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Synthesis of nanomaterials in Highly Swollen Liquid Crystals

Published online by Cambridge University Press:  01 February 2011

Myriam Tokumoto ,
Geetarani Surendran ,
Eduardo Pena dos Santos ,
Patricia Kooyman ,
Hynd Remita ,
Laurence Ramos  and
Eric Prouzet
Myriam Tokumoto
Affiliation:
Institut Européen des Membranes, UMR 5635-CNRS, CNRS, 1919 route de Mende, F-34293 Montpellier Cedex 5 (FRANCE), [email protected]
Geetarani Surendran
Affiliation:
Institut Européen des Membranes, UMR 5635-CNRS, CNRS, 1919 route de Mende, F-34293 Montpellier Cedex 5 (FRANCE), [email protected] Laboratoire de Chimie Physique, Bât. 349, UMR 8000-CNRS, Université Paris XI, F- 91400 Orsay Cedex(FRANCE), [email protected]
Eduardo Pena dos Santos
Affiliation:
Institut Européen des Membranes, UMR 5635-CNRS, CNRS, 1919 route de Mende, F-34293 Montpellier Cedex 5 (FRANCE), [email protected]
Patricia Kooyman
Affiliation:
National Centre for HREM, Delft University of Technology, Rotterdamesweg 137, 2628 AL Delft, (The NETHERLANDS), [email protected]
Hynd Remita
Affiliation:
Laboratoire de Chimie Physique, Bât. 349, UMR 8000-CNRS, Université Paris XI, F- 91400 Orsay Cedex(FRANCE), [email protected]
Laurence Ramos
Affiliation:
Groupe de Dynamique des Phases Condensées, UMR 5581-CNRS, Université Montpellier II, F-34095 Montpellier Cedex 05, (FRANCE), [email protected]
Eric Prouzet
Affiliation:
Institut Européen des Membranes, UMR 5635-CNRS, CNRS, 1919 route de Mende, F-34293 Montpellier Cedex 5 (FRANCE), [email protected] Laboratoire pour l'Utlisation du Rayonnement Electromagnétique (LURE), UMR 130-CNRS, Université Paris-Sud, F-91402 Orsay Cedex(FRANCE), [email protected]
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Abstract

Highly Swollen Liquid Crystals (SLC) that exhibit hexagonal, cubic or lamellar symmetry have been demonstrated to form a new type of soft nanoreactors. These mesophases are formed by a quaternary mixture combining a surfactant, an aqueous solution of inorganic salt, cyclohexane as a hydrophobic swelling solvent and pentanol-1 as a co-surfactant. Unlike previous works that used a “nanocasting” approach in a binary liquid crystal, the composition of these SLC allows syntheses to be proceeded inside the aqueous and/or the organic phase. Therefore inorganic, metallic or organic materials can be prepared and the geometry of the SLC controls the final shape of the prepared by this approach. We will describe various materials that were obtained by different processes in these SLCs: rod-like nanoaggregates of metal nanoparticles were synthesized by chemical reduction in the aqueous part of the hexagonal mesophase, microrods of zirconia were obtained by slow crystallogenesis from hydrated zirconium oxychloride, mesoporous zirconia was prepared by a faster hydrolysis and polymer micro- and nano-fibers were obtained in the organic phase by photopolymerization or radiolysis. We will show how the changements in the SLC structure can modify the structure of the compounds synthesized inside and that this system constitutes a quite universal medium for the preparation of nanomaterials or nanostructured systems.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 847: Symposium EE – Organic/Inorganic Hybrid Materials , 2004 , EE11.1
Copyright
Copyright © Materials Research Society 2005

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