A5011964429- X-ray Diffraction in Crystallography
- Crystallization and Solubility Studies
- Electrocatalysts for Energy Conversion
- Lanthanide and Transition Metal Complexes
- Extraction and Separation Processes
- Radioactive element chemistry and processing
- Metalloenzymes and iron-sulfur proteins
- Advanced battery technologies research
- CO2 Reduction Techniques and Catalysts
- Magnetism in coordination complexes
- Organic Light-Emitting Diodes Research
- Bauxite Residue and Utilization
- Medical Imaging Techniques and Applications
- Asymmetric Hydrogenation and Catalysis
- Advanced Photocatalysis Techniques
- Chemical Synthesis and Characterization
- Recycling and Waste Management Techniques
- Graphite, nuclear technology, radiation studies
- Catalytic Alkyne Reactions
- Luminescence and Fluorescent Materials
- Mass Spectrometry Techniques and Applications
- Folate and B Vitamins Research
- Supramolecular Self-Assembly in Materials
- Organometallic Complex Synthesis and Catalysis
- Advanced Chemical Physics Studies
CEA Marcoule
2022-2024
Commissariat à l'Énergie Atomique et aux Énergies Alternatives
2009-2024
CEA Grenoble
2008-2021
Laboratoire de Chimie et Biologie des Métaux
2012-2021
Université Grenoble Alpes
2008-2021
Centre National de la Recherche Scientifique
2008-2021
Institut Nanosciences et Cryogénie
2008-2013
Université Joseph Fourier
2008-2013
Laboratoire de Chimie de Coordination
2011-2013
Chimie ParisTech
2010
Photosynthesis has been for many years a fascinating source of inspiration the development model systems able to achieve efficient light-to-chemical energetic transduction. This field research, called "artificial photosynthesis," is currently subject intense interest, driven by aim converting solar energy into carbon-free fuel hydrogen through light-driven water splitting. In this review, we highlight recent achievements on oxidation and production molecular catalysts shed light perspectives...
A new type of octacoordinated ternary β-diketonates complexes terbium and europium has been prepared using the anionic tetradentate terpyridine-carboxylate ligand (L) as a sensitizer lanthanide luminescence in combination with two ligands 2-thenoyltrifluoroacetyl-acetonate (tta–) for Eu3+ trifluoroacetylacetonate (tfac–) Tb3+. The solid state structures [Tb(L)(tfac)2] (1) [Eu(L)(tta)2] (2) have determined by X-ray crystallography. Photophysical 1H NMR indicate high stability these respect to...
Abstract A series of seven new tetrazole‐based ligands (L1, L3–L8) containing terpyridine or bipyridine chromophores suited to the formation luminescent complexes lanthanides have been synthesized. All were prepared from respective carbonitriles by thermal cycloaddition sodium azide. The crystal structures homoleptic terpyridine–tetrazolate [Ln(L i ) 2 ]NHEt 3 (Ln=Nd, Eu, Tb for =1, 2; Ln=Eu =3, 4) and monoaquo bypyridine–tetrazolate complex [Eu(H O)(L7) determined. tetradentate...
Abstract Cobalt(diimine‐dioxime) complexes catalyze hydrogen evolution with low overpotentials and remarkable stability. In this study, DFT calculations were used to investigate their catalytic mechanism, demonstrate that the initial active state was a Co I complex H 2 evolved in heterolytic manner through protonation of II hydride intermediate. addition, these catalysts shown adjust electrocatalytic potential for pH value solution such property assigned presence + ‐exchange site on oxime...
The development of new energy storage technologies is central to solving the challenges facing widespread use renewable energies.
Tetrazolate groups have been included by a convenient synthetic route in diverse ligand topologies, which allowed the incorporation of lanthanide ions into highly luminescent double- and triple-helical complexes, demonstrating their potential for expansion chemistry development lanthanide-based applications.
Two tridentate pyridine-tetrazolate ligands (H2pytz and H2pytzc), analogues of the well-known dipicolinate (H2dpa) ligand, have been synthesized in a straightforward manner used for lanthanide(III) coordination. The structures resulting tris-ligand complexes were determined solution (1H-NMR), where they remain undissociated, as well solid state (X-ray diffraction). solubility these anionic can be easily tuned by changing countercation. bis-tetrazolate-pyridine ligand H2pytz sensitizes very...
A combined theoretical and experimental approach has been employed to characterize the hydrido-cobaloxime [HCo(dmgH)(2)(PnBu(3))] compound. This complex was originally investigated by Schrauzer et al. [Schrauzer al., J. Am. Chem. Soc. 1971, 93,1505] since referred as a key, stable analogue of hydride intermediate involved in hydrogen evolution catalyzed cobaloxime compounds [Artero, V. Angew. Chem., Int. Ed. 2011, 50, 7238-7266]. We quantum chemical calculations, using density functional...
Enantiopure undecagold clusters protected by chiral atropisomeric diphosphine ligands (P⁁P) have been synthesized the stoichiometric reduction of corresponding (P⁁P)(AuCl)2 complexes with NaBH4. The molecular mono-disperse [Au11(P⁁P)4Cl2]Cl species thoroughly characterized using an array analytical techniques. 31P NMR experiments suggested presence a slow intramolecular ligand exchange process. Circular dichroism measurements showed that enantiomeric display mirror-image chiroptical...
The phosphorescent binuclear iridium(III) complexes tetrakis(2-phenylpyridine)μ-(2,2′:6′,2″-terpyridine-6,6″-dicarboxylic acid)diiridium (Ir1) and tetrakis(2-(2,4-difluorophenyl) pyridine))μ-(2,2′:6′,2″-terpyridine-6,6″-dicarboxylic (Ir2) were synthesized in a straightforward manner characterized using X-ray diffraction, NMR, UV–vis absorption, emission spectroscopy. have similar solution structures which the two iridium centers are equivalent. This is further confirmed by solid state...
A new setup for pump-flow-probe X-ray absorption spectroscopy has been implemented at the SuperXAS beamline of Swiss Light Source. It allows recording spectra with a time resolution tens microseconds and high detection efficiency samples sub-mM concentrations. continuous wave laser is used photoexcitation, distance between beams velocity liquid flow determining delay, while focusing both speed define resolution. This method compared alternative measurement technique that utilizes 1 kHz...
The design of molecular dyads combining a light-harvesting unit with an electroactive centre is highly demanded in the field artificial photosynthesis. versatile Copper-catalyzed Azide–Alkyne Cycloaddition (CuAAC) procedure was employed to assemble ruthenium tris-diimine unprecedented azide-substituted copper diimine–dioxime moiety. resulting Ru<sup>II</sup>Cu<sup>II</sup> dyad <bold>4</bold> characterized by electrochemistry, <sup>1</sup>H NMR, EPR, UV-visible absorption, steady-state...
DOI: 10.1111/j.1751-1097.2011.00966.x In Photochemistry and Photobiology Vol 87(5) pp. 946–964 an erratic structure was published. The polyoxometallate in Figure 19 is not that of catalyst 23, but the Co-derivative described reference 131. A corrected provided below: Light-driven water oxidation catalyzed by 23 presence PS 14 following reference:
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