A5083281777- Fluorine in Organic Chemistry
- Synthesis and Reactions of Organic Compounds
- Organic Electronics and Photovoltaics
- Conducting polymers and applications
- Inorganic Fluorides and Related Compounds
- Chemical Synthesis and Analysis
- Synthesis and Biological Evaluation
- Optical Network Technologies
- Semiconductor materials and devices
- Molecular Junctions and Nanostructures
- Advanced Photocatalysis Techniques
- Carbon Nanotubes in Composites
- Microplastics and Plastic Pollution
- Antimicrobial agents and applications
- Advanced Battery Materials and Technologies
- Analytical Chemistry and Chromatography
- Thin-Film Transistor Technologies
- Organic Chemistry Cycloaddition Reactions
- Semiconductor materials and interfaces
- Porphyrin and Phthalocyanine Chemistry
- Electronic and Structural Properties of Oxides
- Semiconductor Lasers and Optical Devices
- Inorganic and Organometallic Chemistry
- Chemical Synthesis and Reactions
- Advancements in Battery Materials
Commissariat à l'Énergie Atomique et aux Énergies Alternatives
2013-2024
Centre National de la Recherche Scientifique
1991-2024
CEA Paris-Saclay
2008-2024
Université Paris-Saclay
2014-2024
Service Interdisciplinaire sur les Systèmes Moléculaires et les Matériaux
2022
Nanosciences et Innovation pour les Matériaux, la Biomédecine et l'Énergie
2014-2022
Institut Rayonnement-Matière de Saclay
2008-2015
CEA LITEN
2005-2009
CEA Paris-Saclay - Etablissement de Saclay
2004-2005
École Normale Supérieure - PSL
2003
The development of innovative techniques for the functionalization carbon nanotubes that preserve their exceptional quality, while robustly enriching properties, is a central issue integration in applications. In this work, we describe formation covalent network porphyrins around MWNT surfaces. approach based on adsorption cobalt(II) meso-tetraethynylporphyrins nanotube sidewalls followed by dimerization triple bonds via Hay-coupling; during reaction, acts as template polymeric layer....
A series of poly(3-hexylthiophene)s (P3HTs) and poly(3-butylthiophene)s (P3BTs) with predetermined molecular weights varying polydispersities are prepared using a simplified Grignard metathesis chain-growth polymerization. Techniques were elaborated to prepare extremely high weight P3HT (number-average around 280 000 g mol–1) low polydispersity (< 1.1) without resorting fractionation. Optimization the annealing solar cells based on blends poly(3-alkylthiophene)s (P3ATs) [6,6]-phenyl C61...
Microparticles of polyethylene and polypropylene are largely found in aquatic environments because they the most produced persistent plastic materials. Once biological media, covered by a layer molecules, so-called corona, mostly composed proteins. A yeast protein extract from Saccharomyces cerevisiae was used as system to observe interactions complex media. Proteins, acting surfactants providing hydrophilic surfaces, allow dispersion highly hydrophobic particles water stabilize them. After...
Fabrication at low cost of transparent p-type semiconductors with suitable electronic properties is essential toward the scalability many devices, especially for photovoltaic and photocatalytic applications. In this context, synthesis mesoporous NiO films through inkjet printing a sol–gel ink was investigated first time. Nickel chloride Pluronic F-127, used as nickel oxide precursor pore-forming agent, respectively, were formulated in water/ethanol mixture to prepare jettable Dimatix...
Superconducting qubits have arisen as a leading technology platform for quantum computing, which is on the verge of revolutionizing world's calculation capacities. Nonetheless, fabrication computationally reliable qubit circuits requires increasing coherence lifetimes, are predominantly limited by dissipations two-level system defects present in thin superconducting film and adjacent dielectric regions. In this paper, we demonstrate reduction losses three-dimensional radio frequency niobium...
The change in the morphology of plastic solar cells was studied by means time-resolved energy dispersive x-ray reflectivity (XRR). This unconventional application XRR technique allowed follow up situ morphological evolution an organic photovoltaic device upon working. study consisted three steps: A preliminary set measurements on various samples representing intermediate stages cell construction, which provided accurate data regarding electronic densities different layers; verification...
A heterogeneous catalyst was assembled by stabilization of rhodium nanoparticles on carbon nanotubes.
Direct evidence for reductive and oxidative surface states coexisting in hematite nanostructures is given by combined STXM PEC measurements. The annealing temperature Ti substitution balance the states, driving activity.
Oligomers and regioregular copolymers based on fluorenone subunits are synthesized used in bulk-heterojunction photovoltaic cells. These 2,7-bis(5-[(E)-1,2-bis(3-octylthien-2-yl)ethylene])-fluoren-9-one (TVF), the product of its oxidative polymerization, that is, (poly[(5,5′-(bis-(E)-1,2-bis(3-octylthien-2-yl)ethylene]-alt-(2,7-fluoren-9-one)]) (PTVF), an alternate copolymer fluoren-9-one di-n-alkylbithiophene, namely poly[(5,5′-(3,3′-di-n-octyl-2,2′-bithiophene))-alt-(2,7-fluoren-9-one)]...
The electrode-active layer interface of organic photovoltaic cells, a critical point in the development devices, was studied by energy dispersive x-ray reflectivity (EDXR) technique applied situ. An EDXR-based protocol allowing discrimination between possible mechanisms that produce aging process at established. study detects photoinduced oxidation electrode buried interface, to which fading device performances could be attributed. This conclusion further confirmed results obtained on new...
Abstract The stereo‐electronic control over bisadditions of conjugated polymers to fullerene (C 60 ) is explored in the formation alternating copolymers. chemistry, resulting configuration, and properties poly(3‐hexylthiophene)‐ alt ‐C copolymers prepared by either classic pyrrolidine ring or an atom transfer radical addition are compared. Both routes result controlled additions C . Extensive macromolecular modeling through PM6 methods indicate that there no conjugation between P3HT systems...
We study the influence of locally doped silicon substrates on electroreduction diazonium salts. Our results show that reduction salts occurs at moderate potentials compared to flat band potential semiconducting electrode. The underlying doping directs electrografting, preferentially over areas substrate. High resolution spatially resolved X-ray photoelectron spectroscopy analysis using a new emission microscope (XPEEM) and soft synchrotron radiation yields thickness native oxide micron scale...
Anthraquinone molecules are grafted onto carbon nanotubes in order to avoid their dissolution the Li battery electrolyte.
Plastic particles, particularly micro- and nanoparticles, are emerging pollutants due to the ever-growing amount of plastics produced across a wide variety sectors. When plastic particles enter biological medium, they become surrounded by corona, giving them their identity determining interactions in living environment effects. Here, we studied microstructured with hemoglobin (Hb). Virgin polyethylene microparticles (PEMPs) polypropylene (PPMPs) as well heat- or irradiation-aged (ag-PEMPs...
Thermal condensation of 2-carbomethoxy and 2-cyano-aziridines with perfluorobutene perfluoropropene produces polyfluorinated pyrrolidines. These compounds, treated sodium methoxide, lead to 3,4-fluorinated pyrroles. In the case perfluoropropene, (2 + 3) cycloaddition is not completely regiospecific.
In standard organic solar cells, an electron transporting layer (ETL) is often inserted between the active and cathode in order to achieve good performances. this work, a zinc oxide (ZnO) ETL used with aluminum cathode, yielding functional fresh cells. However, upon storage dark inert atmosphere, S-shape quickly appears J–V curves, leading sharp decline of conversion efficiency. By building cells various sequences, we show that stems from modification ZnO/Al interface. Further experiments...