Christophe Orain

ORCID: 0000-0003-2764-6090
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About
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Research Areas
  • Electrocatalysts for Energy Conversion
  • Electrochemical Analysis and Applications
  • Metalloenzymes and iron-sulfur proteins
  • Molecular Junctions and Nanostructures
  • Advanced battery technologies research
  • Advanced biosensing and bioanalysis techniques
  • CO2 Reduction Techniques and Catalysts
  • Conducting polymers and applications
  • Ammonia Synthesis and Nitrogen Reduction
  • Wastewater Treatment and Nitrogen Removal
  • Hybrid Renewable Energy Systems
  • Catalysis and Hydrodesulfurization Studies
  • Electrochemical sensors and biosensors
  • Environmental remediation with nanomaterials
  • Analytical Chemistry and Sensors
  • Iron oxide chemistry and applications
  • Microbial Fuel Cells and Bioremediation
  • Ionic liquids properties and applications

Laboratoire Chimie Electrochimie Moléculaires et Chimie Analytique
2013-2024

Université de Bretagne Occidentale
2011-2022

Laboratoire de Chimie
2014-2022

Centre National de la Recherche Scientifique
2011-2018

Bioénergétique et Ingénierie des Protéines
2015-2018

Aix-Marseille Université
2015-2018

Institut de Microbiologie de la Méditerranée
2016

Iron-thiolate complexes of the type [Fe2 (μ-bdt)(CO)6-x P(OMe3 )x ] (bdt=S2 C6 H4 =benzenedithiolate, x≤2) are simplified models iron-iron hydrogenase enzymes. Recently, we have shown that these water-insoluble organometallic complexes, when included into micelles formed by sodium dodecyl sulfate (SDS), good catalysts for electrochemical production hydrogen in aqueous solutions at pH<6. We herein report all-CO derivative (μ-bdt)(CO)6 (1), owing to its comparatively low reduction potential,...

10.1002/cssc.201300631 article EN ChemSusChem 2013-10-11

The mechanism of reaction FeFe hydrogenases with oxygen has been debated. It is complex, apparently very dependent on the details protein structure, and difficult to study using conventional kinetic techniques. Here we build our recent work anaerobic inactivation enzyme [Fourmond et al. Nat. Chem. 2014, 4, 336-342] propose apply a new method for studying this reaction. Using electrochemical measurements turnover rate hydrogenase, could resolve first steps inhibition accurately determine...

10.1021/jacs.5b06934 article EN Journal of the American Chemical Society 2015-09-09

Localized "electroclick" was achieved on azido-terminated self-assembled monolayers using Scanning Electrochemical Microscopy (SECM) in feedback mode, which the substrate is not electrically connected (unbiased conditions). The method allows both local immobilization of diverse functional moieties and monitoring each modification step at a micrometer scale. Conditions "click" coupling reaction were optimized especially to avoid deposit metallic copper by choice specific ligand stabilize...

10.1021/la405005f article EN Langmuir 2014-03-27

Abstract A novel and general strategy for the immobilisation of functional objects onto electrodes is described. The concept based on addition two pendant ethynyl groups a bis(pyridyl)amine derivative, which acts as molecular platform. This platform pre‐functionalised with an N 3 ‐tagged object interest by Huisgen cycloaddition to one in biphasic conditions. Hence, when complexed Cu II , this molecular‐object holder can be immobilised, “self‐induced electroclick”, through second group...

10.1002/chem.201102620 article EN Chemistry - A European Journal 2011-12-09

We present here a novel strategy based on the covalent grafting of C-functionalized Ni-cyclam complex onto glassy carbon to achieve heterogeneous electrocatalytic CO2 reduction in neutral water at low overpotential (-500 mV vs. NHE), with moderate turnover number (TON = 454), high selectivity (85% CO produced) and good faradaic efficiency (56% CO). Direct comparison N-functionalized analogue highlights benefits this approach terms electroreduction.

10.1039/d2cc01667b article EN Chemical Communications 2022-01-01
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