Author
Jean-Charles Dupin
Other affiliations: École nationale supérieure de chimie et de physique de Bordeaux, Centre national de la recherche scientifique
Bio: Jean-Charles Dupin is an academic researcher from University of Pau and Pays de l'Adour. The author has contributed to research in topics: Nanoparticle & X-ray photoelectron spectroscopy. The author has an hindex of 23, co-authored 48 publications receiving 2865 citations. Previous affiliations of Jean-Charles Dupin include École nationale supérieure de chimie et de physique de Bordeaux & Centre national de la recherche scientifique.
Papers published on a yearly basis
Papers
More filters
TL;DR: In this article, the results of a systematic XPS study, under high controlled conditions, of different basic oxides of transition metals, alkali and alkaline-earth metals are presented; the XPS data of some hydroxides and peroxides are also reported.
Abstract: The results of a systematic XPS study, under high controlled conditions, of different basic oxides of transition metals, alkali and alkaline-earth metals are presented; the XPS data of some hydroxides and peroxides are also reported. Variations of the O 1s binding energies are analysed and one point of interest is the large
binding energy scale obtained for O 1s peaks all associated with a ‘‘2−
’’ formal charge. Through extended
Huckel theory-tight binding (EHT-TB) calculations, attempts are made to rationalize the observed variations.
The results illustrate
the significant
differences
between real
charges on oxygen atoms in transition metal and alkaline-earth oxides.
1,653 citations
TL;DR: In this article, X-ray photoelectron spectroscopy was used to study the evolution of LixCoO2+y thin-films at different stages of their cycle in experimental microbatteries.
224 citations
TL;DR: In this paper, a topochemical oxidative reaction (TOR) under air is converted into a monometallic CoIICoIII-CO3 layered double hydroxide (LDH), and structural and morphological characterizations are performed using powder X-ray diffraction, Fourier-transformed IR spectroscopy, and scanning and transmission electron microscopy.
Abstract: Through a topochemical oxidative reaction (TOR) under air, a β-Co(OH)2 brucite type structure is converted into a monometallic CoIICoIII–CO3 layered double hydroxide (LDH). The structural and morphological characterizations are performed using powder X-ray diffraction, Fourier-transformed IR spectroscopy, and scanning and transmission electron microscopy. The local structure is scrutinized using an extended X-ray absorption fine structure, X-ray absorption near-edge structure, and pair distribution function analysis. The chemical composition of pristine material and its derivatives (electrochemically treated) are identified by thermogravimetry analysis for the bulk and X-ray photoelectron spectroscopy for the surface. The electrochemical behavior is investigated on deposited thin films in aqueous electrolyte (KOH) by cyclic voltammetry and electrochemical impedance spectroscopy, and their capacitive properties are further investigated by Galvanostatic cycling with potential limitation. The charge capacity is found to be as high as 1490 F g−1 for CoIICoIII–CO3 LDH at a current density of 0.5 A g−1. The performances of these materials are described using Ragone plots, which finally allow us to propose them as promising supercapacitor materials. A surface-to-bulk comparison using the above characterization techniques gives insight into the cyclability and reversibility limits of this material.
136 citations
TL;DR: In this article, a di-block copolymer structure with a good affinity to carbon nanotubes (monomer M1), the other being the matrix, is proposed to solve the dispersion, compatibilization, and stabilization of the CNT in the polymer matrix.
102 citations
TL;DR: In this paper, the XPS study of different amorphous oxysulfides thin films MOySz (M=W, Ti, Mo), prepared by radio frequency magnetron sputtering, has been conducted.
95 citations
Cited by
More filters
TL;DR: Biesinger et al. as mentioned in this paper proposed a more consistent and effective approach to curve fitting based on a combination of standard spectra from quality reference samples, a survey of appropriate literature databases and/or a compilation of literature references and specific literature references where fitting procedures are available.
7,498 citations
TL;DR: Department of Materials Science, University of Patras, Greece, Theoretical and Physical Chemistry Institute, National Hellenic Research Foundation, and Dipartimento di Scienze Farmaceutiche, Universita di Trieste, Piazzale Europa 1, 34127 Triesteadays.
Abstract: Department of Materials Science, University of Patras, 26504 Rio Patras, Greece, Theoretical and Physical Chemistry Institute, National Hellenic Research Foundation, 48 Vass. Constantinou Avenue, 116 35 Athens, Greece, Institut de Biologie Moleculaire et Cellulaire, UPR9021 CNRS, Immunologie et Chimie Therapeutiques, 67084 Strasbourg, France, and Dipartimento di Scienze Farmaceutiche, Universita di Trieste, Piazzale Europa 1, 34127 Trieste, Italy
3,886 citations
TL;DR: In this paper, an extended account of the various chemical strategies for grafting polymers onto carbon nanotubes and the manufacturing of carbon-nanotube/polymer nanocomposites is given.
2,766 citations
TL;DR: In this article, the effect of oxidation on the structural integrity of multiwalled carbon nanotubes through acidic (nitric acid and a mixture of sulfuric acid and hydrogen peroxide) and basic (ammonium hydroxide/hydrogen peroxide), agents has been studied.
2,454 citations
TL;DR: This review discusses the synthesis, switching conditions, and use of dynamic materials in which spiropyran has been attached to the surfaces of polymers, biomacromolecules, inorganic nanoparticles, as well as solid surfaces.
Abstract: In the past few years, spiropyran has emerged as the molecule-of-choice for the construction of novel dynamic materials. This unique molecular switch undergoes structural isomerisation in response to a variety of orthogonal stimuli, e.g. light, temperature, metal ions, redox potential, and mechanical stress. Incorporation of this switch onto macromolecular supports or inorganic scaffolds allows for the creation of robust dynamic materials. This review discusses the synthesis, switching conditions, and use of dynamic materials in which spiropyran has been attached to the surfaces of polymers, biomacromolecules, inorganic nanoparticles, as well as solid surfaces. The resulting materials show fascinating properties whereby the state of the switch intimately affects a multitude of useful properties of the support. The utility of the spiropyran switch will undoubtedly endow these materials with far-reaching applications in the near future.
1,384 citations