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1. Graphene films for corrosion protection of gold coated cuprous substrates in view of an application to electrical contacts

Author

Alexandre Jaffré, Sophie Noël, Laurent Baraton, Fanny Hauquier, Pascal Viel, David Alamarguy, Serge Palacin, CE - Equipe Contacts Electriques, Laboratoire de génie électrique de Paris (LGEP), Université Paris-Sud - Paris 11 (UP11)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Ecole Supérieure d'Electricité - SUPELEC (FRANCE)-Centre National de la Recherche Scientifique (CNRS)-Université Paris-Sud - Paris 11 (UP11)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Ecole Supérieure d'Electricité - SUPELEC (FRANCE)-Centre National de la Recherche Scientifique (CNRS), and Université Paris-Sud - Paris 11 (UP11)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Ecole Supérieure d'Electricité - SUPELEC (FRANCE)-Centre National de la Recherche Scientifique (CNRS)

Subjects
Electron mobility, Materials science, Graphene, Metallurgy, Contact resistance, 02 engineering and technology, Chemical vapor deposition, 010402 general chemistry, 021001 nanoscience & nanotechnology, 01 natural sciences, Electrical contacts, 0104 chemical sciences, Corrosion, law.invention, law, Composite material, 0210 nano-technology, Graphene nanoribbons, Graphene oxide paper
Abstract

International audience; Corrosion of gold coated electrical contacts remains a problem often avoided by keeping the final gold coating thicknesses over 1 μm. Graphene has recently been shown to be an outstanding material: among its astonishing properties are the theoretical carrier mobility at room temperature (200 000 cm2/V-1s-1) and the Young modulus (1.5 TPa). Graphene is a one-atom thick two-dimensional carbon crystal and has been first produced by mechanical exfoliation to obtain high purity defect free sheets. Chemical vapour deposition (CVD) is another method producing larger areas of graphene. Much work has been dedicated to graphene oxide (GO) deposition and reduction processes for applications ranging from electronics to sensors. In this work we describe briefly how a method of liquid exfoliation and spray deposition can be used to produce nanometric films of graphene flakes which can be more or less uniform and continuous according to the tuning of the process. Films were sprayed in different conditions on various substrates: laboratory substrates such as evaporated gold on glass, Si wafers and metallic coupons. The coupons under study were cut from cuprous alloy strips with a 2μm Ni underlayer and a 0.8 μm Au layer. The coupons were coated with graphene films; they were then submitted to a four gas corrosion environmental test of the GR-1217-CORE Nov. 1995 type. A significant protection effect was observed for the sprayed graphene films. The deposition method by means of a spraying device was difficult to characterise but Raman spectroscopy and SEM images of the sprayed films showed evidence of the film formation. Contact resistance measurements and friction tests in a ball plane configuration were performed; low values of resistance and very low friction coefficients were measured. These first results show the very strong potential of graphene films deposited by a spraying method for electrical contacts applications and particularly for corrosion protection.

Published
2012
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2. Study of Graphene Growth Mechanism on Nickel Thin Films

Author

Zhanbing He, Costel Sorin Cojocaru, Young Hee Lee, Chang-Seok Lee, Didier Pribat, Laurent Baraton, and Jean-Luc Maurice

Subjects
Materials science, Graphene, Graphene foam, chemistry.chemical_element, Chemical vapor deposition, law.invention, Nickel, Chemical engineering, chemistry, law, Thin film, Dissolution, Graphene nanoribbons, Graphene oxide paper
Abstract

Since chemical vapor deposition of carbon-containing precursors onto transition metals tends to develop as the preferred growth process for the mass production of graphene films, the deep understanding of its mechanism becomes mandatory. In the case of nickel, which represents an economically viable catalytic substrate, the solubility of carbon is significant enough so that the growth mechanism proceeds in at least two steps: the dissolution of carbon in the metal followed by the precipitation of graphene at the surface. In this work, we use ion implantation to dissolve calibrated amounts of carbon in nickel thin films and grow graphene films by annealing. Observations of those graphene films using transmission electron microscopy , directly on the growth substrate as well as transfered on TEM grids, allowed us to precisely study the mechanisms that lead to their formation.

Published
2012
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3. Synthesis of few-layered graphene by ion implantation of carbon in nickel thin films

Author

Young Hee Lee, Zhanbing He, Anne-Françoise Gourgues-Lorenzon, Costel Sorin Cojocaru, Chang-Seok Lee, Didier Pribat, Jean-Luc Maurice, Laurent Baraton, Laboratoire de physique des interfaces et des couches minces [Palaiseau] (LPICM), École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Centre des Matériaux (MAT), MINES ParisTech - École nationale supérieure des mines de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS), BK21, Physics Division, Department of Energy Science, Sungkyunkwan University [Suwon] (SKKU), and C'Nano Île de France 'METEO', WCU program of the NRF of Korea, funded by MEST (R31-2008-000-10029-0).

Subjects
Materials science, HRTEM, Annealing (metallurgy), Nucleation, chemistry.chemical_element, Bioengineering, Nanotechnology, 02 engineering and technology, nickel catalyst, 01 natural sciences, law.invention, law, 0103 physical sciences, General Materials Science, Electrical and Electronic Engineering, Thin film, [SPI.NANO]Engineering Sciences [physics]/Micro and nanotechnologies/Microelectronics, 010302 applied physics, Graphene, Mechanical Engineering, graphene, General Chemistry, 021001 nanoscience & nanotechnology, carbon ion implantation, Nickel, Carbon film, Ion implantation, chemistry, Chemical engineering, Mechanics of Materials, Raman spectroscopy, [PHYS.COND.CM-MS]Physics [physics]/Condensed Matter [cond-mat]/Materials Science [cond-mat.mtrl-sci], 0210 nano-technology, Graphene nanoribbons
Abstract

International audience; The synthesis of few-layered graphene is performed by ion implantation of carbon species in thin nickel films, followed by high temperature annealing and quenching. Although ion implantation enables a precise control of the carbon content and of the uniformity of the in-plane carbon concentration in the Ni films before annealing, we observe thickness non-uniformities in the synthesized graphene layers after high temperature annealing. These non-uniformities are probably induced by the heterogeneous distribution/topography of the graphene nucleation sites on the Ni surface. Taken altogether, our results indicate that the number of graphene layers on top of Ni films is controlled by the nucleation process on the Ni surface rather than by the carbon content in the Ni film.

Published
2011
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4. On the mechanisms of precipitation of graphene on nickel thin films

Author

Laurent Baraton, Zhanbing He, Didier Pribat, Young Hee Lee, Marc Châtelet, Costel Sorin Cojocaru, Jean-Luc Maurice, Chang-Seok Lee, Laboratoire de physique des interfaces et des couches minces [Palaiseau] (LPICM), École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Department of Energy Science, Sungkyunkwan University [Suwon] (SKKU), and C'Nano Île de France

Subjects
Materials science, Annealing (metallurgy), General Physics and Astronomy, chemistry.chemical_element, FOS: Physical sciences, 02 engineering and technology, 010402 general chemistry, 01 natural sciences, law.invention, Metal, Transition metal, law, Solubility, Thin film, Dissolution, Condensed Matter - Materials Science, Graphene, Graphene films, Materials Science (cond-mat.mtrl-sci), Methods of micro- and nanofabrication and processing: catalytic methods, 021001 nanoscience & nanotechnology, 0104 chemical sciences, Nickel, PACS: 68.65.Pq, 81.05.ue, 81.16.Hc, chemistry, Chemical engineering, Materials science: graphene, visual_art, visual_art.visual_art_medium, [PHYS.COND.CM-MS]Physics [physics]/Condensed Matter [cond-mat]/Materials Science [cond-mat.mtrl-sci], 0210 nano-technology
Abstract

International audience; Growth on transition metal substrates is becoming a method of choice to prepare large-area graphene foils. In the case of nickel, where carbon has a significant solubility, such a growth process includes at least two elementary steps: (1) carbon dissolution into the metal, and (2) graphene precipitation at the surface. Here, we dissolve calibrated amounts of carbon in nickel films, using carbon ion implantation, and annealing at 725 °C or 900 °C. We then use transmission electron microscopy to analyse the precipitation process in detail: the latter appears to imply carbon diffusion over large distances and at least two distinct microscopic mechanisms.

Published
2011
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5. Dual graphene films growth process based on plasma-assisted chemical vapor deposition

Author

Zhanbing He, Jean-Luc Maurice, Marc Chaigneau, Costel Sorin Cojocaru, Laurent Baraton, Chang-Seok Lee, and Didier Pribat

Subjects
Materials science, Graphene, Graphene foam, chemistry.chemical_element, Chemical vapor deposition, law.invention, Nickel, Chemical engineering, chemistry, law, Plasma-enhanced chemical vapor deposition, Thin film, Graphene nanoribbons, Graphene oxide paper
Abstract

Graphene has been given great attention to overcome current physical limits in electronic devices and its synthesis routes are developing rapidly. However, graphene film manufacturing is still hindered by either low throughput or low material quality. Here, we present a low temperature PE-CVD assisted graphene growth process on nickel thin films deposited on silicon oxide. Furthermore, our process leads to the formation of two separated graphene films, one at the nickel surface and the other at the Ni/SiO2 interface. A mixture of methane and hydrogen was employed as carbon precursor and activated by DC plasma. We found that the number of graphene layers on top of nickel can be controlled by carbon exposure time, from 1 to around 10 layers. Further annealing process of samples allowed us to achieve improved graphene films by the dissolution and segregation-crystallization process.

Published
2010
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6. Orientation of Mn12 molecular nanomagnets in self-assembled monolayers

Author

Laure Catala, C. David, Vincent Huc, Laurent Baraton, Talal Mallah, Serge Palacin, Benoit Fleury, Pascale Jégou, Institut de Chimie Moléculaire et des Matériaux d'Orsay (ICMMO), Université Paris-Sud - Paris 11 (UP11)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Chimie des Surfaces et Interfaces (LCSI), Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Laboratoire de photonique et de nanostructures (LPN), Centre National de la Recherche Scientifique (CNRS), and Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC)

Subjects
Materials science, Coordination sphere, Molecular nanomagnets, Self-assembled monolayer, 02 engineering and technology, General Chemistry, [CHIM.MATE]Chemical Sciences/Material chemistry, Orientation (graph theory), 010402 general chemistry, 021001 nanoscience & nanotechnology, Condensed Matter Physics, Grafting, 01 natural sciences, 0104 chemical sciences, chemistry.chemical_compound, Crystallography, chemistry, General Materials Science, Carboxylate, 0210 nano-technology, Selectivity
Abstract

International audience; The oriented grafting of the Mn12-carboxylate molecular nanomagnets has been achieved on semi-conducting flat Si(100) functionalized surfaces due to the bonding selectivity between axial and equatorial carboxylate groups present in the coordination sphere of the Mn12 complexes.

Published
2009
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7. Growth of graphene films by plasma enhanced chemical vapour deposition

Author

Young Hee Lee, Vincent Huc, Laurent Gangloff, Costel Sorin Cojocaru, Didier Pribat, Laurent Baraton, Stéphane Xavier, and Pierre Legagneux

Subjects
Materials science, Plasma-enhanced chemical vapor deposition, Graphene, law, Graphene foam, Nanotechnology, Wafer, Thin film, Layer (electronics), Graphene nanoribbons, Graphene oxide paper, law.invention
Abstract

Since it was isolated in 2004, graphene, the first known 2D crystal, is the object of a growing interest, due to the range of its possible applications as well as its intrinsic properties. From large scale electronics and photovoltaics to spintronics and fundamental quantum phenomena, graphene films have attracted a large community of researchers. But bringing graphene to industrial applications will require a reliable, low cost and easily scalable synthesis process. In this paper we present a new growth process based on plasma enhanced chemical vapor deposition. Furthermore, we show that, when the substrate is an oxidized silicon wafer covered by a nickel thin film, graphene is formed not only on top of the nickel film, but also at the interface with the supporting SiO 2 layer. The films grown using this method were characterized using classical methods (Raman spectroscopy, AFM, SEM) and their conductivity is found to be close to those reported by others.

Published
2009
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8. Covalent grafting onto self-adhesive surfaces based on aryldiazonium salt seed layers

Author

Vincent Huc, Alessandro Benedetto, Alan Le Goff, Pascal Viel, David Alamarguy, Arianna Filoramo, Sophie Noël, Laurent Baraton, Xuan Tuan Le, Jennifer Bar, Serge Palacin, Laboratoire de Chimie des Surfaces et Interfaces (LCSI), Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Institut de Chimie Moléculaire et des Matériaux d'Orsay (ICMMO), Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC), Laboratoire de génie électrique de Paris (LGEP), Université Paris-Sud - Paris 11 (UP11)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Ecole Supérieure d'Electricité - SUPELEC (FRANCE)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de physique des interfaces et des couches minces [Palaiseau] (LPICM), École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), and Université Paris-Sud - Paris 11 (UP11)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)

Subjects
chemistry.chemical_classification, Aqueous solution, Materials science, Graphene, Nanoparticle, 02 engineering and technology, General Chemistry, Polymer, Carbon nanotube, [CHIM.MATE]Chemical Sciences/Material chemistry, 010402 general chemistry, 021001 nanoscience & nanotechnology, Grafting, 01 natural sciences, 0104 chemical sciences, law.invention, Surface coating, chemistry, Highly oriented pyrolytic graphite, Chemical engineering, law, Materials Chemistry, Organic chemistry, 0210 nano-technology
Abstract

International audience; The chemistry of aryldiazonium salts has been thoroughly used in recent years to graft in a very simple and robust way ultrathin polyphenylene-like films on a broad range of surfaces. We show here that the same chemistry can be used to obtain self-adhesive surfaces. This target was reached in a simple way by coating various surfaces with chemisorbed organic films containing active aryldiazonium salts. These self-adhesive surfaces are then put into contact with various species (molecules, polymers, nanoparticles, nanotubes, graphene flakes, etc.) that react either spontaneously or under activation with the immobilized aryldiazonium salts. Our self-adhesive surfaces were synthesized following a simple aqueous two-step protocol based on p-phenylenediamine diazotisation. The first diazotisation step results in the robust grafting of thin polyaminophenylene (PAP) layers onto the surface. The second diazotisation step changed the grafted PAP film into a poly-aryldiazonium polymer (PDP) film. The covalent grafting between those self-adhesive surfaces and the target species was achieved by direct contact or by immersion of the self-adhesive surfaces in solution. We present in this preliminary work the grafting of multi-wall carbon nanotubes (MWCNTs), flakes of highly oriented pyrolytic graphite (HOPG), various organic compounds and copper nanoparticles. We also tested these immobilized aryldiazonium salts as electropolymerization initiators for the grafting-to process.

Published
2008
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9. Grafting a monolayer of superparamagnetic cyanide-bridged coordination nanoparticles on Si(100)

Author

Florence Volatron, Guillaume Rogez, C. David, Serge Palacin, Vincent Huc, Eric Rivière, Benoit Fleury, Laure Catala, Talal Mallah, Daniela Brinzei, Frédéric Miserque, Laurent Baraton, Institut de Chimie Moléculaire et des Matériaux d'Orsay (ICMMO), Université Paris-Sud - Paris 11 (UP11)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de photonique et de nanostructures (LPN), Centre National de la Recherche Scientifique (CNRS), Laboratoire d'Etude de la Corrosion Aqueuse (LECA), Service de la Corrosion et du Comportement des Matériaux dans leur Environnement (SCCME), Département de Physico-Chimie (DPC), CEA-Direction des Energies (ex-Direction de l'Energie Nucléaire) (CEA-DES (ex-DEN)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-CEA-Direction des Energies (ex-Direction de l'Energie Nucléaire) (CEA-DES (ex-DEN)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Département de Physico-Chimie (DPC), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, Institut de Physique et Chimie des Matériaux de Strasbourg (IPCMS), 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), Laboratoire de Chimie des Surfaces et Interfaces (LCSI), Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC), 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, and 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)

Subjects
Chemistry, Cyanide, Substrate (chemistry), Nanoparticle, Nanotechnology, 02 engineering and technology, [CHIM.MATE]Chemical Sciences/Material chemistry, 010402 general chemistry, 021001 nanoscience & nanotechnology, Grafting, equipment and supplies, 01 natural sciences, 0104 chemical sciences, Inorganic Chemistry, chemistry.chemical_compound, surgical procedures, operative, Chemical engineering, Monolayer, Physical and Theoretical Chemistry, 0210 nano-technology, human activities, Superparamagnetism
Abstract

International audience; The grafting of a monolayer of 6 nm superparamagnetic cyanide-bridged CsNiCr nanoparticles was achieved on a Ni(II)-functionalized Si(100) substrate; magnetic studies reveals that the grafted nanoparticles are nearly magnetically isolated within the monolayer

Published
2008
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10. Non-faradic carbon nanotube-based supercapacitors: state of the art

Author

Colin Delfaure, Louis Gorintin, Christophe Galindo, Laurent Baraton, Pierre Legagneux, Didier Pribat, J.-P. Schnell, and Paolo Bondavalli

Subjects
Supercapacitor, Fabrication, Materials science, Nanotechnology, Carbon nanotube, Condensed Matter Physics, Electronic, Optical and Magnetic Materials, law.invention, Capacitor, Art analysis, law, Electrode, medicine, Electronics, Instrumentation, Activated carbon, medicine.drug
Abstract

This contribution deals with the state of the art of studies concerning the fabrication of electric double-layer capacitors (EDLCs) also called super- or ultracapacitors and obtained using carbon nanotubes (CNTs) without exploiting Faradic reactions. From the first work published in 1997, EDLCs fabricated using carbon nanotubes as constitutive material for electrodes showed very interesting characteristics. It appeared that they could potentially outperform traditional technologies based on activated carbon. Different methods to fabricate the CNT-based electrodes have been proposed in order to improve the performances (mainly energy densities and power densities), for example filtration, direct growth on metal collector or deposition using an air-brush technique. In this contribution we will introduce the main works in the field. Finally, we will point out an emerging interest for supercapacitors fabricated on flexible substrates, exploiting the outstanding mechanical performances of CNTs, for new kinds of applications such as portable electronics.

Published
2012
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11. A new approach to grafting a monolayer of oriented Mn12 nanomagnets on silicon

Author

Laurent Baraton, Laure Catala, Serge Palacin, Wang Zhao Zhong, Benoit Fleury, C. David, Vincent Huc, Pierre-Antoine Albouy, Pascale Jégou, Talal Mallah, Institut de Chimie Moléculaire et des Matériaux d'Orsay (ICMMO), Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC), Laboratoire de photonique et de nanostructures (LPN), Centre National de la Recherche Scientifique (CNRS), Laboratoire de Chimie des Surfaces et Interfaces (LCSI), Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Laboratoire de Physique des Solides (LPS), Centre National de la Recherche Scientifique (CNRS)-Université Paris-Sud - Paris 11 (UP11), Université Paris-Sud - Paris 11 (UP11)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), and Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS)

Subjects
Materials science, Silicon, Metals and Alloys, chemistry.chemical_element, Nanotechnology, [CHIM.MATE]Chemical Sciences/Material chemistry, 02 engineering and technology, General Chemistry, 010402 general chemistry, 021001 nanoscience & nanotechnology, Grafting, 01 natural sciences, Nanomagnet, Catalysis, 0104 chemical sciences, Surfaces, Coatings and Films, Electronic, Optical and Magnetic Materials, chemistry, Monolayer, Materials Chemistry, Ceramics and Composites, Wafer, 0210 nano-technology
Abstract

International audience; The functionalisation of a Si(100) silicon wafer allows for the oriented grafting of a monolayer of Mn12 nanomagnets using a two-step procedure

Published
2005
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12. Orientation of Mn12 molecular nanomagnets in self-assembled monolayers.

Author

Benoit Fleury, Vincent Huc, Laure Catala, Pascale Jegou, Laurent Baraton, Christophe David, Serge Palacin, and Talal Mallah

Subjects
METAL complexes, MANGANESE compounds, MOLECULAR self-assembly, MONOMOLECULAR films, CARBOXYLIC acids, SEMICONDUCTORS, SILICON, NANOSTRUCTURED materials
Abstract

The oriented grafting of the Mn12-carboxylate molecular nanomagnets has been achieved on semi-conducting flat Si(100) functionalized surfaces due to the bonding selectivity between axial and equatorial carboxylate groups present in the coordination sphere of the Mn12complexes. [ABSTRACT FROM AUTHOR]

Published
2009
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13. Covalent grafting onto self-adhesive surfaces based on aryldiazonium salt seed layers.

Author

Pascal Viel, Xuan Tuan Le, Vincent Huc, Jennifer Bar, Alessandro Benedetto, Alan Le Goff, Arianna Filoramo, David Alamarguy, Sophie Noël, Laurent Baraton, and Serge Palacin

Abstract

The chemistry of aryldiazonium salts has been thoroughly used in recent years to graft in a very simple and robust way ultrathin polyphenylene-like films on a broad range of surfaces. We show here that the same chemistry can be used to obtain “self-adhesive surfaces”. This target was reached in a simple way by coating various surfaces with chemisorbed organic films containing active aryldiazonium salts. These “self-adhesive surfaces” are then put into contact with various species (molecules, polymers, nanoparticles, nanotubes, graphene flakes, etc.) that react either spontaneously or under activation with the immobilized aryldiazonium salts. Our self-adhesive surfaces were synthesized following a simple aqueous two-step protocol based on p-phenylenediamine diazotisation. The first diazotisation step results in the robust grafting of thin polyaminophenylene (PAP) layers onto the surface. The second diazotisation step changed the grafted PAP film into a “poly-aryldiazonium polymer” (PDP) film. The covalent grafting between those self-adhesive surfaces and the target species was achieved by direct contact or by immersion of the self-adhesive surfaces in solution. We present in this preliminary work the grafting of multi-wall carbon nanotubes (MWCNTs), flakes of highly oriented pyrolytic graphite (HOPG), various organic compounds and copper nanoparticles. We also tested these immobilized aryldiazonium salts as electropolymerization initiators for the grafting-to process. [ABSTRACT FROM AUTHOR]

Published
2008
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15. Deliverable 1.2 ROADMAP TECHNICAL APPENDIX. Part 4 - Sustainable Carbon Capture and SUNRISE Key Enablers

Author

Carina Faber, Yagut Allahverdiyeva-Rinne, Vincent Artero, Laurent Baraton, Andrea Barbieri, Hervé Bercegol, Maximilian Fleischer, Han Huynhthi, Joanna Kargul, Hélène Lepaumier, Laura López, Ann Magnuson, Arne Roth, Nicola Armaroli, Eva-Mari Aro, Stefan Baumann, Artur Braun, Stefano Cucurachi, James Durrant, Huub de Groot, Leif Hammarström, Juliette Jouhet, Henrik Koch, Jan Mertens, Marcel Meeus, Robert Potter, Martin Roeb, Anita Schneider, and Antonin Vlcek

Subjects
roadmap, technical appendix, carbon capture, 13. Climate action, 7. Clean energy
Abstract

Technological Roadmap Technical Appendix Part 4 - Sustainable Carbon Capture and SUNRISE Key Enablers

16. Deliverable 1.2. ROADMAP TECHNICAL APPENDIX Part 2 - Sustainable Ammonia Production

Author

Carina Faber, Yagut Allahverdiyeva-Rinne, Vincent Artero, Laurent Baraton, Andrea Barbieri, Hervé Bercegol, Maximilian Fleischer, Han Huynhthi, Joanna Kargul, Hélène Lepaumier, Laura López, Ann Magnuson, Arne Roth, Nicola Armaroli, Eva-Mari Aro, Stefan Baumann, Artur Braun, Stefano Cucurachi, James Durrant, Huub de Groot, Leif Hammarström, Juliette Jouhet, Henrik Koch, Jan Mertens, Marcel Meeus, Robert Potter, Martin Roeb, Anita Schneider, and Antonin Vlcek

Subjects
roadmap, technical appendix, ammonia, 12. Responsible consumption
Abstract

Technological Roadmap Technical Appendix Part 2 - Sustainable Ammonia Production

17. Deliverable 1.2. SUNRISE Technological Roadmap

Author

Carina Faber, Yagut Allahverdiyeva-Rinne, Vincent Artero, Laurent Baraton, Andrea Barbieri, Hervé Bercegol, Maximilian Fleischer, Han Huynhthi, Joanna Kargul, Hélène Lepaumier, Laura Lopez, Ann Magnuson, Arne Roth, Nicola Armaroli, Eva-Mari Aro, Stefan Baumann, Artur Braun, Stefano Cucurachi, James Durrant, Huub de Groot, Leif Hammarström, Juliette Jouhet, Henrik Koch, Jan Mertens, Marcel Meeus, Robert Potter, Martin Roeb, Anita Schneider, and Antonin Vlcek

Subjects
13. Climate action, 11. Sustainability, 7. Clean energy, roadmap, carbon-neutral society, fossil-free fuels, climate stability, renewable energy, 12. Responsible consumption
Abstract

Roadmap document for theSUNRISE action, itaims at promoting a large-scale research initiative toprovide short and long-term solutionsto enable the transition to a circular economypowered by sunlightthrough the sustainable production of fuels and chemicals. SUNRISE’s main objective is to facilitate a carbon-neutral society by using abundantly available molecules – carbon dioxide, water and nitrogen – to replace fossil-based raw materials for the production of a broad range of chemicals and fuels. This way, our initiative targets a sustainable CO2 cycle, where the concentration in the atmosphere is decreased and then maintained at a level compatible with climate stability, committing to the sustainable use of natural resources and land.

18. Deliverable 1.2. ROADMAP TECHNICAL APPENDIX. Part 4 - Sustainable Carbon Capture and SUNRISE Key Enablers

Author

Carina Faber, Yagut Allahverdiyeva-Rinne, Vincent Artero (CEA, Laurent Baraton, Andrea Barbieri, Hervé Bercegol, Maximilian Fleischer, Han Huynhthi, Joanna Kargul, Hélène Lepaumier, Laura López, Ann Magnuson, Arne Roth, Nicola Armaroli (CNR), Eva-Mari Aro, Stefan Baumann (), Artur Braun, Stefano Cucurachi, James Durrant, Huub de Groot, Leif Hammarström, Juliette Jouhet, Henrik Koch, Jan Mertens, Marcel Meeus, Robert Potter, Martin Roeb, Anita Schneider, and Antonin Vlcek

Subjects
roadmap, technical appendix, carbon capture, 13. Climate action
Abstract

Technological Roadmap Technical Appendix Part 4 - Sustainable Carbon Capture and SUNRISE Key Enablers

19. Deliverable 1.2. ROADMAP TECHNICAL APPENDIX. Part 1 - Sustainable Hydrogen Production

Author

Carina Faber, Yagut Allahverdiyeva-Rinne, Vincent Artero, Laurent Baraton, Andrea Barbieri, Hervé Bercegol, Maximilian Fleischer, Han Huynhthi, Joanna Kargul, Hélène Lepaumier, Laura Lopez, Ann Magnuson, Arne Roth, Nicola Armaroli, Eva-Mari Aro, Stefan Baumann, Artur Braun, Stefano Cucurachi, James Durrant, Huub de Groot, Leif Hammarström, Juliette Jouhet, Henrik Koch, Jan Mertens, Marcel Meeus, Robert Potter, Martin Roeb, Anita Schneider, and Antonin Vlcek

Subjects
13. Climate action, roadmap, technical appendix, 7. Clean energy, 12. Responsible consumption
Abstract

Technological Roadmap Technical Appendix Part 1 - Sustainable Hydrogen Production

20. Deliverable 1.2. ROADMPAP TECHNICAL APPENDIX. Part 3 - Sustainable Carbon-based Chemicals and (Jet)fuels

Author

Carina Faber, Yagut Allahverdiyeva-Rinne, Vincent Artero, Laurent Baraton, Andrea Barbieri, Hervé Bercegol, Maximilian Fleischer, Han Huynhthi, Joanna Kargul, Hélène Lepaumier, Laura López, Ann Magnuson, Arne Roth, Nicola Armaroli, Eva-Mari Aro, Stefan Baumann, Artur Braun, Stefano Cucurachi, James Durrant, Huub de Groot, Leif Hammarström, Juliette Jouhet, Henrik Koch, Jan Mertens, Marcel Meeus, Robert Potter, Martin Roeb, Anita Schneider, and Antonin Vlcek

Subjects
roadma, technical appendix, carbon-based chemicals and fuels, 13. Climate action, 12. Responsible consumption
Abstract

Technological Roadmap Technical Appendix Part 3 - Sustainable carbon-based chemicals and (jet)fuels

21. Synthesis of few-layered graphene by ion implantation of carbon in nickel thin films.

Author

Laurent Baraton, Zhanbing He, Chang Seok, Luc Maurice, Costel Sorin, Francoise Gourgues, Young Hee, Lee and, and Didier Pribat

Subjects
*THIN films, *GRAPHENE, *NICKEL, *METAL quenching, *HEAT resistant alloys, *NUCLEATION
Abstract

The synthesis of few-layered graphene is performed by ion implantation of carbon species in thin nickel films, followed by high temperature annealing and quenching. Although ion implantation enables a precise control of the carbon content and of the uniformity of the in-plane carbon concentration in the Ni films before annealing, we observe thickness non-uniformities in the synthesized graphene layers after high temperature annealing. These non-uniformities are probably induced by the heterogeneous distribution/topography of the graphene nucleation sites on the Ni surface. Taken altogether, our results indicate that the number of graphene layers on top of Ni films is controlled by the nucleation process on the Ni surface rather than by the carbon content in the Ni film. [ABSTRACT FROM AUTHOR]

Published
2011
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