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

LIA France-Japan GEM Réseau RMN Aquitain Master AC2QMAPS IPEP master UREKA UMT FOLIES INDIA
Offres d'Emploi Plateau Technique Conseil d'Unité Animation Scientifique WEB Editorial Committee Hygiène & Sécurité Communication Administration Directoire Scientifique Direction
Christian Salesse, 8 June 2017, 4pm, 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
Événements Nouveau
Partenariat Congés Formation Admin CBMN Conseil Institut/Scientifique
Affiliations Les sites CBMN
LIA France-Japan GEM Réseau RMN Aquitain Master AC2QMAPS IPEP master UREKA UMT FOLIES INDIA
Offres d'Emploi Plateau Technique Conseil d'Unité Animation Scientifique WEB Editorial Committee Hygiène & Sécurité Communication Administration Directoire Scientifique Direction
Chimie Biophysique Chimie Biomimétique et Thérapeuti... Biologie et Biotechnologie Administration
Christian Salesse, 8 June 2017, 4pm... 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...
Événements Nouveau
Patricia DULOR Alain BRISSON Olivier LAMBERT Jochen LANG Pascale SUBRA-PATERNAULT Maria URDACI Marie-Christine DURRIEU Xavier SANTARELLI Gilles GUICHARD Ivan HUC Isabelle BESTEL Juan ELEZGARAY Antoine LOQUET Sophie LECOMTE Reiko ODA Marc BONNEU

Chiral Molecular Assemblies

 

 

Our group focuses on the fine control of nano-micro nanostructures based on molecular self-assemblies. We aim at understanding the fundamental mechanism of the nano-chiral or periodic assemblies and the parameters which controls their morphologies and dynamics.

Hofmeister effect – ion specificity on the molecular assemblies

Since the seminal publication by Franz Hofmeister in 1888, the specific ion effect, Hofmeister effect, has been widely reviewed both theoretically and experimentally in a number of colloidal systems on the stability and structure of macro, supra molecular systems. However, a unifying theory is still missing and thus the Hofmeister series yet represents an appealing challenge in colloid and interface science; classical theories based on Van der Waals interactions and the electrical double layer fail to explain a basic fundamental observation. We have been investigating the ion specificity by characterizing the micellar properties with various counterions. We have developed an international collaborative network which focus on the micellar interface, the distribution of counterions and hydration. Micelles with counterions with various ionic properties, hydration energy, polarizability in water are analyzed in order to quantify interfacial population of counterions and water. 

Collaborations:
Prof. L. Romsted (Rutgers University, USA)
Dr. D. Bassani (ISM, Bordeaux)

self-assembled nano helices with controllable helicity, dimension and pitch

We have reported, various chiral self-assembled structures such as twisted, helical, and tubular nanostructures with controllable chirality, dimensions in various solvents. In contrast to the chiral polymers, these structures are based on non-covalent interaction, on crystalline organization of small and often amphiphilic molecules (surfactants, peptides, sugers, etc…) and solvent molecules, and allows designing chiral nanoobjects with pitches and diameters(20 nm - µm) which have been inaccessible with chiral macromolecules.

Their morphologies are controlled by parameters such as temperature, small amounts of additives and enantiomeric excess.  The originality of these system is based on the modulality of the morphologies of these nano-micro helices, unprecedented properties in the literature. Very recently, we reported for the first time, in situ chirality inversion observed by microscope, with detailed inversion molecular and supramolecular kinetics.

Collaborations:
Dr. T. Buffeteau (ISM, Bordeaux)

 

Functionalized Nanohelices for novel devices for nanophotonics, nanoopetics, nanosensors

Chiral nano helices with controllable (periodicities, diameters, chirality) morpholgies based on self-assemblies of Gemini-type amphiphiles are used as template for synthesizing silica nanohelices, which are further functionalized and used as scaffold for the grafting of metal (ex. Au, Ag) nanoparticles, coating with semi-conductor (ex. TiO2 and ZnO)  films, fluorescence dyes, or metal complexes.
Preliminary results obtained by Oda’s group have shown that the silica nanohelices can be coated with gold NPs (Figure 1) and their chiral organization gives rise to chiral plasmon band. They have also reported the helices coated with semiconductor materials (TiO2 and ZnO) (Figure 2) Such systems represent new optoelectronic, chirooptical and nanoelectronic properties which are of great interest in number of applications
Collaborations:
Dr. S. Leconte (CBMN, Bordeaux)
Dr. P. Barois, V. Ponsinet (CRPP, Bordeaux)
Dr. M.H. Delville (ICMCB, Bordeaux)
Dr. C. Bergaud, (LAAS, Toulouse)
 

Chiral  Nanocatalysts for Enantioselective Transformations in aqueous media

We aim to design and prepare new chiral catalytic nanomaterials by: (1) grafting catalytic species (polyoxometalates (POMs), organometallic complexes or catalytic nanoparticles) onto chiral substrates, or (2) synthesis and self-assembly of catalytic species or transition metal-based surfactant, and to exploit their sustainable properties in asymmetric synthesis. These chiral recoverable nanocatalysts are extremely promising alternative to homogeneous non recoverable catalysts.
 
Collaborations:
Prof. K. Fukami (Kyoto University)
Prof. Y.Karpichev (NAS Ukraine)

Towards flexible devices based on chiral nanoobjects.

The key challenge for the use of these well controlled hybrid helices is their hierarchical organization into nano arrays. We particularly focus on controlled patterning and alignment of functional nanohelices by the use of hybrid nanohelices-polymer, Langmuir Blodget film or microfluidic devices (coll. J. Leng, Laboratoire of Future).

 Collaborations:

Prof. H.Ihara, (Kumamoto University)

Dr. J. Leng, (LOF, Bordeaux)

 

Bioactive Materials: Cell Adhesion and Differenciation

Influence of bioactive nanohelical shape on stem cell fate

Coll. with MC.Durrieu

The silica nanohelices are elaborated to design Smart Synthetic ExtraCellular Matrices (SSECM), which could present the same order of dimension and periodicity as collagen fibers inside the ECM. The objective is to evaluate the influence of the bioactive SSECM (functionalized or incubated with various active principles [cell adhesion peptides, cell differentiation peptides and microvesicles well-known by our team]) to hMSC in order to reproduce the role of native signaling biomolecules in term of phenotype, function and differentiation into mature specialized cells (adipocytes, chondrocytes and osteoblasts).

 

 Collaborations:

Prof. S. Wettig (Waterloo University, Canada)

 

France-Japan Laboratoire International Associé (LIA)

In 2015, our proposal for the France-Japan Laboratoire International Associé (LIA) has been accepted and a new LIA-CNPA has been created on Chiral Nanostructures for Photonic Applications (CNPA) - Hierarchical chiral nanostructures based on molecular assemblies for light management, sensor, chiral separation and catalysis.

The consortium of 10 groups created for this collaborative research shows a perfect complementarity while sharing specific or common competence between the different partners: chiral organic self-assembly (Oda (France), Loquet (France), Ihara (Japan)) and inorganic transcription to colloid suspension and nanoparticle organization (Oda (France) + Ihara (Japan)), synthesis of polymer films or construction of scaffolds and inclusion of nanoparticles (Ihara (Japan), Sagawa, Fukami (Kyoto)), designing photochromic molecules, and construction of functional molecular assemblies (Bassani, Del Guerzo (France), Imahori (Japan), Ihara (Japan)), chirooptical measurements (Buffteau, Loquet, Bonhommeau, Oda (France), Ihara, Sagawa (Japan)) and the evaluation of the functions of the composites (Sagawa, Fukami (Japan), Oda (France)).

Chef d'équipe

ODA Reiko

Reiko ODA

Directeur de recherche

CBMN @ IECB

Institut Européen de Chimie et Biologie (IECB)

2 rue Robert Escarpit
33607 Pessac
Tel. : +33 (5) 40 00 30 38

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Dernière mise à jour : 19/05/2017

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