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6 results on '"Marlène Palluel"'

2. One Pot Synthesis of Dithiolane Dendron Functionalized Gold Nanoparticles

Author

Barbara Freis, Francis Perton, Sylvie Begin-Colin, Damien Mertz, Marlène Palluel, Céline Kiefer, Institut de Physique et Chimie des Matériaux de Strasbourg (IPCMS), and Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS)

Subjects
Chemistry, One-pot synthesis, [CHIM.MATE]Chemical Sciences/Material chemistry, [CHIM.THER]Chemical Sciences/Medicinal Chemistry, 02 engineering and technology, 010402 general chemistry, 021001 nanoscience & nanotechnology, 01 natural sciences, Combinatorial chemistry, 0104 chemical sciences, Dithiolane, Inorganic Chemistry, chemistry.chemical_compound, Colloidal gold, Dendrimer, 0210 nano-technology, ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2021

3. Room temperature optoelectronic devices operating with spin crossover nanoparticles

Author

Marlène Palluel, Bernard Doudin, Jean-Francois Dayen, Nikita Konstantinov, Guillaume Chastanet, Nathalie Daro, Bohdan Kundys, Mohamed Soliman, Institut de Physique et Chimie des Matériaux de Strasbourg (IPCMS), Université de Strasbourg (UNISTRA)-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)-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 Universitaire de France (IUF), Ministère de l'Education nationale, de l’Enseignement supérieur et de la Recherche (M.E.N.E.S.R.), Institut de Chimie de la Matière Condensée de Bordeaux (ICMCB), Université de Bordeaux (UB)-Institut Polytechnique de Bordeaux-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), The financial support from the Agence Nationale de la Recherche (HEROES ANR-17-CE09-0010-01, MIXES ANR-19-CE09-0028) is acknowledged as well as that from the CNRS, University of Bordeaux, and Nouvelle Aquitaine Region. This work of the Interdisciplinary Thematic Institute QMat, as part of the ITI 2021 2028 program of the University of Strasbourg, CNRS and Inserm, was supported by IdEx Unistra (ANR 10 IDEX 0002), and by SFRI STRAT’US project (ANR 20 SFRI 0012) and EUR QMat ANR-18-EUR-0016 under the framework of the French Investments for the Future Program. The Institut Universitaire de France (IUF) for financial support., ANR-17-CE09-0010,HEROES,Nanomatériaux hybrides pour une commutation photo-thermique contrôlée(2017), ANR-19-CE09-0028,MIXES,Hétérostructures de van der Waals à dimensions mixtes pour l'électronique et la spintronique(2019), ANR-10-IDEX-0002,UNISTRA,Par-delà les frontières, l'Université de Strasbourg(2010), ANR-20-SFRI-0012,STRAT'US,Façonner les talents en formation et en recherche à l'Université de Strasbourg(2020), Université de Strasbourg (UNISTRA)-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)-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)-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), Toulin, Stéphane, Nanomatériaux hybrides pour une commutation photo-thermique contrôlée - - HEROES2017 - ANR-17-CE09-0010 - AAPG2017 - VALID, Hétérostructures de van der Waals à dimensions mixtes pour l'électronique et la spintronique - - MIXES2019 - ANR-19-CE09-0028 - AAPG2019 - VALID, Initiative d'excellence - Par-delà les frontières, l'Université de Strasbourg - - UNISTRA2010 - ANR-10-IDEX-0002 - IDEX - VALID, and Façonner les talents en formation et en recherche à l'Université de Strasbourg - - STRAT'US2020 - ANR-20-SFRI-0012 - SFRI - VALID

Subjects
Materials science, Spin states, Spin transition, Nanoparticle, 02 engineering and technology, Conductivity, 010402 general chemistry, 01 natural sciences, law.invention, Spin crossover, law, Metastability, Molecule, General Materials Science, Electrical and Electronic Engineering, [CHIM.MATE] Chemical Sciences/Material chemistry, business.industry, Graphene, Process Chemistry and Technology, [CHIM.MATE]Chemical Sciences/Material chemistry, 021001 nanoscience & nanotechnology, 0104 chemical sciences, Mechanics of Materials, Optoelectronics, 0210 nano-technology, business
Abstract

International audience; Molecular systems can exhibit multi-stimuli switching of their properties, with spin crossover materials having unique magnetic transition triggered by temperature and light, among others. Light-induced room temperature operation is however elusive, as optical changes between metastable spin states require cryogenic temperatures. Furthermore, electrical detection is hampered by the intrinsic low conductivity properties of these materials. We show here how a graphene underlayer reveals the light-induced heating that triggers a spin transition, paving the way for using these molecules for room temperature optoelectronic applications.

Published
2021

4. Photo‐Thermal Switching of Individual Plasmonically Activated Spin Crossover Nanoparticle Imaged by Ultrafast Transmission Electron Microscopy

Author

Ngoc Minh Tran, Yaowei Hu, Cristian Enachescu, Nathalie Daro, Guillaume Chastanet, Marlène Palluel, Matthieu Picher, Stéphane Mornet, Laurentiu Stoleriu, Florian Banhart, Eric Freysz, Institut de Physique et Chimie des Matériaux de Strasbourg (IPCMS), Université de Strasbourg (UNISTRA)-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)-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), Laboratoire Ondes et Matière d'Aquitaine (LOMA), Université de Bordeaux (UB)-Centre National de la Recherche Scientifique (CNRS), Institut de Chimie de la Matière Condensée de Bordeaux (ICMCB), Université de Bordeaux (UB)-Institut Polytechnique de Bordeaux-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Alexandru Ioan Cuza University of Iași [Romania], CNRS, University of Bordeaux, Nouvelle Aquitaine Region and the ANR program (HEROES ANR-17-CE09-0010-01) are acknowledged for fundings. Funding by the EQUIPEX program of the Agence Nationale de Recherche, contract ANR-11-EQPX-0041., ANR-17-CE09-0010,HEROES,Nanomatériaux hybrides pour une commutation photo-thermique contrôlée(2017), ANR-11-EQPX-0041,UTEM,Microscopie électronique ultrarapide en transmission(2011), Université de Strasbourg (UNISTRA)-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)-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)-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), Freysz, Eric, Nanomatériaux hybrides pour une commutation photo-thermique contrôlée - - HEROES2017 - ANR-17-CE09-0010 - AAPG2017 - VALID, and Microscopie électronique ultrarapide en transmission - - UTEM2011 - ANR-11-EQPX-0041 - EQPX - VALID

Subjects
Materials science, Nanoparticle, single nanoparticle detection, ultrafast electron microscopy, timeresolved spectroscopy, 02 engineering and technology, 010402 general chemistry, 01 natural sciences, law.invention, spin crossover, Spin crossover, law, General Materials Science, [CHIM.COOR]Chemical Sciences/Coordination chemistry, [PHYS.COND]Physics [physics]/Condensed Matter [cond-mat], Nanoscopic scale, Plasmon, [CHIM.MATE] Chemical Sciences/Material chemistry, business.industry, Mechanical Engineering, [CHIM.MATE]Chemical Sciences/Material chemistry, [CHIM.COOR] Chemical Sciences/Coordination chemistry, 021001 nanoscience & nanotechnology, Laser, 0104 chemical sciences, Characterization (materials science), nanohybrids, Mechanics of Materials, Optoelectronics, Nanorod, sense organs, Time-resolved spectroscopy, 0210 nano-technology, business, [PHYS.COND] Physics [physics]/Condensed Matter [cond-mat]
Abstract

International audience; Spin Crossover (SCO) is a promising switching phenomenon when implemented in electronic devices as molecules, thin films or nanoparticles. Among the properties modulated along this phenomenon, optically induced mechanical changes are of tremendous importance as they can work as fast light-induced mechanical switches or allow to investigate and control microstructural strains and fatigability. The development of characterization techniques probing 2 nanoscopic behaviour with high spatio-temporal resolution allows to trigger and visualize such mechanical changes of individual nanoscopic objects. Here we use Ultrafast Transmission Electron Microscopy (UTEM) to precisely probe the length changes of individual switchable nanoparticles induced thermally by nanosecond laser pulses. This allows us to reveal the mechanisms of spin switching, leading to the macroscopic expansion of SCO materials. This study was conducted on individual pure SCO nanoparticles and SCO nanoparticles encapsulating gold nanorods that serve for plasmonic heating under laser pulses. Length changes are compared with time-resolved optical measurements performed on an assembly of these particles.

Published
2021

5. Time-Resolved Study of the Photoswitching of Gold Nanorods Coated with a Spin-Crossover Compound Shell

Author

Ngoc Minh Tran, Marlène Palluel, Guillaume Chastanet, Eric Freysz, Nathalie Daro, Laboratoire Ondes et Matière d'Aquitaine (LOMA), Université de Bordeaux (UB)-Centre National de la Recherche Scientifique (CNRS), Institut de Chimie de la Matière Condensée de Bordeaux (ICMCB), Université de Bordeaux (UB)-Institut Polytechnique de Bordeaux-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), CNRS, University of Bordeaux, Nouvelle Aquitaine Region, and the ANR program (HEROES ANR-17-CE09-0010-01) are acknowledged for the fundings., and ANR-17-CE09-0010,HEROES,Nanomatériaux hybrides pour une commutation photo-thermique contrôlée(2017)

Subjects
Materials science, Shell (structure), 02 engineering and technology, [CHIM.MATE]Chemical Sciences/Material chemistry, 010402 general chemistry, 021001 nanoscience & nanotechnology, 01 natural sciences, Molecular physics, 0104 chemical sciences, Surfaces, Coatings and Films, Electronic, Optical and Magnetic Materials, General Energy, Spin crossover, Nanorod, [PHYS.PHYS.PHYS-CHEM-PH]Physics [physics]/Physics [physics]/Chemical Physics [physics.chem-ph], Physical and Theoretical Chemistry, 0210 nano-technology
Abstract

International audience; We investigate the spin-state photoswitching process in Au@SCO nanohybrids made of gold nanorods coated by a spin crossover (SCO) shell of polymeric triazole based Fe(II) complexes of [Fe(Htrz) 2 trz] (BF 4). Our research is performed exciting our samples with near-infrared quasi-continuous wave or nanosecond pulse, tunable from visible to near-infrared range. Time-resolved experiments ranging from millisecond down to nanosecond timescales reveal the dynamics during the spin-state transition. Upon excitation, the thermal photoswitching of the sample happens within hundreds of milliseconds for quasi-continuous wave excitation. It happens within tens of nanoseconds for a nanosecond pulse. Compared to the SCO [Fe(Htrz) 2 trz] (BF 4) nanoparticles powder, the peak power of quasi-continuous wave or fluence of the nanosecond laser required to induce the spin state transition in the nanohybrid is reduced. A

Published
2021

6. The Interplay between Surface Plasmon Resonance and Switching Properties in Gold@Spin Crossover Nanocomposites

Author

Ngoc Minh Tran, Guillaume Chastanet, Marlène Palluel, Sonia Buffière, Stéphane Mornet, Nathalie Daro, and Eric Freysz

Subjects
Plasmonic nanoparticles, Nanocomposite, Nanostructure, Materials science, business.industry, Physics::Optics, 02 engineering and technology, Photothermal therapy, 010402 general chemistry, 021001 nanoscience & nanotechnology, Condensed Matter Physics, 01 natural sciences, 0104 chemical sciences, Electronic, Optical and Magnetic Materials, Biomaterials, Spin crossover, Colloidal gold, Electrochemistry, Astrophysics::Solar and Stellar Astrophysics, Optoelectronics, Nanorod, Surface plasmon resonance, 0210 nano-technology, business
Abstract

Rod-like gold nanoparticles are directly embedded in a 1D-polymeric spin crossover (SCO) material leading to singular Au@SCO nanohybrid architectures. The resulting architectures are designed to promote a synergetic effect between ultrafast spin-state photoswitching and photothermal properties of plasmonic nanoparticles. This synergy is evidenced by the strong modulation of the surface plasmon resonance of the gold nanorods through the spin-state switching of the SCO component and also the strong enhancement of the photoswitching efficiency compared to pure SCO particles. This remarkable synergy results from the large modulation of the dielectric properties of the SCO polymer upon its thermal switching and the enhancement of the heating of these hybrid nanostructures upon excitation of the surface plasmon resonance of the gold nanorods.

Published
2020

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