[ LIA CNPA

Activity of Members

 

Chiral Nano-materials based on molecular assemblies, towards functional hybrid materials

Reiko Oda
Reiko Oda
Sylvain Nlate
Sylvain Nlate
Emilie Pouget
Emilie Pouget

Summary of Current Research

We investigate how different parameters influence the formation of various self-assemblies of amphiphilic molecules. We specifically focus on chiral self-assemblies of low molecular weight amphiphilic molecules. Recently, we have developed hybrid chiral nanostructures forNEMS, SERS substrates, chiroptical materials, assymetric catalysis substrates, as well as biomaterials.

 

Solid-state NMR of Molecular Assemblies

Antoine Loquet
Antoine Loquet
Birgit Habenstein
Birgit Habenstein

Summary of Current Research

Our group develop and apply state-of-the-art methods using solid-state NMR spectroscopy to investigate the structure and dynamics of molecular assemblies. Our research focuses on the structure determination at atomic resolution on complex self-assemblies, to understand the role of weak interactions in the supramolecular architecture. We study self-assemblies ranging from biomolecular systems (amyloid fibrils, bacterial filaments, biofilms) to supramolecular systems in material science (fullerene, nanotubes).

 

Supramolecular control of excited-state properties

Dario Bassani
Dario Bassani

Summary of Current Research

Our work focusses on the use of supramolecular interactions to control the photochemical and photophysical behavior of excited states in solution, in the solid, and on surfaces. Intermolecular communication in these assemblies is harnessed to give systems ordering of the electro- and photo-active subunits.

 

Raman Spectroscopy from the micro to the nanoscale, for materials science and biochemistry

Bonhommeau Sébastien
Bonhommeau Sébastien

Summary of Current Research

We investigate chemical and structural properties of semiconducting and spin-crossover microcrystals, polymer-wrapped single-walled carbon nanotubes and graphene sheets by means of confocal Raman spectroscopy. We can also analyze nanoscale chemical characteristics of nanomaterials using tip-enhanced Raman spectroscopy (TERS), and study plasmonic properties of single noble-metal nanostructures thanks to Rayleigh and surface-enhanced Raman scattering (SERS) as well as absorption measurements.

 

Supramolecular Organo- & Gold- Catalysis

Brigitte Bibal
Brigitte Bibal

Summary of Current Research

Since 2003, Brigitte BIBAL is an associate professor of the Department of Chemistry, at the University of Bordeaux. Her research interest is organic and supramolecular chemistry, to develop new functional supramolecular receptors for catalysis and detection. During the last five years, she is strongly involved in Supramolecular Catalysis and Gold catalysis & nano-chemistry.

 

Vibrational Optical Activity

Thierry Buffeteau
Thierry Buffeteau
Nicolas Daugey
Nicolas Daugey

Summary of Current Research

T. Buffeteau works on the development of new spectroscopic techniques based on the polarization modulation: Polarization modulated infrared reflection-absorption spectroscopy (PM-IRRAS) to characterize monolayers and ultrathin films deposited on metallic or dielectric substrates; Polarization modulated vibrational linear dichroism (PM-VLD) to investigate the molecular orientation in the plane of the substrates; Polarization modulated vibrational circular dichroism (PM-VCD) to determine the absolute configuration and/or conformation of chiral molecules and the secondary structures of proteins and polypeptides. His current research interests include the vibrational spectroscopy of organized molecular systems, the molecular orientation in photosensitive polymers and the studies of molecular and supramolecular chiralities.

N. Daugey works on the development of the Raman Optical Activity (ROA) to obtain complementary informations about the chirality of molecular and supramolecular systems, particularly in aqueous solutions. He realizes theoretical calculations to predict the VCD and ROA spectra of the investigated chiral molecules taking into account the possible conformers and the effect of the solvent.

 

Photonic Materials, Nonlinear Optics

Vincent Rodriguez
Vincent Rodriguez

Main research topics

  • Photonics and Functionalities
  • Experimental Developments and Applications

Skills and expertises

  • Second Harmonic Generation, hyper-Rayleigh, hyper-Raman, IR, Raman, linear and nonlinear optical microscopies, multimodal imaging
  • Optical materials: nanostructured materials, glass materials, poled materials, dyes and pigments, molecular NLO switches, SAMs, polymers, nanoparticles, ionic liquids, chiral materials (SHG-CD)…
  • Advanced linear and nonlinear modeling of optical media: films and interfaces, molecular orientation
  • Multipolar analysisof nanoclusters: second harmonic scattering and combined vibrational spectroscopies (IR, Raman and hyper-Raman)
 

Anisotropic Self-Assembly of Fluorophores, Nano-Photochemistry and Microscopy

André Del Guerzo
André Del Guerzo
Guillaume Raffy
Guillaume Raffy

Summary of Current Research

Research is performed at the Institut des Sciences Moléculaires (ISM) in the group Organic Nanostructures (NEO) on the self-assembly of fluorescent n-acenes into anisotropic nano-objects (nanofibers, nanoribbons, organogels) and composite soft materials. Fluorescence, photochemistry and self-assembly are studied at the nanoscale using fluorescence microscopy and spectroscopy. The microscopy setup is developed with an engineer, Guillaume Raffy. Collaborations are currently ongoing with laboratories in France, India, The Netherlands, Spain, UK, Taiwan and Japan.

 

Self-assembled Optical Metamaterials

Ashod Aradian
Ashod Aradian
Philippe Barois
Philippe Barois

 

Alexandre Baron
Alexandre Baron
Virginie Ponsinet
Virginie Ponsinet

Summary of Current Research

The team at CRPP develops several research projects on nanostructured materials for applications in optics at visible light frequencies in collaboration with nanochemists at the university of Bordeaux. Our approach is based on the combination of nano-chemistry and self-assembly techniques. Nanochemistry is able to assembly is a highly efficient process leading to the spontaneous organization of individual objects under the effect of complex pair interactions into two- or three-dimensional structures of various symmetries. The activities of our group encompass physical chemistry of colloids and polymers, experimentation in optics and numerical simulations of electromagnetic properties. Various complementary optical tools are implemented to extract the optical parameters of composite materials embedding plasmonic nanoparticles.

 
 
 

"Nano-fabrication to application” based on self- organization chemistry

...
Hirotaka Ihara
Hirotaka Ihara
Makoto Takafuji
Makoto Takafuji
Yutaka Kuwahara
Yukata Kuwahara

Summary of current research

Nano-Architecture by Self-Assembling Chemistry; Supramolecular Gel Systems; Fabrication of Functional, Hybrid, Core-Shell Materials; Applications for Separation Chemistry, Light Management Technology, Thermal Management Technology, and so on.

 

Development of Spherical Microbeads and their Applications

Shoji Nagaoka
Shoji Nagaoka
Naoya Ryu
Naoya Ryu
Maki Horikawa
Maki Horikawa

Summary of current research

We investigate the preparation and application of functional polymers and organic-inorganic hybrids as electrically/thermally conductive sheets, cosmetic materials, chemical-mechanical abrasive, gas barrier films, and light trapping/harvesting particles.

 

Photo-responsive organic materials by using azobenzene molecules as a molecular motor

Seiji Kurihara
Seiji Kurihara

Summary of current research

We investigate photo-functional materials, polymers and organic materials. Especially, we have been focussed on switching of structural color from the photonic crystals as well as photo-mechanical behavior of nano-sheets and nano-particles by the photoisomerization of azobenzene compounds introduced to the photonic crystals and the nano-sheets, nano-particles.

 
 

Molecular engineering of functional materials for photoinduced electron transfer and its applications

Hiroshi Imahori
Hiroshi Imahori

Summary of current research

We are interested in photoinduced charge separation and its applications. In particular, we focus on molecular artificial photosynthesis and solar energy conversion. We have developed versatile organic materials including fullerenes, carbon nanotubes, graphenes, and small molecules such as porphyrins and phthalocyanines for energy and biological applications.

 

Electrochemistry at the nanometer scales: Deposition of metals and Dissolution of semiconductors

Kazuhiro Fukami
Kazuhiro Fukami

Summary of current research

We investigate how to control electrochemical reactions in nanoporous electrodes. Porosification of silicon surface by electrodis solution and its filling by electrodeposition of metals are the two main projects of our group. Recently, we have started a new project related to the formation of chiral metal nanostructures by controlling electrochemistry at the nanometerscales.

 

Organic-Inorganic nanocomposites for energy conversion system

Takashi Sagawa
Takashi Sagawa

Summary of current research

We are interested in highly efficient energy conversion system from fundamental aspects of functional materials. We design new materials and processes for light-harvesting, photoelectron conversion, charge transport, storage, light-emitting, and/or other outputs. Particularly, studies are focused on the development of organic-inorganic nanocomposites for showing the above functions.We have developed nanoparticles, nanofibers, and/or nanorod arrays made of ZnO, TiO2, SrTiO3, poly(3-hexylthiophene), fullerene derivative, and so on.

 

Design and New Functions of Organic and Macromolecules

Michinori Suginome
Michinori Suginome

Summary of current research

Our major interest is to create new molecular functions by new molecular design and synthesis. Efforts have focused on use of the helical macromolecular scaffolds for highly enantioselective chiral catalysts and generation of circularly polarized light. We are also interested in new catalysis and reagents for organic synthesis on the basis of organoboron chemistry. New catalytic borylations including silaboration, carboboration, C-H borylation as well as an iterative cross-coupling system using masking group DAN have been developed.