Institut de Chimie & Biologie des Membranes & des Nano-objets • Bordeaux

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O.Reinaud & V. Artero, 7/12/2017, 10 am, IECB R. Dos santos Morais, 30/11/2017, 4 PM, ENSCBP Christian Griesinger, November 24th, 11am, IECB Takahiro Muraoka, 16/11/2017, 11am, ENSCBP Vladimir Torbeev, 9/11/2017, 2pm, ENSCBP M. D. Smith & T.Constantieux, 3/11/2017, 2h30 pm, IECB James Nowick, 15 september 2017, 11am, IECB Emmanuelle Thinon, 28 June 2017, 11 am, IECB Caroline Tokarski, 15 June 2017, 4pm, ENSCBP Christian Salesse, 8 June 2017, 4pm, ENSCBP Patrice Rey, 01 June 2017, 2h30 pm, ENSCBP Christina Sizun, 18 May 2017, 4 pm, ENSCBP Marisela Velez, 5 May 2017, 11am, IECB Iqbal Choudhary, 27 April 2017, 4 pm, ENSCBP Vincent Aucagne, 21 April 2017, 11 am, IECB Sophie Zinn-Justin, 14 April 2017, 11 am, IECB Cécile Feuillie, 16 February 2017, 4 PM, ENSCBP Félix M. Goñi, 8 december 2016, 4 pm, ENSCBP Félix M. Goñi, 17 november 2016, 4 pm, ENSCBP Carl Creutz, 20 october 2016, 4 pm, ENSCBP Diego Romero, 30 september 2016, 11 am, IECB A. Ciaccafava, 8 september 2016, 14h, ENSCBP A. Ramamoorthy, 16 June 2016, 16h, ENSCBP Alexandre de Brevern, 2 june 2016, ENSCBP Isabelle Landrieu, 26 May, 16h, ENSCBP Frances Sepavoric, 12 May, 16h, ENSCBP Thomas Pradeu, 7 April 2016, 9h, ENSCBP Françoise Argoul, 3 march 2016, 16h, ENSCBP Corinne Loutelier-Bourhis, 16/12/2015, 16h Aristotelis XENAKIS, 3 december 2015, 16h Fabian Kiessling, 26 november 2015, 11h Michaël Molinari, 20 november 2015, 11h Dipankar Das Sarma, 28 October 2015, 14h. Olivier Donard, 22 october 2015, 16h, ENSCBP E. Morvan & A.Grelard, 17/12/2015, 16h, ENSCBP Christophe Cullin, 10 september 2015, 14 h Brigitte Lindet, 18 June 2015, 16h, ENSCBP(B) Marion Decossas, 4 June 2015, 16h, ENSCBP(B) Pascale Schellenberger, 21 Mai 2015, 16h F. Leal-Calderon, 7 May 2015, 16h, ENSCBP(B) Ibrahim Abdulhalim, 9 April 2015, 14h, ENSCBP Manon Carré, 26 March 2015, 14h, ENSCBP(B) C. Bure & JM Schmitter, 19 March 2015, 16h T. Ogata & H. Ihara, 17 March 2015, 11h, IECB Banafshe Larijani, 12 March 2015, 16h, ENSCBP
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O.Reinaud & V. Artero, 7/12/2017, 1... R. Dos santos Morais, 30/11/2017, 4... Christian Griesinger, November 24th... Takahiro Muraoka, 16/11/2017, 11am,... Vladimir Torbeev, 9/11/2017, 2pm, E... M. D. Smith & T.Constantieux, 3/11/... James Nowick, 15 september 2017, 11... Emmanuelle Thinon, 28 June 2017, 11... Caroline Tokarski, 15 June 2017, 4p... Christian Salesse, 8 June 2017, 4pm... Patrice Rey, 01 June 2017, 2h30 pm,... Christina Sizun, 18 May 2017, 4 pm,... Marisela Velez, 5 May 2017, 11am, I... Iqbal Choudhary, 27 April 2017, 4 p... Vincent Aucagne, 21 April 2017, 11 ... Sophie Zinn-Justin, 14 April 2017, ... Cécile Feuillie, 16 February 2017,... Félix M. Goñi, 8 december 2016, 4... Félix M. Goñi, 17 november 2016, ... Carl Creutz, 20 october 2016, 4 pm,... Diego Romero, 30 september 2016, 11... A. Ciaccafava, 8 september 2016, 14... A. Ramamoorthy, 16 June 2016, 16h,... Alexandre de Brevern, 2 june 2016, ... Isabelle Landrieu, 26 May, 16h, ENS... Frances Sepavoric, 12 May, 16h, ENS... Thomas Pradeu, 7 April 2016, 9h, EN... Françoise Argoul, 3 march 2016, 1... Corinne Loutelier-Bourhis, 16/12/20... Aristotelis XENAKIS, 3 december 201... Fabian Kiessling, 26 november 2015,... Michaël Molinari, 20 november 2015... Dipankar Das Sarma, 28 October 2015... Olivier Donard, 22 october 2015, 16... E. Morvan & A.Grelard, 17/12/2015, ... Christophe Cullin, 10 september 201... Brigitte Lindet, 18 June 2015, 16h,... Marion Decossas, 4 June 2015, 16h, ... Pascale Schellenberger, 21 Mai 2015... F. Leal-Calderon, 7 May 2015, 16h, ... Ibrahim Abdulhalim, 9 April 2015, 1... Manon Carré, 26 March 2015, 14h, ... C. Bure & JM Schmitter, 19 March 20... T. Ogata & H. Ihara, 17 March 2015,... Banafshe Larijani, 12 March 2015, 1...
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Patricia DULOR Anthony BOUTER Olivier LAMBERT Jochen LANG Pascale SUBRA-PATERNAULT Maria URDACI Marie-Christine DURRIEU Xavier SANTARELLI Gilles GUICHARD Yann FERRAND Isabelle BESTEL Juan ELEZGARAY Antoine LOQUET Sophie LECOMTE Reiko ODA Marc BONNEU

O.Reinaud & V. Artero, 7/12/2017, 10 am, IECB

The seminars will take place the 7th of December 2017, at 10 am and 11 am, in the IECB amphitheatre, 2 rue Robert Escarpit Pessac.

 

Contact: Yann Ferrand, y.ferrand@cbmn.u-bordeaux.fr

 

 

 

Talk 1 : Second (and further..) Coordination Sphere Effects in Biomimetic Cavities

 

Olivia Reinaud

Laboratoire de Chimie et Biochimie, CNRS UMR 8601, Université Paris Descartes, Sorbonne Paris Cité, 45 rue des Saints Pères, 75006 Paris, France

 

Olivia.Reinaud@parisdescartes.fr

 

Abstract

 

Metal ions are essential to life for all organisms. More than 30% of the enzymes present one or more metal ions in their active sites. They may have a structuring role vis-à-vis the protein, they may also be key in the recognition of a substrate or of a cofactor, or they may act as catalyst for the activation of substrates and small molecules such as water or dioxygen. The knowledge of these metallic systems is an infinite source of inspiration for chemists. The lack of knowledge of their role makes them a subject of fundamental studies essential to the understanding of life.

 

The aim of our work is to design supramolecular systems that will mimic both, the coordination core, and the hydrophobic pocket of a metallo-enzyme active site. Our strategy relies on the synthesis of cavity-based ligands that allow the controlof the metal ion micro-environment, together with the approach and the binding of guest molecules. Since many years, we have been developing systems based on the calix[6]arene scaffold, giving rise to the so-called “funnel complexes”. More recently, we started to explore metal complexes based on the resorcin[4]arene scaffold, which provides a supramolecular environment different in shape, rigidity and binding properties, so-called “Bowl-complexes”.

 

Hence, various aspects of these cavity-complexes will be presented and the Bowl vs. Funnel supramolecular concepts for biomimetic metal complexes will be discussed. This lecture will focus on the impact of the second and third coordination spheres provided by the cavities on their hosting properties and redox behavior

 

Reviews: Biomimetic and self-assembled calix[6]arene-based receptors for neutral molecules, D. Coquière, S. Le Gac, U. Darbost, O. Sénèque, I. Jabin, O. Reinaud, Org. Biomol. Chem., 2009, 7, 2485-2500. Calixarenes and resorcinarenes as scaffolds for supramolecular metallo-enzyme mimicry, J.-N. Rebilly, O. Reinaud, Supramol. Chem., 2014, 26, 454-479. DOI: 10.1080/10610278.2013.877137. Biomimetic Cavity-Based Metal Complexes, J.-N. Rebilly, B. Colasson, O. Bistri, D. Over, O. Reinaud, Chem. Soc. Rev. 2015, 44, 467-489. DOI: 10.1039/c4cs00211c. Supramolecular Control of Transition Metal Complexes in Water by a Hydrophobic Cavity: a Bio-Inspired Strategy, O. Bistri and O. Reinaud, Org. Biomol. Chem., 2015, 13, 2849–2865. DOI: 10.1039/C4OB02511C. Supramolecular Modeling of Mono-Copper Enzyme Active Sites with Funnel-Complexes, N. Le Poul, Y. Le Mest, I. Jabin, O Reinaud, Acc. Chem. Res., 2015, 48, 2097–2106. DOI: 10.1021/acs.accounts.5b00152A.

 

 

Talk 2 : Molecular approaches and H2 technologies

 

Vincent Artero

 

Laboratoire de Chimie et Biologie des Métaux

Université Grenoble Alpes, CNRS, CEA

Grenoble, France.

 

Vincent.Artero@cea.fr

 

Abstract

 

New directions are urgently needed in energy technologies, and in particular in hydrogen technologies, to raise efficiency and stability of the systems while lowering their cost. Bio-inspiration has a great potential to making breakthroughs in research and development. In particular hydrogenase enzymes compete with platinum as catalysts for H2/H+ interconversion and such an activity can be reproduced in synthetic mimics [1, 2] but such molecular systems are often challenged by solid-state catalysts, both in terms of activity and stability. We will show how the immobilization of biomimics onto surfaces allows the preparation of highly active electrode materials compatible with existing PEM electrolysis technology [3-6]. Besides, we will also revisit the structure of reactivity of amorphous molybdenum sulfide, which actually stands as a coordination polymer, therefore bridging the molecular and soli-state sides of H2/H+ catalysis [7]. Besides, we will also describe our effort towards the combination of such catalysts with various photoactive motifs for the preparation of photoelectrode materials [8-10] that can be implemented into photoelectrochemical (PEC) cells for water splitting.

 

References

[1] T.R. Simmons, V. Artero, Catalytic Hydrogen Oxidation: Dawn of a New Iron Age, Angew. Chem. Int. Ed., 52 (2013) 6143-6145.

[2] T.R. Simmons, G. Berggren, M. Bacchi, M. Fontecave, V. Artero, Mimicking hydrogenases: From biomimetics to artificial enzymes, Coord. Chem. Rev., 270–271 (2014) 127-150.

[3] A. Le Goff, V. Artero, B. Jousselme, P.D. Tran, N. Guillet, R. Metaye, A. Fihri, S. Palacin, M. Fontecave, From Hydrogenases to Noble Metal-Free Catalytic Nanomaterials for H-2 Production and Uptake, Science, 326 (2009) 1384-1387.

[4] P.D. Tran, A. Le Goff, J. Heidkamp, B. Jousselme, N. Guillet, S. Palacin, H. Dau, M. Fontecave, V. Artero, Noncovalent Modification of Carbon Nanotubes with Pyrene-Functionalized Nickel Complexes: Carbon Monoxide Tolerant Catalysts for Hydrogen Evolution and Uptake, Angew. Chem. Int. Ed., 50 (2011) 1371-1374.

[5] T.N. Huan, R.T. Jane, A. Benayad, L. Guetaz, P.D. Tran, V. Artero, Bio-inspired noble metal-free nanomaterials approaching platinum performances for H2 evolution and uptake, Energy Environ. Sci., 9 (2016) 940-947.

[6] P.D. Tran, A. Morozan, S. Archambault, J. Heidkamp, P. Chenevier, H. Dau, M. Fontecave, A. Martinent, B. Jousselme, V. Artero, A noble metal-free proton-exchange membrane fuel cell based on bio-inspired molecular catalysts, Chem. Sci., 6 (2015) 2050-2053.

[7] P.D. Tran, T.V. Tran, M. Orio, S. Torelli, Q.D. Truong, K. Nayuki, Y. Sasaki, S.Y. Chiam, R. Yi, I. Honma, J. Barber, V. Artero, Coordination polymer structure and revisited hydrogen evolution catalytic mechanism for amorphous molybdenum sulfide, Nat. Mater., 15 (2016) 640-646.

[8] N. Kaeffer, J. Massin, C. Lebrun, O. Renault, M. Chavarot-Kerlidou, V. Artero, Covalent Design for Dye-Sensitized H2-Evolving Photocathodes Based on a Cobalt Diimine–Dioxime Catalyst, J. Am. Chem. Soc., 138 (2016) 12308-12311.

[9] T. Bourgeteau, D. Tondelier, B. Geffroy, R. Brisse, R. Cornut, V. Artero, B. Jousselme, Enhancing the Performances of P3HT:PCBM–MoS3-Based H2-Evolving Photocathodes with Interfacial Layers, ACS Applied Materials & Interfaces, 7 (2015) 16395–16403.

[10] T. Bourgeteau, D. Tondelier, B. Geffroy, R. Brisse, C. Laberty-Robert, S. Campidelli, R. de Bettignies, V. Artero, S. Palacin, B. Jousselme, A H-2-evolving photocathode based on direct sensitization of MoS3 with an organic photovoltaic cell, Energy Environ. Sci., 6 (2013) 2706-2713.

 

 

 

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