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Laboratoire d'Electrochimie Moleculaire, LEM, Paris

UMR CNRS - Université Paris Diderot - Paris France

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Multidisciplinary university Université Paris Diderot - Paris 7 UFR de Chimie -  Université Paris Diderot - Paris 7 - Chemistry Department CNRS - Institute of Chemistry (INC)
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Research Group LEM_1

"Electron Transfer and Molecular Changes. Fundamental Reactivity and Catalysis"

       

 

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Our group is recognized at an international level in the field of molecular electrochemistry and electron transfer reactivity. Our research aim at the general understanding of all aspects of electron transfer chemistry coupled to molecular changes such as proton coupled electron transfer (PCET) or bond cleavage or bond formation. The selected strategy takes advantage of the synergistic use of experimental electrochemical studies, photochemical studies, and of theoretical descriptions of the mechanistic models.

Recently, we have made important contributions to proton-coupled electron transfers (PCET) reactions, that are the object of current active theoretical and experimental attention in view of their implication in a huge number of natural and synthetic processes. Concerning the later, we are investigating the electrochemical activation by metal complexes of small molecules such as H2, O2, H2O, CO2 in an effort to address contemporary energy challenges (storing energy into chemical bonds). For all of these reactions, the coupling of electron and proton transfers is likely to play a crucial role, both in terms of mechanism, efficiency, and products distribution.

 

Keywords

Molecular electrochemistry,molecular catalysis and catalytic films, electron transfer, proton-coupled electron transfer, activation of small molecules (N2, CO2, O2, H2O), biomimetic reactions, reaction mechanisms , ab initio calculations, electron transfer modelss

 


Group Leader

Marc Robert (Professor, Paris 7)


Group Members (2014-02)

Elodie Anxolabéhère (Senior Scientist, CNRS)
Julien Bonin (Associate Professor, Paris 7)
Cyrille Costentin (Professor, Paris 7)
Jean-Michel Savéant (Senior Scientist, CNRS)
Cédric Tard (Associate Scientist, CNRS)

Claudio Cometto (PhD student)
Hachem Dridi (PhD student)
Antoine Maurin (PhD student)
Heng Rao (PhD student)
Arnaud Tatin (PhD student)

Iban Azcarate (Post-doctor SATT)
Thomas Porter (Post-doctor ANR)

Recent publications -------------------------------------------------------------------------------------------------------------------------------------------

 

Current issues in molecular catalysis illustrated by iron porphyrins as catalysts of the CO2-to-CO electrochemical conversion.
Cyrille Costentin, Marc Robert, and Jean-Michel Savéant
Acc. Chem. Res, 48 (2015) 2996-3006. Abstract

Molecular catalysis of the electrochemical and photochemical reduction of CO2 with earth abundant metal complexes. Selective production of CO vs HCOOH by switching of the metal center.
Lingjing Chen, Zhenguo Guo, Xi-Guang Wei, Charlotte Gallenkamp, Julien Bonin, Elodie Anxolabéhère-Mallart, Kai-Chung Lau, Tai-Chu Lau, and Marc Robert
J. Am. Chem. Soc., 137 (2015) 10918-10921. Abstract

Cyclic voltammetry analysis of electrocatalytic films.
Cyrille Costentin and Jean-Michel Savéant
J. Phys. Chem. C, 119 (2015) 12174-12182. Abstract

Selective and efficient photocatalytic CO2 reduction to CO using visible light and an iron-based homogeneous catalyst.
Julien Bonin, Marc Robert, and Mathilde Routier
J. Am. Chem. Soc., 136 (2014) 16768-16771. Abstract

Molecular catalysis of H2 evolution. Diagnosing heterolytic vs. homolytic pathways.
Cyrille Costentin, Hachem Dridi, and Jean-Michel Savéant
J. Am. Chem. Soc., 136 (2014) 13727-13734. Abstract

Electrochemical formation and reactivity of a manganese peroxo complex: acid driven H2O2 generation vs. O-O bond cleavage.
V. Ching, E. Anxolabéhère-Mallart, H. E. Colmer, C. Costentin, P. Dorlet, T. A. Jackson, C. Policar, and M. Robert
Chem. Sci., 5 (2014) 2304-2310. Abstract

Bioinspired iron sulfide nanoparticles for cheap and long-lived electrocatalytic molecular hydrogen evolution in neutral water.
C. Di Giovanni, W.i-A. Wang, S. Nowak, J.-M. Grenèche, H. Lecoq, L. Mouton, M. Giraud, and C. Tard
ACS Catal., 4 (2014) 681-687. Abstract

Local Proton Source Enhances CO2 Electroreduction to CO by a Molecular Fe Catalyst.
Cyrille Costentin, Samuel Drouet, Marc Robert, and Jean-Michel Savéant
Science, 338 (2012) 90-94. Abstract

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