Supra-Molecular Approach to Composite Materials for Advanced Technologies

An Indo-French project funded by IFCPAR / CEFIPRA

India P.I. : Uday Maitra, Indian Institute of Science, Bangalore
French P.I. : André Del Guerzo, Institut des Sciences Moléculaires, Université Bordeaux 1
French Partners : Cyril Aymonier, ICMCB, Bordeaux and Pierre Terech, CEA, Grenoble

Composite and hybrid materials result from two worlds with complementary properties. The combination of organic and inorganic components, or two different families of molecules, is a challenge that is addressed using supramolecular interactions. Novel gelators, chelating and bridging ligands are specifically designed for intimate intermixing and structuring into gels of organic self-assembled nanofibers, inorganic nanoparticles and/or lanthanide salts. Besides the synthetic effort performed both at the IISc-Bangalore and at the ISM-Bordeaux, original solvent processing techniques using supercritical fluids are developed at the ICMCB-Bordeaux to form desolvated aerogels and nanoparticles. Furthermore, our unique expertise in neutron and X-ray scattering (CEA-Grenoble) is used to elucidate their molecular and supramolecular organization. The interaction of the material with light, revealed at the nanoscale by confocal fluorescence microscopy (ISM), serves a handle for the studies and could result in potential applications.

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Figure : A composite material combining an organic organogelator (DDOA) and ZnO nanoparticles (see J. Mater. Chem. 2011)

Publications of the previous collaborative project :

1. “Self-assembled composite nano-materials exploiting a thermo reversible n-acene fibrillar scaffold and organic-capped ZnO nanoparticles”, Das, Rajat K., Bhat, Shreedhar ; Banerjee, Supratim ; Aymonier, Cyril ; Loppinet-Serani, Anne ; Terech, Pierre ; Maitra, Uday ; Raffy, Guillaume ; Desvergne, Jean-Pierre ; Del Guerzo, Andre, J. Mater. Chem. 2011, 21, 2740-2750.

2. "Structural Relationships in 2,3-Bis-n-decyloxyanthracene and 12-Hydroxystearic Acid Molecular Gels and Aerogels Processed in Supercritical CO2", Pierre Terech, Cyril Aymonier, Anne Loppinet-Serani, Shreedhar Bhat, Supratim Banerjee, Rajat Das, Uday Maitra, Andre´ Del Guerzo, and Jean-Pierre Desvergne, J. Phys. Chem. B 2010, 114, 11409–11419.

3. “Spectroscopic, Microscopic and first Rheological investigations in Charge-transfer interaction induced Organogels”, Rajat K. Das, Supratim Banerjee, Guillaume Raffy, André Del Guerzo, Jean-Pierre Desvergne and Uday Maitra, J. Mater. Chem. 2010, 20, 7227-7235.

4. “Hybrid Materials Combining Photoactive 2,3-Didecyloxy Anthracene Physical Gels and Gold Nanoparticles”, N.M. Sangeetha, S. Bhat, G. Raffy, C. Belin, A. Loppinet-Serani, C. Aymonier, P. Terech, Uday Maitra, J.-P. Desvergne, A. Del Guerzo, Chem. Mater. 2009, 21, 3424-3432.

5. Perfluoroalkyl bile esters : a new class of efficient gelators of organic and aqueous–organic media, Supratim Banerjee, V. M. Vidya, A. J. Savyasachi and Uday Maitra, J. Mater. Chem. 2011, DOI : 10.1039/c1jm11912e.

6. “Facially Amphiphilic Thiol Capped Gold and Silver Nanoparticles”, Shreedhar Bhat and Uday Maitra, J. Chem. Sci. 2008, 120, 1-7.


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