanical behaviour and hygrothermal properties through an experimental approach. Results show that increasing 0–5 mm hemp shive proportion from 15% to 30% leads to a significant enhancement of the mechanical and hygric characteristics due to the load transfer and porosity. However, when the H/S ratio increases, mechanical and hygrothermal characteristics decrease slightly. Finally, the hemp-starch agro-material with H/S equal to 8 and 30% of 0–5 mm hemp shive seems to be the optimal composition between the studied samples.
Published: 2017
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34. Syringaresinol: A Renewable and Safer Alternative to Bisphenol A for Epoxy-Amine Resins

Author: Florent Allais, Louis Hollande, Marina Grimaldi, Patrick Balaguer, Paul-Henri Ducrot, Miguel Pernes, Johnny Beaugrand, Abdus Samad Jaufurally, Marine Janvier, Raphaël Ménard, Agro-Biotechnologies Industrielles (ABI), AgroParisTech, Institut Jean-Pierre Bourgin (IJPB), Institut National de la Recherche Agronomique (INRA)-AgroParisTech, Ingénierie, Procédés, Aliments (GENIAL), Fractionnement des AgroRessources et Environnement (FARE), Université de Reims Champagne-Ardenne (URCA)-Institut National de la Recherche Agronomique (INRA), Institut de Recherche en Cancérologie de Montpellier (IRCM - U1194 Inserm - UM), CRLCC Val d'Aurelle - Paul Lamarque-Institut National de la Santé et de la Recherche Médicale (INSERM)-Université de Montpellier (UM), Region Champagne-Ardenne, Conseil Departemental de la Marne, Reims Metropole, Fractionnement des AgroRessources et Environnement - UMR-A 614 (FARE), Université de Reims Champagne-Ardenne (URCA)-SFR Condorcet, Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS)-Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS)-Institut National de la Recherche Agronomique (INRA), CRLCC Val d'Aurelle - Paul Lamarque-Université de Montpellier (UM)-Institut National de la Santé et de la Recherche Médicale (INSERM), Université de Reims Champagne-Ardenne (URCA)-Institut National de la Recherche Agronomique (INRA)-SFR Condorcet, and Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS)-Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS)
Subjects: Syringaresinol, Bisphenol A, Polymers, Bisphenol, bisphenol A, [SDV]Life Sciences [q-bio], General Chemical Engineering, Thermosetting polymer, bisepoxide, 02 engineering and technology, 010402 general chemistry, 01 natural sciences, Lignans, chemistry.chemical_compound, Phenols, Diamine, Environmental Chemistry, Organic chemistry, syringaresinol, General Materials Science, Amines, Benzhydryl Compounds, Furans, Isophorone, Aqueous solution, Epoxy Resins, Green Chemistry Technology, Epoxy, 021001 nanoscience & nanotechnology, 0104 chemical sciences, General Energy, chemistry, DGEBA, visual_art, visual_art.visual_art_medium, resin, 0210 nano-technology
Abstract: A renewable bisepoxide, SYR-EPO, was prepared from syringaresinol, a naturally occurring bisphenol deriving from sinapic acid, by using a chemo-enzymatic synthetic pathway. Estrogenic activity tests revealed no endocrine disruption for syringaresinol. Its glycidylation afforded SYR-EPO with excellent yield and purity. This biobased, safe epoxy precursor was then cured with conventional and renewable diamines for the preparation of epoxy-amine resins. The resulting thermosets were thermally and mechanically characterized. Thermal analyses of these new resins showed excellent thermal stabilities (T-d5%=279-309 degrees C) and T-g ranging from 73 to 126 degrees C, almost reaching the properties of those obtained with the diglycidylether of bisphenol A (DGEBA), extensively used in the polymer industry (T-d5%= 319 degrees C and T-g = 150 degrees C for DGEBA/isophorone diamine resins). Degradation studies in NaOH and HCl aqueous solutions also highlighted the robustness of the syringaresinol-based resins, similar to bisphenol A (BPA). All these results undoubtedly confirmed the potential of syringaresinol as a greener and safer substitute for BPA
Published: 2017
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35. Photochemical reactivity of phenyl (methyl-tetrazolyl) ketone – hydrogen atom transfer vs. electron transfer

Author: Mario Andrés Gomez Fernandez, Corentin Lefebvre, Claire Richard, Norbert Hoffmann, Maxime Fréneau, SIGMA Clermont (SIGMA Clermont), Institut de Chimie de Clermont-Ferrand (ICCF), SIGMA Clermont (SIGMA Clermont)-Institut de Chimie du CNRS (INC)-Université Clermont Auvergne [2017-2020] (UCA [2017-2020])-Centre National de la Recherche Scientifique (CNRS), Institut de Chimie Moléculaire de Reims - UMR 7312 (ICMR), Université de Reims Champagne-Ardenne (URCA)-Institut de Chimie du CNRS (INC)-SFR CAP Santé (Champagne-Ardenne Picardie Santé), Université de Reims Champagne-Ardenne (URCA)-Université de Reims Champagne-Ardenne (URCA)-Centre National de la Recherche Scientifique (CNRS)-SFR Condorcet, Université de Reims Champagne-Ardenne (URCA)-Centre National de la Recherche Scientifique (CNRS)-Université de Reims Champagne-Ardenne (URCA)-Centre National de la Recherche Scientifique (CNRS), Centre National de la Recherche Scientifique (CNRS)-Université Clermont Auvergne [2017-2020] (UCA [2017-2020])-SIGMA Clermont (SIGMA Clermont), Centre National de la Recherche Scientifique (CNRS)-Université de Reims Champagne-Ardenne (URCA)-SFR CAP Santé (Champagne-Ardenne Picardie Santé), Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-SFR Condorcet, Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS)-Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS), SFR Condorcet, Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS)-Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS)-SFR CAP Santé (Champagne-Ardenne Picardie Santé), and Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Université de Reims Champagne-Ardenne (URCA)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)
Subjects: Cyclohexane, Pinacol, Diradical, [CHIM.ORGA]Chemical Sciences/Organic chemistry, Radical, 02 engineering and technology, General Chemistry, 010402 general chemistry, 021001 nanoscience & nanotechnology, Photochemistry, 01 natural sciences, Catalysis, 0104 chemical sciences, [CHIM.THEO]Chemical Sciences/Theoretical and/or physical chemistry, chemistry.chemical_compound, Electron transfer, Ketyl, chemistry, Yield (chemistry), Materials Chemistry, Flash photolysis, [CHIM]Chemical Sciences, [PHYS.PHYS.PHYS-CHEM-PH]Physics [physics]/Physics [physics]/Chemical Physics [physics.chem-ph], 0210 nano-technology
Abstract: International audience; Phenyl (methyl-tetrazolyl) ketone (1) is a synthesis intermediate of tetrazolyloxime fungicides and can also be generated upon their irradiation. Its photolysis is highly solvent-dependent, which prompted us to investigate the reaction mechanism more deeply. The nanosecond laser flash photolysis of 1 yielded the triplet excited state (λmax = 390/570 nm) immediately after the pulse. This was later converted into different secondary species that were identified using their specific reactivity as well as product studies. The ketyl radical (λmax = 315/475 nm) was generated in less than 0.02 μs in a good H-donor solvent such as 2-propanol and in around 0.06 μs in cyclohexane, a medium H-donor solvent. In 2-propanol, ketyl radicals decayed by a second order reaction to yield pinacol (yield 45%); in contrast, in cyclohexane, they decayed by a second order reaction in the bulk, leading to the formation of pinacol (yield 21%), and by recombination with the cyclohexyl radical in the cage in an apparent first order reaction to generate an adduct (yield 10%). In a polar and non H-atom donor solvent such as acetonitrile, the zwitterionic diradical (λmax = 460 nm) was formed in 0.6 μs with the final formation of an atypical dimer. Thus, two mechanisms of hydrogen atom transfer were observed. In the polar acetonitrile solvent, a two-step process occurred, where an electron was transferred first, followed by a proton. In the less polar 2-propanol and non-polar cyclohexane solvents, a one-step process occurred, where an electron and a proton were simultaneously transferred.
Published: 2019
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36. Three-phenyl transfer in palladium-catalyzed C C coupling reactions by triarylbismuths: A mechanistic study

Author: Majdi Hochlaf, Christophe Pichon, Sylvie Condon, Pricilia Kutudila, Miguel Ponce-Vargas, Roberto Linguerri, Laboratoire de Modélisation et Simulation Multi Echelle (MSME), Centre National de la Recherche Scientifique (CNRS)-Université Paris-Est Créteil Val-de-Marne - Paris 12 (UPEC UP12)-Université Paris-Est Marne-la-Vallée (UPEM), Institut de Chimie et des Matériaux Paris-Est (ICMPE), Université Paris-Est Créteil Val-de-Marne - Paris 12 (UPEC UP12)-Centre National de la Recherche Scientifique (CNRS), Institut de Chimie Moléculaire de Reims - UMR 7312 (ICMR), SFR Condorcet, Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS)-Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS)-SFR CAP Santé (Champagne-Ardenne Picardie Santé), Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Université de Reims Champagne-Ardenne (URCA)-Centre National de la Recherche Scientifique (CNRS), Université Paris-Est Marne-la-Vallée (UPEM)-Université Paris-Est Créteil Val-de-Marne - Paris 12 (UPEC UP12)-Centre National de la Recherche Scientifique (CNRS), Institut de Chimie du CNRS (INC)-Université Paris-Est Créteil Val-de-Marne - Paris 12 (UPEC UP12)-Centre National de la Recherche Scientifique (CNRS), Université de Reims Champagne-Ardenne (URCA)-Institut de Chimie du CNRS (INC)-SFR CAP Santé (Champagne-Ardenne Picardie Santé), Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS)-SFR Condorcet, Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS)-Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS), and Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Université de Reims Champagne-Ardenne (URCA)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)
Subjects: chemistry.chemical_element, Activation energy, 010402 general chemistry, 01 natural sciences, Catalysis, chemistry.chemical_compound, Computational chemistry, Reactivity (chemistry), ORGANOBISMUTH REAGENTS, PATH, Triarylbismuth, Physical and Theoretical Chemistry, EXCHANGE, Exergonic reaction, 010405 organic chemistry, Process Chemistry and Technology, Aryl, GAUSSIAN-BASIS SETS, DENSITY FUNCTIONAL CALCULATION, BISMUTH, Organobismuth chemistry, Palladium catalysis, 0104 chemical sciences, [CHIM.THEO]Chemical Sciences/Theoretical and/or physical chemistry, Density functional calculations, chemistry, CORRELATED MOLECULAR CALCULATION, Cross-coupling, Organic synthesis, [PHYS.PHYS.PHYS-CHEM-PH]Physics [physics]/Physics [physics]/Chemical Physics [physics.chem-ph], Palladium
Abstract: The unusual reactivity of organobismuth compounds in cross-coupling processes, where they act as multi-aryl sources, opens up new and exciting possibilities in the field of organic synthesis. In particular, the high reactivity of arylbismuths in multifold couplings with arylhalides suggests that three catalytic cycles occur simultaneously. Here, we carry out a computational investigation of a cross-coupling model reaction between bromobenzene (Ph-Br) and triphenylbismuthine (Ph3Bi), catalyzed by Pd(0). The energetic profile evidences the exergonic behavior of the overall reaction with a ΔrG of −38.2 kcal mol−1, in good agreement with the experimental results. Moreover, the largest activation energy (39.8 kcal mol−1) is found for the first Ph3Bi aryl transfer (PhP’1Ph1 → PhP’2Ph1), identified as the rate-determining step. Additional dynamical computations on these potential profiles are needed to confirm these findings. We expect this research to allow for a better understanding of organobismuth palladium-catalyzed CC coupling reactions and organobismuth chemistry in general.; The unusual reactivity of organobismuth compounds in cross-coupling processes, where they act as multi-aryl sources, opens up new and exciting possibilities in the field of organic synthesis. In particular, the high reactivity of arylbismuths in multifold couplings with arylhalides suggests that three catalytic cycles occur simultaneously. Here, we carry out a computational investigation of a cross-coupling model reaction between bromobenzene (Ph-Br) and triphenylbismuthine (Ph3Bi), catalyzed by Pd(0). The energetic profile evidences the exergonic behavior of the overall reaction with a Delta(r)G of -38.2 kcal mol(-1) , in good agreement with the experimental results. Moreover, the largest activation energy (39.8 kcal mol(-1)) is found for the first Ph3Bi aryl transfer ((P)(h)(P1)', (Ph1) -> (Ph)p(2)' (Ph1)), identified as the rate-determining step. Additional dynamical computations on these po-tential profiles are needed to confirm these findings. We expect this research to allow for a better understanding of organobismuth palladium-catalyzed C-C coupling reactions and organobismuth chemistry in general.
Published: 2019
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37. Electrodeposition of biphasic calcium phosphate coatings with improved dissolution properties

Author: Hicham Benhayoune, Joël Faure, Richard Drevet, Mélodie Marle-Spiess, Hassan El Btaouri, Stéphanie Sayen, Centre National de la Recherche Scientifique - CNRS (FRANCE), Institut de Chimie Moléculaire de Reims - ICMR (FRANCE), Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE), Université Toulouse III - Paul Sabatier - UT3 (FRANCE), Université de Reims - Champagne-Ardenne (FRANCE), Matrice extracellulaire et dynamique cellulaire (Reims, France), Centre interuniversitaire de recherche et d'ingenierie des matériaux (CIRIMAT), Centre National de la Recherche Scientifique (CNRS)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Institut de Chimie du CNRS (INC), Laboratoire d'Ingéniérie et Science des Matériaux - EA 4695 (LISM), Université de Reims Champagne-Ardenne (URCA)-SFR Condorcet, Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS)-Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS), Institut de Chimie Moléculaire de Reims - UMR 7312 (ICMR), SFR Condorcet, Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS)-Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS)-SFR CAP Santé (Champagne-Ardenne Picardie Santé), Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Université de Reims Champagne-Ardenne (URCA)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Matrice extracellulaire et dynamique cellulaire - UMR 7369 (MEDyC), Université de Reims Champagne-Ardenne (URCA)-SFR CAP Santé (Champagne-Ardenne Picardie Santé), and Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS)
Subjects: Controlled atmosphere, Materials science, Scanning electron microscope, Matériaux, chemistry.chemical_element, 02 engineering and technology, Thermal treatment, 010402 general chemistry, 01 natural sciences, Biphasic coating, Corrosion, [SPI.MAT]Engineering Sciences [physics]/Materials, Hydroxyapatite, chemistry.chemical_compound, Electrodeposition, General Materials Science, Dissolution-precipitation, Dissolution, Atomic emission spectroscopy, 021001 nanoscience & nanotechnology, Condensed Matter Physics, Phosphate, β-tricalcium phosphate, 0104 chemical sciences, [CHIM.POLY]Chemical Sciences/Polymers, chemistry, 0210 nano-technology, Nuclear chemistry, Titanium
Abstract: International audience; Biphasic calcium phosphate coatings (hydroxyapatite/β-tricalcium phosphate) on titanium substrate (Ti6Al4V) are synthetized by pulsed current electrodeposition coupled to a thermal treatment under controlled atmosphere. The experimental conditions of the process such as the hydrogen peroxide amount and the treatment temperature are optimized in order to obtain different coatings compositions. The physico-chemical and structural characterizations of the coatings are carried out respectively by scanning electron microscopy associated with energy dispersive X-ray spectroscopy (SEM-EDXS) and X-ray diffraction (XRD). The in vitro dissolution-precipitation properties of the coated substrates are investigated by immersions into Dulbecco's Modified Eagle Medium (DMEM) from 1 to 28 days. The calcium and phosphorus concentrations variations in the biological liquid are assessed by Induced Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES) for each immersion time. Furthermore, the corrosion behavior of the coated substrates are investigated using potentiodynamic polarization tests in DMEM and in Ringer's solution.The results show that this innovative process is suitable to synthesize two coatings composed respectively of HAP (37%)/β-TCP (63%) and HAP (62%)/β-TCP (38%) with different morphologies. On the other hand, the in vitro studies reveal that the coatings composition greatly influences their behavior in physiological medium, i.e. their dissolution-precipitation and their corrosion protection properties.
Published: 2019
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38. Structural and photoluminescent studies of non-centrosymmetric manganese(II) N-(2-pyridylmethyl)-(L)-alanine) dicyanamide

Author: Peter Ndifon Teke, Bridget N. Ndosiri, Aminou Mohamadou, Jérôme Marrot, Katia Nchimi Nono, Emmanuel N. Nfor, Paboudam Gbambie Awawou, Chimie de Coordination (ICMRCC), Institut de Chimie Moléculaire de Reims - UMR 7312 (ICMR), SFR Condorcet, Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS)-Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS)-SFR CAP Santé (Champagne-Ardenne Picardie Santé), Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Université de Reims Champagne-Ardenne (URCA)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-SFR Condorcet, Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Université de Reims Champagne-Ardenne (URCA)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Institut Lavoisier de Versailles (ILV), and Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)
Subjects: Alanine, Manganese, Photoluminescence, 010405 organic chemistry, Chemistry, Photoluminescent, chemistry.chemical_element, 010402 general chemistry, 01 natural sciences, 3. Good health, 0104 chemical sciences, Ion, chemistry.chemical_compound, Crystallography, Single crystal structure, Non-centrosymmetric, Octahedron, 13. Climate action, Dicyanamide, Orthorhombic crystal system, [CHIM.COOR]Chemical Sciences/Coordination chemistry, Single crystal, N-(2-Pyridylmethyl)-(L)-alanine)
Abstract: The dinuclear compound, [Mn 2 (Pyala) 2 (Dca) 2 (H 2 O)] n ·2H 2 O (1) (Pyala = N -(2-pyridylmethyl)-L-alanine and Dca = dicyanamide anion) has been synthesized and characterized by elemental analysis, IR and single crystal X-ray diffraction techniques. The crystal data for C 22 H 26 Mn 2 N 10 O 6 : orthorhombic, space group P 2 1 2 1 2 1 (no. 19), a = 10.3728(8) A, b = 15.9780(12) A, c = 16.3585(13) A, V = 2711.2(4) A 3 , Z = 4, T = 198(2) K, μ(MoKα) = 0.989 mm -1 , Dcalc = 1.559 g/cm 3 , 129607 reflections measured (3.564° ≤ 2Θ ≤ 60.046°), 7923 unique ( R int = 0.0324, R sigma = 0.0155) which were used in all calculations. The final R 1 was 0.0169 (I > 2σ(I)) and wR 2 was 0.0458 (all data). The obtained non-centrosymmetric dinuclear Mn(II) complex contains two unique Mn(II) cations with similar octahedral coordination environment. Photoluminescent measurements on the complex in the solid state show that it displays strong photoluminescence at 442 nm.
Published: 2019
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39. New 1,8-Naphthalimide Derivatives as Photoinitiators for Free-Radical Polymerization Upon Visible Light

Author: Céline Dietlin, Jacques Lalevée, Norbert Hoffmann, Soraya Zahouily, Malika Ibrahim-Ouali, Didier Gigmes, Fabrice Morlet-Savary, Bernadette Graff, Frédéric Dumur, Aude-Héloise Bonardi, Institut de Science des Matériaux de Mulhouse (IS2M), Centre National de la Recherche Scientifique (CNRS)-Matériaux et nanosciences d'Alsace (FMNGE), Institut de Chimie du CNRS (INC)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Réseau nanophotonique et optique, Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA), Institut des Sciences Moléculaires de Marseille (ISM2), Aix Marseille Université (AMU)-École Centrale de Marseille (ECM)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Institut de Chimie Radicalaire (ICR), Aix Marseille Université (AMU)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Aix Marseille Université (AMU), Institut de Chimie Moléculaire de Reims - UMR 7312 (ICMR), SFR Condorcet, Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS)-Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS)-SFR CAP Santé (Champagne-Ardenne Picardie Santé), Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Université de Reims Champagne-Ardenne (URCA)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), ANR-15-CE08-0012,FastPrinting,Nouvelles Résines Photosensibles pour l'Impression Rapide(2015), Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Matériaux et Nanosciences Grand-Est (MNGE), Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de la Santé et de la Recherche Médicale (INSERM)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Réseau nanophotonique et optique, Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA)-Centre National de la Recherche Scientifique (CNRS), Université de Reims Champagne-Ardenne (URCA)-Institut de Chimie du CNRS (INC)-SFR CAP Santé (Champagne-Ardenne Picardie Santé), Université de Reims Champagne-Ardenne (URCA)-Université de Reims Champagne-Ardenne (URCA)-Centre National de la Recherche Scientifique (CNRS)-SFR Condorcet, Université de Reims Champagne-Ardenne (URCA)-Centre National de la Recherche Scientifique (CNRS)-Université de Reims Champagne-Ardenne (URCA)-Centre National de la Recherche Scientifique (CNRS), Hoffmann, Norbert, Nouvelles Résines Photosensibles pour l'Impression Rapide - - FastPrinting2015 - ANR-15-CE08-0012 - AAPG2015 - VALID, Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS)-SFR Condorcet, and Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS)-Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS)
Subjects: [CHIM.POLY] Chemical Sciences/Polymers, Materials science, Radical polymerization, naphthalimide derivatives, 02 engineering and technology, 010402 general chemistry, Photochemistry, lcsh:Chemical technology, 01 natural sciences, Redox, Catalysis, law.invention, lcsh:Chemistry, chemistry.chemical_compound, law, light-emitting diodes (LEDs), lcsh:TP1-1185, Physical and Theoretical Chemistry, photoinitiators, visible light, Photodissociation, 021001 nanoscience & nanotechnology, 0104 chemical sciences, Photopolymer, [CHIM.POLY]Chemical Sciences/Polymers, chemistry, Polymerization, lcsh:QD1-999, 0210 nano-technology, Phosphine, free-radical polymerization, Visible spectrum, Light-emitting diode
Abstract: International audience; Photopolymerization processes, and especially those carried out under visible light, are more and more widespread for their multiple advantages compared to thermal processes. In the present paper, new 1,8-naphthalimide derivatives are proposed as photoinitiators for free-radical polymerization upon visible light exposure using light-emitting diodes (LEDs) at 395, 405, and 470 nm. These photoinitiators are used in combination with both iodonium salts and phosphine. The synthesis of these compounds as well as their excellent polymerization initiation ability for methacrylate monomers are presented in this article. A full picture of the involved chemical mechanisms is also provided thanks to photolysis, radical characterization, and redox measurements.
Published: 2019
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40. Sodium arsenite effect on Vitis vinifera L. Physiology

Author: Julie Vallet, Aurélie Songy, Christophe Clément, Marie Gantet, Mary-Lorène Goddard, Céline Tarnus, Philippe Larignon, Anne Boos, Pascale Ronot, Florence Fontaine, SFR Condorcet, Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS), Grand Lyon, Résistance Induite et Bioprotection des Plantes - EA 4707 (RIBP), Université de Reims Champagne-Ardenne (URCA)-SFR Condorcet, Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS)-Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS), Institut Pluridisciplinaire Hubert Curien (IPHC), Université de Strasbourg (UNISTRA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Sciences Analytiques et Interactions Ioniques et Biomoléculaires (DSA-IPHC), Université de Strasbourg (UNISTRA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de chimie moléculaire (LCM), Université de Strasbourg (UNISTRA)-Centre National de la Recherche Scientifique (CNRS), Unité de Recherche Vigne et Vins de Champagne Stress et Environnement - EA 4707 (URVVC), Centre Technique Interprofessionnel de la Vigne et du Vin (ITV), Laboratoire d'innovation moléculaire et applications (LIMA), Centre National de la Recherche Scientifique (CNRS)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Université de Strasbourg (UNISTRA), Université de Reims Champagne-Ardenne (URCA), Département Sciences Analytiques et Interactions Ioniques et Biomoléculaires (DSA-IPHC), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université de Strasbourg (UNISTRA)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université de Strasbourg (UNISTRA)-Centre National de la Recherche Scientifique (CNRS), Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), and Institut Français de la Vigne et du Vin (IFV)
Subjects: 0106 biological sciences, 0301 basic medicine, Vine, Sodium arsenite, Physiology, Arsenites, [SDV]Life Sciences [q-bio], Biological pest control, Plant Science, Biology, Photosynthesis, 01 natural sciences, Plant Roots, Polymerase Chain Reaction, 03 medical and health sciences, chemistry.chemical_compound, Sciences du Vivant [q-bio]/Sciences agricoles, [CHIM]Chemical Sciences, Vitis, Mode of action, ComputingMilieux_MISCELLANEOUS, Plant Diseases, Plant Stems, Plant physiology, Pesticide, Sodium Compounds, Fungicide, Plant Leaves, 030104 developmental biology, chemistry, 13. Climate action, Agronomy and Crop Science, 010606 plant biology & botany
Abstract: Sodium arsenite (NaAsO2) was especially used as a dormant spray to control grapevine trunk diseases (GTDs) in European vineyards until 2003 when it was banned. It was an efficient product but it was banned due to high risk for human health and the environment. Now, as one of the consequences with climatic changes, GTDs threaten the sustainability of vineyards since no similar and efficacious sprays are presently available to reduce the impact of GTDs. Research efforts were devoted to identify other active ingredients and biological control agents but they remained limited in term of efficacy. New solutions might follow from a better understanding of the modes of action of sodium arsenite which are currently lacking, specially its impact on grapevine physiology. For this study, grafted plants cv. Tempranillo were sprayed by sodium arsenite at the end of the winter. During the vegetative period, the impact on plant physiology was studied by measurement of the photosynthetic activity, the vine growth and development, and some defense responses. Our results showed that arsenic was translocated throughout the vine with an increasing gradient from the leaves to the root system, that photosynthesis was firstly reduced and then stimulated, and that plant tolerance responses were induced especially antioxidant system. The activation of grapevine defense responses by sodium arsenite could be a complementary action to fight fungal pathogens in addition to the fungicide effect.
Published: 2019
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41. Nanophotonic tools based on the conjugates of nanoparticles with the single-domain antibodies for multi-photon micrometastases detection and ultrasensitive biochemical assays

Author: Igor Nabiev, Frauke Alves, Daniel Baty, Pavel Samokhvalov, Alyona Sukhanova, Fernanda Ramos-Gomes, Patrick Chames, Centre de Recherche en Cancérologie de Marseille (CRCM), Aix Marseille Université (AMU)-Institut Paoli-Calmettes, Fédération nationale des Centres de lutte contre le Cancer (FNCLCC)-Fédération nationale des Centres de lutte contre le Cancer (FNCLCC)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Recherche en Nanosciences - EA 4682 (LRN), Université de Reims Champagne-Ardenne (URCA)-SFR CAP Santé (Champagne-Ardenne Picardie Santé), Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-SFR Condorcet, Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS)-Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS), Aix Marseille Université (AMU), Max Planck Institute for Experimental Medicine [Göttingen, Germany], The National Research Nuclear University MEPhI (Moscow Engineering Physics Institute) [Moscow, Russia], Université de Reims Champagne-Ardenne (URCA)-Université de Reims Champagne-Ardenne (URCA)-SFR Condorcet, Université de Reims Champagne-Ardenne (URCA)-Centre National de la Recherche Scientifique (CNRS)-Université de Reims Champagne-Ardenne (URCA)-Centre National de la Recherche Scientifique (CNRS), Centre National de la Recherche Scientifique (CNRS)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Institut Paoli-Calmettes, and Fédération nationale des Centres de lutte contre le Cancer (FNCLCC)-Fédération nationale des Centres de lutte contre le Cancer (FNCLCC)-Aix Marseille Université (AMU)
Subjects: 0303 health sciences, Photoluminescence, Chemistry, [SDV.IB.IMA]Life Sciences [q-bio]/Bioengineering/Imaging, [SDV]Life Sciences [q-bio], technology, industry, and agriculture, Nanophotonics, Nanoparticle, Quantum yield, 02 engineering and technology, equipment and supplies, 021001 nanoscience & nanotechnology, Orders of magnitude (mass), 3. Good health, 03 medical and health sciences, Quantum dot, Biophysics, [PHYS.PHYS.PHYS-MED-PH]Physics [physics]/Physics [physics]/Medical Physics [physics.med-ph], Molecule, [SPI.NANO]Engineering Sciences [physics]/Micro and nanotechnologies/Microelectronics, 0210 nano-technology, ComputingMilieux_MISCELLANEOUS, 030304 developmental biology, Conjugate
Abstract: Semiconductor quantum dots (QDs) are characterized by orders of magnitude higher multiphoton linear absorption cross-sections compared with conventional organic dyes. Combined with the QD photoluminescence quantum yield approaching 100%, this fact opens great prospects for the twophoton functional tumor imaging with QDs tagged with highly specific recognition molecules. Single-domain antibodies (sdAbs) or “nanobodies” derived from lamas are the smallest high-affinity recognition molecules, which may be tagged with the QDs thus permitting not only solid tumors multiphoton imaging but also rare disseminated cancer cells and micrometastases in the depth of the tissue to be detected. Additionally, unique photostability of QDs enables signal accumulation and significant enhancement of the sensitivity of routine biochemical and immunohistochemical assays to be obtained when the conjugates of QDs, instead of organic dyes, are used.
Published: 2019
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42. Triterpenes from Salvia argentea var. aurasiaca and their antibacterial and cytotoxic activities

Author: Sophie C. Gangloff, Hamid Morjani, Hichem Lakhal, Zahia Kabouche, Djemaa Berrehal, Amin Abedini, Meryem Lehbili, Ahmed Kabouche, Sara Bechkri, Laurence Voutquenne-Nazabadioko, Abdulmagid Alabdul Magid, Université frères Mentouri Constantine I (UMC), Institut de Chimie Moléculaire de Reims - UMR 7312 (ICMR), Université de Reims Champagne-Ardenne (URCA)-Institut de Chimie du CNRS (INC)-SFR CAP Santé (Champagne-Ardenne Picardie Santé), Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS)-SFR Condorcet, Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS)-Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS), Biomatériaux et inflammation en site osseux - EA 4691 (BIOS), Université de Reims Champagne-Ardenne (URCA)-Institut National de la Santé et de la Recherche Médicale (INSERM)-SFR CAP Santé (Champagne-Ardenne Picardie Santé), Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV), Université de Reims Champagne-Ardenne (URCA), Biospectroscopie Translationnelle - EA 7506 (BIOSPECT), PERRON, Brigitte, Université Mentouri-Constantine (LOST), Département de chimie, SFR Condorcet, Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS)-Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS)-SFR CAP Santé (Champagne-Ardenne Picardie Santé), and Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Université de Reims Champagne-Ardenne (URCA)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)
Subjects: Serial dilution, [SPI.OPTI] Engineering Sciences [physics]/Optics / Photonic, Phytochemicals, [SDV.BC.BC]Life Sciences [q-bio]/Cellular Biology/Subcellular Processes [q-bio.SC], [SDV.BC.IC] Life Sciences [q-bio]/Cellular Biology/Cell Behavior [q-bio.CB], medicine.disease_cause, 01 natural sciences, Ursane triterpenes, Terpene, chemistry.chemical_compound, Drug Discovery, [SDV.BC.IC]Life Sciences [q-bio]/Cellular Biology/Cell Behavior [q-bio.CB], Cytotoxic T cell, Salvia, Traditional medicine, biology, Salvia argentea L. var. aurasiaca, [PHYS.PHYS.PHYS-BIO-PH] Physics [physics]/Physics [physics]/Biological Physics [physics.bio-ph], Molecular Structure, Chemistry, General Medicine, Anti-Bacterial Agents, [SDV.BBM.BP]Life Sciences [q-bio]/Biochemistry, Molecular Biology/Biophysics, Staphylococcus aureus, [SPI.SIGNAL]Engineering Sciences [physics]/Signal and Image processing, [PHYS.PHYS.PHYS-BIO-PH]Physics [physics]/Physics [physics]/Biological Physics [physics.bio-ph], [SDV.BBM.BP] Life Sciences [q-bio]/Biochemistry, Molecular Biology/Biophysics, [SDV.CAN]Life Sciences [q-bio]/Cancer, Antineoplastic Agents, [SDV.CAN] Life Sciences [q-bio]/Cancer, medicine, Acetone, [SDV.BC.BC] Life Sciences [q-bio]/Cellular Biology/Subcellular Processes [q-bio.SC], Humans, [SPI.SIGNAL] Engineering Sciences [physics]/Signal and Image processing, Pharmacology, Lamiaceae, Bacteria, 010405 organic chemistry, Plant Components, Aerial, biology.organism_classification, Triterpenes, 0104 chemical sciences, 010404 medicinal & biomolecular chemistry, Salvia argentea, Algeria, [SPI.OPTI]Engineering Sciences [physics]/Optics / Photonic, K562 Cells
Abstract: International audience; Five undescribed ursane-type triterpenes, identified as 1β,3β,15α-trihydroxy-urs-9(11)-12-diene (1), 1β,3β,15α,28-tetrahydroxy-urs-9(11),12-diene (2), 1β,3β-dihydroxy-urs-9(11),12-dien-28-al (3), 1β,3β,7β,15α,28-pentahydroxy-urs-12-ene (4), and 1β,3β,15α-trihydroxy-urs-11-en-28-al (5), together with five known compounds (6–10), were isolated from the acetone extract of the dried aerial parts of Salvia argentea L. var. aurasiaca (Pomel) Batt. et Trab. (Lamiaceae). Structures were elucidated on the basis of extensive spectroscopic analysis including HR-ESI-MS, 1D- and 2D-NMR techniques and comparison with literature data. The antibacterial evaluation of compounds 1–10 of the acetone extract of the dried aerial parts, in addition to nine compounds (11–19) previously isolated from the extract of the fresh aerial parts, by bioautography on Staphylococcus aureus followed by the determination of MIC values of active compounds by serial dilution technique against five bacteria, revealed that two compounds have an antibacterial effect comparable to antibiotics.The cytotoxic activity evaluation of compounds 1–19 showed that Six compounds exhibited an antiproliferative activity against K562 and HT1080 cells with IC50 values ranging from 30.25 to 70.32 μM.
Published: 2019
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43. Polar mixture analysis by NMR under spin diffusion conditions in viscous sucrose solution and agarose gel

Author: François Pedinielli, Simon Mougeolle, Jean-Marc Nuzillard, Pedro Lameiras, Chimie des Substances Naturelles (ICMRCSN), Institut de Chimie Moléculaire de Reims - UMR 7312 (ICMR), Centre National de la Recherche Scientifique (CNRS)-Université de Reims Champagne-Ardenne (URCA)-SFR CAP Santé (Champagne-Ardenne Picardie Santé), Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-SFR Condorcet, Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS)-Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université de Reims Champagne-Ardenne (URCA)-SFR CAP Santé (Champagne-Ardenne Picardie Santé), Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS)-Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS), SFR Condorcet, Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS)-Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS)-SFR CAP Santé (Champagne-Ardenne Picardie Santé), and Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Université de Reims Champagne-Ardenne (URCA)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)
Subjects: [CHIM.ORGA]Chemical Sciences/Organic chemistry, Chemistry, Chemical polarity, Analytical chemistry, 02 engineering and technology, 010402 general chemistry, 021001 nanoscience & nanotechnology, 01 natural sciences, Homonuclear molecule, 0104 chemical sciences, NMR spectra database, chemistry.chemical_compound, Heteronuclear molecule, [CHIM.ANAL]Chemical Sciences/Analytical chemistry, Spin diffusion, Molecule, Agarose, Condensed Matter::Strongly Correlated Electrons, Physical and Theoretical Chemistry, 0210 nano-technology, Two-dimensional nuclear magnetic resonance spectroscopy
Abstract: International audience; The use of two new viscous solvents, sucrose solution and agarose gel, is reported for the first time for giving access to the individual NMR spectra of polar and potentially bioactive compounds in a mixture. Under viscous conditions, the tumbling rate of small and mid-sized molecules reduces in solution, so that the longitudinal cross-relaxation encourages the observation of spin diffusion. As a result, all of the resonances of the 1H nuclei within the same molecule tend to correlate together in a 2D NOESY spectrum, thus paving the way to mixture analysis. This work describes the individualization of four structurally close mixed dipeptides: Leu–Val, Leu–Tyr, Gly–Tyr and Ala–Tyr dissolved in each of sucrose solution and agarose gel, by means of spin diffusion in homonuclear selective 1D NOESY, selective 2D NOESY experiments and heteronuclear 2D HSQC-NOESY. Sucrose solution should be preferred to agarose gel for the investigation of mixtures made of small and flexible polar compounds, due to its capability to give rise to more suitable viscous conditions mandatory for efficient spin diffusion, even though agarose gel reveals the benefit of not offering intense residual solvent proton signals due to active transverse relaxation.
Published: 2019
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44. Characterization of beet-pulp fiber reinforced potato starch biopolymer composites for building applications

Author: Guillaume Polidori, Mohammed Lachi, Chadi Maalouf, Hamzé Karaky, Alexandre Gacoin, Christophe Bliard, Nadim El Wakil, Groupe de Recherche en Sciences Pour l'Ingénieur - EA 4694 (GRESPI), Université de Reims Champagne-Ardenne (URCA)-SFR Condorcet, Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS)-Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS), Institut de Chimie Moléculaire de Reims - UMR 7312 (ICMR), SFR Condorcet, Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS)-Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS)-SFR CAP Santé (Champagne-Ardenne Picardie Santé), Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Université de Reims Champagne-Ardenne (URCA)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Institut de Thermique, Mécanique, Matériaux (ITheMM), and Université de Reims Champagne-Ardenne (URCA)
Subjects: [SPI.OTHER]Engineering Sciences [physics]/Other, Materials science, Sugar beet pulp, Starch, 0211 other engineering and technologies, Moisture buffering value, Mechanical properties, 02 engineering and technology, Building insulation, 7. Clean energy, [SPI.MAT]Engineering Sciences [physics]/Materials, chemistry.chemical_compound, Noise reduction coefficient, Flexural strength, Hygrothermal properties, 021105 building & construction, General Materials Science, Composite material, Porosity, Beet pulp, Potato starch, Civil and Structural Engineering, [SPI.ACOU]Engineering Sciences [physics]/Acoustics [physics.class-ph], [SPI.GCIV.CD]Engineering Sciences [physics]/Civil Engineering/Construction durable, Moisture, food and beverages, Bio-sourced composite, Building and Construction, 021001 nanoscience & nanotechnology, Compressive strength, chemistry, [SPI.MECA.THER]Engineering Sciences [physics]/Mechanics [physics.med-ph]/Thermics [physics.class-ph], Sound absorption, [SPI.GCIV.MAT]Engineering Sciences [physics]/Civil Engineering/Matériaux composites et construction, 0210 nano-technology
Abstract: International audience; This work deals with the making of a new renewable green material for building insulation from sugar beet pulp and potato starch. The material is both lightweight and ecofriendly. The influence of starch/extruded sugar beet pulp mass ratio (S/EBP) is studied. Four mass ratios are considered, 10, 20, 30 and 40% (relative to the starch). Samples are characterized in terms of absolute and bulk density, sound absorption coefficient, compressive and flexural strength, as well as and hygrothermal properties (the moisture buffering value and thermal conductivity). The sound absorption coefficient shows that this material is a good sound absorber, especially in medium and high frequencies. The sound absorption capacity depends on the fiber content and the humidity content. The best values are between 0.6 and 0.8. The compressive strength increases linearly with the S/EBP weight ratio to reach 0.52 MPa and the compressive strain is 30%. The elasticity modulus and the Poisson’s ratios were also studied. The transversal and vertical strain were measured using ARAMIS optical system. The moisture buffering value was measured according to Nordtest Protocol. The recorded moisture buffering value was between 2.6 and 2.8 g/(%RH.m2) and shows that the sugar beet pulp-starch composite is an excellent hygric regulator. The thermal conductivity is to around 0.070 W/(m·K). The results obtained shows that increasing starch amount tends to decrease composite porosity but increases thermal conductivity and mechanical properties. Depending on the starch content, beet pulp composites have a good thermal and acoustical performance and can be used as building materials.
Published: 2019
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45. Isolation and structure elucidation of cyclopeptide alkaloids from the leaves of Heisteria parvifolia

Author: Hamid Morjani, Félix Zanahi Tonzibo, Faustin Aka Kabran, Michel Boni Bitchi, Dominique Harakat, Laurence Voutquenne-Nazabadioko, Abdulmagid Alabdul Magid, Philomène Akoua Yao-Kouassi, Université Félix Houphouët-Boigny (UFHB), Institut de Chimie Moléculaire de Reims - UMR 7312 (ICMR), SFR Condorcet, Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS)-Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS)-SFR CAP Santé (Champagne-Ardenne Picardie Santé), Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Université de Reims Champagne-Ardenne (URCA)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Biospectroscopie Translationnelle - EA 7506 (BIOSPECT), Université de Reims Champagne-Ardenne (URCA), Centre National de la Recherche Scientifique (CNRS)-Université de Reims Champagne-Ardenne (URCA)-SFR CAP Santé (Champagne-Ardenne Picardie Santé), Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-SFR Condorcet, and Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS)-Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS)
Subjects: 0106 biological sciences, Models, Molecular, [PHYS.PHYS.PHYS-BIO-PH]Physics [physics]/Physics [physics]/Biological Physics [physics.bio-ph], Molecular Conformation, Antineoplastic Agents, [SDV.CAN]Life Sciences [q-bio]/Cancer, Plant Science, [SDV.BC.BC]Life Sciences [q-bio]/Cellular Biology/Subcellular Processes [q-bio.SC], Cyclopeptide alkaloids, [CHIM.THER]Chemical Sciences/Medicinal Chemistry, Horticulture, 01 natural sciences, Biochemistry, Heisteria, Peptides, Cyclic, chemistry.chemical_compound, Alkaloids, [CHIM.ANAL]Chemical Sciences/Analytical chemistry, [SDV.BC.IC]Life Sciences [q-bio]/Cellular Biology/Cell Behavior [q-bio.CB], Cytotoxic T cell, Humans, Molecular Biology, Heisteria parvifolia, biology, Cytotoxic activity, 010405 organic chemistry, Cell growth, Myeloid leukemia, General Medicine, [SDV.BV.BOT]Life Sciences [q-bio]/Vegetal Biology/Botanics, Isolation (microbiology), biology.organism_classification, 3. Good health, 0104 chemical sciences, Plant Leaves, [SDV.BBM.BP]Life Sciences [q-bio]/Biochemistry, Molecular Biology/Biophysics, Chronic myeloid leukemia (K565) cell line, chemistry, Cell culture, [SPI.OPTI]Engineering Sciences [physics]/Optics / Photonic, Olacaceae, K562 Cells, [SPI.SIGNAL]Engineering Sciences [physics]/Signal and Image processing, Derivative (chemistry), 010606 plant biology & botany
Abstract: International audience; Heisteria parvifolia Sm. is prescribed in traditional medecine against numerous diseases in Côte d'Ivoire. Due to the shortcoming in scientifical knowledge of use of this species, our investigations revealed five undescribed cyclopeptide alkaloids added to one known derivative namely anorldianine. These compounds were elucidated by 1D and 2D-NMR experiments and comparison with literature data, and confirmed by HR-ESI-MS. Cytotoxic activity evaluation of these compounds against the chronic myeloid leukemia (K565) cell line exhibited an antiproliferative activity with cell growth inhibition from 13% to 46%.
Published: 2019
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46. Wheat Bran Pretreatment by Room Temperature Ionic Liquid-Water Mixture: Optimization of Process Conditions by PLS-Surface Response Design: Optimization of Process Conditions by PLS-Surface Response Design

Author: Eric Husson, Romain Roulard, Catherine Sarazin, Doriane Gérard, Caroline Rémond, Harivoni Rakotoarivonina, Jorge Saavedra-Torrico, Isabelle Gosselin, Monica Araya-Farias, Virginie Lambertyn, Institut Galien Paris-Sud (IGPS), Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS), Génie Enzymatique et Cellulaire (GEC), Université de Technologie de Compiègne (UTC)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS), Pontificia Universidad Católica de Valparaíso (PUCV), Laboratoire d'Ingénierie des Systèmes Biologiques et des Procédés (LISBP), Centre National de la Recherche Scientifique (CNRS)-Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Institut National de la Recherche Agronomique (INRA), Université de Picardie Jules Verne (UPJV), Fractionnement des AgroRessources et Environnement - UMR-A 614 (FARE), Université de Reims Champagne-Ardenne (URCA)-SFR Condorcet, Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS)-Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS)-Institut National de la Recherche Agronomique (INRA), Université Paris-Sud - Paris 11 (UP11)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Fractionnement des AgroRessources et Environnement (FARE), Université de Reims Champagne-Ardenne (URCA)-Institut National de la Recherche Agronomique (INRA), Interreg France-Wallonie-Vlaanderen through the ValBran project, European Union (EU), Province West of Flanders, Université de Reims Champagne-Ardenne (URCA)-Institut National de la Recherche Agronomique (INRA)-SFR Condorcet, Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS)-Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS), Génie Enzymatique et Cellulaire. Reconnaissance Moléculaire et Catalyse - UMR CNRS 7025 (GEC UPJV), Institut National de la Recherche Agronomique (INRA)-Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT)-Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT)-Centre National de la Recherche Scientifique (CNRS), Biologie des Plantes et Innovation - UR UPJV 3900 (BIOPI), Université de Picardie Jules Verne (UPJV)-Transfrontalière BioEcoAgro - UMR 1158 (BioEcoAgro), Université d'Artois (UA)-Université de Liège-Université de Picardie Jules Verne (UPJV)-Université du Littoral Côte d'Opale (ULCO)-Université de Lille-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-JUNIA (JUNIA), Université catholique de Lille (UCL)-Université catholique de Lille (UCL)-Université d'Artois (UA)-Université de Liège-Université du Littoral Côte d'Opale (ULCO)-Université de Lille-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-JUNIA (JUNIA), Université catholique de Lille (UCL)-Université catholique de Lille (UCL), and Sarazin, Catherine
Subjects: Lignocellulosic biomass, 02 engineering and technology, Xylose, biomasse lignocellulosique, 010402 general chemistry, 7. Clean energy, 01 natural sciences, lcsh:Chemistry, rendement en sucre, Hydrolysis, chemistry.chemical_compound, [CHIM.GENI]Chemical Sciences/Chemical engineering, hemicellulolytic cocktail, Enzymatic hydrolysis, biomasse, room temperature ionic liquid, Sugar, partial least square surface response design, ENZYMATIC-HYDROLYSIS, LIGNOCELLULOSIC BIOMASS, SUGARCANE BAGASSE, C-13 NMR, CELLULOSE, SACCHARIFICATION, STRAW, BIOREFINERY, DISSOLUTION, ACID, Original Research, 2. Zero hunger, ionic liquid-water mixture, Bran, son de blé, enzymatic hydrolysis, General Chemistry, pretreatment, 021001 nanoscience & nanotechnology, 0104 chemical sciences, Chemistry, Monomer, chemistry, lcsh:QD1-999, Ionic liquid, prétraitement, 0210 nano-technology, wheat bran, Nuclear chemistry
Abstract: Room Temperature Ionic Liquids (RTILs) pretreatment are well-recognized to improve the enzymatic production of platform molecules such as sugar monomers from lignocellulosic biomass (LCB). The conditions for implementing this key step requires henceforth optimization to reach a satisfactory compromise between energy saving, required RTIL amount and hydrolysis yields. Wheat bran (WB) and destarched wheat bran (DWB), which constitute relevant sugar-rich feedstocks were selected for this present study. Pretreatments of these two distinct biomasses with various 1-ethyl-3-methylimidazolium acetate ([C2mim][OAc])-water mixtures prior to hydrolysis catalyzed by hemicellulolytic cocktail (Cellic CTec2) were finely investigated. The main operating conditions such as pretreatment temperature (25-150 degrees C), time (40-180 min), WB and DWB loading (2-5% w/v) and concentration of [C2mim][OAc] in water [10-100% (v/v)] were screened through glucose and xylose yields and then optimized through a Partial Least Square (PLS)-Second Order Design. In an innovative way, the PLS results showed that the four factors and their interactions could be well-fitted by a second-order model (p < 0.05). The quadratic PLS models were used to predict optimal pretreatment conditions. Thus, maximum glucose (83%) and xylose (95%) yields were obtained from enzymatic hydrolysis of WB pretreated at 150 degrees C for 40 min with 10% of [C2mim][OAc] in water and 5% of WB loading. For DWB, maximum glucose (100%) and xylose (57%) yields were achieved for pretreatment temperatures of 150 degrees C and 25 degrees C, respectively. The required duration was still 40 min, with 20% of [C2mim][OAc] in water and a 5% DWB loading. Then, Multiple Response Optimization (MRO) performed by Nelder-Mead Simplex Method displayed sugar yields similar to those obtained by individual PLS optimization. This complete statistical study confirmed that the established models were appropriate to predict the sugar yields achieved after different pretreatment conditions from WB and DWB biomasses. Finally, Scanning Electron microscopy (SEM) studies allowed us to establish clearer link between structural changes induced by pretreatment and the best enzymatic performances obtained.
Published: 2019
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47. High speed atomic force microscopy to investigate the interactions between toxic Aβ 1-42 peptides and model membranes in real time: impact of the membrane composition

Author: Eléonore Lambert, Christophe Cullin, Claude Bobo, Cécile Feuillie, Sophie Lecomte, Sarah Henry, Michael Molinari, Maxime Ewald, Chimie et Biologie des Membranes et des Nanoobjets (CBMN), École Nationale d'Ingénieurs des Travaux Agricoles - Bordeaux (ENITAB)-Institut de Chimie du CNRS (INC)-Université de Bordeaux (UB)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Recherche en Nanosciences - EA 4682 (LRN), SFR Condorcet, Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS)-Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS)-Université de Reims Champagne-Ardenne (URCA)-SFR CAP Santé (Champagne-Ardenne Picardie Santé), Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV), Institut de biochimie et génétique cellulaires (IBGC), Université Bordeaux Segalen - Bordeaux 2-Centre National de la Recherche Scientifique (CNRS), Université de Reims Champagne-Ardenne (URCA)-SFR CAP Santé (Champagne-Ardenne Picardie Santé), Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-SFR Condorcet, and Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS)-Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS)
Subjects: chemistry.chemical_classification, [PHYS]Physics [physics], Ganglioside, Amyloid, Cholesterol, Peptide, High Speed AFM, 02 engineering and technology, Amyloid / membrane interaction, [CHIM.MATE]Chemical Sciences/Material chemistry, 010402 general chemistry, 021001 nanoscience & nanotechnology, 01 natural sciences, 0104 chemical sciences, [CHIM.THEO]Chemical Sciences/Theoretical and/or physical chemistry, chemistry.chemical_compound, Membrane, chemistry, Phosphatidylcholine, Microscopy, Biophysics, [CHIM]Chemical Sciences, General Materials Science, 0210 nano-technology, Sphingomyelin
Abstract: Due to an aging population, neurodegenerative diseases have become a major health issue, the most common being Alzheimer’s disease. The mechanisms leading to neuronal loss still remain unclear but recent studies suggest that soluble Aβ oligomers have deleterious effects on neuronal membranes. Here, high-speed atomic force microscopy was used to assess the effect of oligomeric species of a variant of Aβ1-42 amyloid peptide on model membranes with various lipid compositions. Results showed that the peptide does not interact with membranes composed of phosphatidylcholine and sphingomyelin. Ganglioside GM1, but not cholesterol, is required for the peptide to interact with the membrane. Interestingly, when they are both present, a fast disruption of the membrane was observed. It suggests that the presence of ganglioside GM1 and cholesterol in membranes promotes the interaction of the oli- gomeric Aβ1-42 peptide with the membrane. This interaction leads to the membrane’s destruction in a few seconds. This study highlights the power of high-speed atomic force microscopy to explore lipid–protein interactions with high spatio-temporal resolution.
Published: 2019
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48. Stoichiometry constraints challenge the potential of agroecological practices for the soil C storage. A review

Author: Sylvie Recous, Tanguy Daufresne, Valérie Viaud, Sylvain Pellerin, Isabelle Bertrand, Ecologie fonctionnelle et biogéochimie des sols et des agro-écosystèmes (UMR Eco&Sols), Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro), Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro)-Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Institut de Recherche pour le Développement (IRD)-Institut National de la Recherche Agronomique (INRA), Sol Agro et hydrosystème Spatialisation (SAS), Institut National de la Recherche Agronomique (INRA)-AGROCAMPUS OUEST, Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro), Interactions Sol Plante Atmosphère (UMR ISPA), Institut National de la Recherche Agronomique (INRA)-Ecole Nationale Supérieure des Sciences Agronomiques de Bordeaux-Aquitaine (Bordeaux Sciences Agro), Fractionnement des AgroRessources et Environnement (FARE), Université de Reims Champagne-Ardenne (URCA)-Institut National de la Recherche Agronomique (INRA), Institut National de la Recherche Agronomique (INRA)-Institut de Recherche pour le Développement (IRD)-Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro)-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro), Interactions Sol Plante Atmosphère (ISPA), Fractionnement des AgroRessources et Environnement - UMR-A 614 (FARE), Université de Reims Champagne-Ardenne (URCA)-Institut National de la Recherche Agronomique (INRA)-SFR Condorcet, Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS)-Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS), Université de Reims Champagne-Ardenne (URCA)-SFR Condorcet, Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS)-Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS)-Institut National de la Recherche Agronomique (INRA), Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Institut de Recherche pour le Développement (IRD)-Institut National de la Recherche Agronomique (INRA)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro)-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro), and Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Institut de Recherche pour le Développement (IRD)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Institut Agro Montpellier
Subjects: 0106 biological sciences, Environmental Engineering, stochiometry, [SDV]Life Sciences [q-bio], chemistry.chemical_element, plant, 01 natural sciences, nitrogen, Environmental protection, Organic matter, phosphorus, Agroecology, organic matter, Sustainable development, chemistry.chemical_classification, business.industry, Phosphorus, carbon, 04 agricultural and veterinary sciences, 15. Life on land, Nitrogen, chemistry, Agriculture, 040103 agronomy & agriculture, 0401 agriculture, forestry, and fisheries, Environmental science, agricultural soils, business, Agronomy and Crop Science, Carbon, Stoichiometry, 010606 plant biology & botany
Abstract: To date, the stoichiometry concept has been poorly used to explore C, N, and P cycles in agroecosystems. As agriculture is now under pressure to reduce the use of synthetic inputs, ecological processes and alternative agricultural practices will become the main regulators of the relationships between C, N, and P and thereby of nutrient availability and C storage in soils. In this paper, we review the ecological theories underpinning the concepts of homeostasis and stoichiometric flexibility, their application to agroecosystems, and how stoichiometry could constraint agroecological practices related to nutrient availability and soil C storage. Our main findings are (1) optimal C:N:P ratios exist at the species level, reflecting a range of ecological strategies and representing a keystone constraint for the coupling of C, N, and P cycles, resulting in canonical ratios at the community level. Stoichiometric flexibility nevertheless exists from the organism level-autotrophs having higher flexibility than heterotrophs-to the community level, depending on assembly rules. (2) Agroecosystems are stoichiometrically constrained especially in the soil compartment, due to the low stoichiometric flexibility of microorganisms at the community level. (3) Agricultural practices such as fertilization decrease N:P ratios in soil surface when total P is considered, while C:N ratios remained constant. (4) Stoichiometry homeostasis constraints for soil C storage require the availability of N and P. They can be supported by agroecological practices that promote nutrient recycling (organic fertilization, permanent soil cover, N fixation). The 45-Tg N and 4.8-Tg P needed to increase the C stock of cropped soils by "4 per mille per year" can be also provided by suppressing nutrient losses. We conclude that two soil compartments should be more investigated to evaluate their potential to bypass stoichiometric constraints and foster C storage while reducing chemical inputs: deep soil horizons and particulate organic matter fraction.
Published: 2019
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49. Glucosinolates of Lepidium graminifolium L. (Brassicaceae) from Croatia

Author: Patrick Rollin, Jean-Marc Nuzillard, Ivica Blažević, Sabine Montaut, Dominique Harakat, Sharayah Read, Laurentian University, University of Split, Institut de Chimie Moléculaire de Reims - UMR 7312 (ICMR), Université de Reims Champagne-Ardenne (URCA)-Institut de Chimie du CNRS (INC)-SFR CAP Santé (Champagne-Ardenne Picardie Santé), Université de Reims Champagne-Ardenne (URCA)-Université de Reims Champagne-Ardenne (URCA)-Centre National de la Recherche Scientifique (CNRS)-SFR Condorcet, Université de Reims Champagne-Ardenne (URCA)-Centre National de la Recherche Scientifique (CNRS)-Université de Reims Champagne-Ardenne (URCA)-Centre National de la Recherche Scientifique (CNRS), Institut de Chimie Organique et Analytique (ICOA), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université d'Orléans (UO)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Chimie des Substances Naturelles (ICMRCSN), SFR Condorcet, Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS)-Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS)-SFR CAP Santé (Champagne-Ardenne Picardie Santé), Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Université de Reims Champagne-Ardenne (URCA)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-SFR Condorcet, Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Université de Reims Champagne-Ardenne (URCA)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Université d'Orléans (UO)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut de Chimie du CNRS (INC)-Institut National de la Santé et de la Recherche Médicale (INSERM), Centre National de la Recherche Scientifique (CNRS)-Université de Reims Champagne-Ardenne (URCA)-SFR CAP Santé (Champagne-Ardenne Picardie Santé), Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-SFR Condorcet, Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS)-Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS), Université d'Orléans (UO)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de la Santé et de la Recherche Médicale (INSERM), Nuzillard, Jean-Marc, and Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS)-SFR Condorcet
Subjects: [CHIM.ANAL] Chemical Sciences/Analytical chemistry, Plant Science, Lepidium graminifolium, 01 natural sciences, Biochemistry, glucolepigramin, [SDV.BV.BOT] Life Sciences [q-bio]/Vegetal Biology/Botanics, Analytical Chemistry, chemistry.chemical_compound, [CHIM.ANAL]Chemical Sciences/Analytical chemistry, Botany, [SDV.BBM.BC]Life Sciences [q-bio]/Biochemistry, Molecular Biology/Biochemistry [q-bio.BM], [SDV.BBM.BC] Life Sciences [q-bio]/Biochemistry, Molecular Biology/Biochemistry [q-bio.BM], ComputingMilieux_MISCELLANEOUS, Brassicaceae, glucosinolate, LC-MS, NMR, biology, 010405 organic chemistry, Organic Chemistry, [SDV.BV.BOT]Life Sciences [q-bio]/Vegetal Biology/Botanics, biology.organism_classification, 0104 chemical sciences, 010404 medicinal & biomolecular chemistry, Inflorescence, chemistry, Glucosinolate
Abstract: The glucosinolate (GSL) profiles (inflorescence, stem, root, and fruit) of the wild-growing plant Lepidium graminifolium L. (Brassicaceae) from Croatia was established by LC-MS analysis. During this investigation, we confirmed the presence of benzyl- (1), 3-methoxybenzyl- (2), 4-hydroxybenzyl- (4), 4-methoxyindol-3-ylmethyl- (7) GSLs and reported for the first time in the plant the presence of (2 R)-hydroxybut-3-enyl- (11), (2S)-hydroxybut-3-enyl- (12), but-3-enyl- (13), and 2-phenylethyl- (14) GSLs. Finally, 3-hydroxybenzyl GSL (3) was isolated for the first time from L. graminifolium inflorescence and characterised by spectroscopic data interpretation.
Published: 2019
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50. Mechanical and thermal characterization of a beet pulp-starch composite for building applications

Author: Mohammed Lachi, Christophe Bliard, Chadi Maalouf, Guillaume Polidori, Alexandre Gacoin, Hamzé Karpaky, Groupe de Recherche en Sciences Pour l'Ingénieur - EA 4694 (GRESPI), Université de Reims Champagne-Ardenne (URCA)-SFR Condorcet, Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS)-Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS), Institut de Chimie Moléculaire de Reims - UMR 7312 (ICMR), SFR Condorcet, Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS)-Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Centre National de la Recherche Scientifique (CNRS)-SFR CAP Santé (Champagne-Ardenne Picardie Santé), and Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Université de Reims Champagne-Ardenne (URCA)-Université de Picardie Jules Verne (UPJV)-Université de Reims Champagne-Ardenne (URCA)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)
Subjects: Materials science, Starch, 020209 energy, 0211 other engineering and technologies, 02 engineering and technology, engineering.material, 7. Clean energy, [SPI.MAT]Engineering Sciences [physics]/Materials, chemistry.chemical_compound, Thermal conductivity, Flexural strength, 021105 building & construction, 0202 electrical engineering, electronic engineering, information engineering, Composite material, Beet pulp, Porosity, Potato starch, lcsh:Environmental sciences, lcsh:GE1-350, [SPI.GCIV.CD]Engineering Sciences [physics]/Civil Engineering/Construction durable, Pulp (paper), fungi, food and beverages, Compressive strength, chemistry, engineering, [SPI.MECA.THER]Engineering Sciences [physics]/Mechanics [physics.med-ph]/Thermics [physics.class-ph], [SPI.GCIV.MAT]Engineering Sciences [physics]/Civil Engineering/Matériaux composites et construction
Abstract: International audience; This work shows the making of a new bio-based material for building insulation from sugar beet pulp and potato starch. The material is both lightweight and ecofriendly. The influence of starch/ sugar beet pulp ratio (S/BP) is studied. Four binder mass dosages are considered, 10, 20, 30 and 40% (relative to the beet pulp). Samples are characterized in terms of absolute and bulk density, compressive and flexural strength, as well as thermal properties (thermal conductivity and thermal inertia). The compressive strength increases linearly with the S/BP mass ratio to reach 0.52 MPa and the compressive strain is 30%. The thermal conductivity is to around 0.070 W/m. K. The results obtained shows that increasing starch amount tends to decrease composite porosity but increases thermal conductivity and mechanical properties. Depending on the starch content, beet pulp composites have a good thermal and can be used as building materials.
Published: 2019
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1,072 results on '"SFR Condorcet"'

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