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Self-Organized Hybrid Solids

Published online by Cambridge University Press:  01 February 2011

Joël J.E. Moreau
Affiliation:
Hétérochimie Moléculaire et Macromoléculaire (UMR-CNRS 5076), Ecole Normale Supérieure de Chimie de Montpellier, 8, rue de l'école normale, 34296 Montpellier Cedex 05 (France).
Luc Vellutini
Affiliation:
Hétérochimie Moléculaire et Macromoléculaire (UMR-CNRS 5076), Ecole Normale Supérieure de Chimie de Montpellier, 8, rue de l'école normale, 34296 Montpellier Cedex 05 (France).
Michel Wong Chi Man
Affiliation:
Hétérochimie Moléculaire et Macromoléculaire (UMR-CNRS 5076), Ecole Normale Supérieure de Chimie de Montpellier, 8, rue de l'école normale, 34296 Montpellier Cedex 05 (France).
Catherine Bied
Affiliation:
Hétérochimie Moléculaire et Macromoléculaire (UMR-CNRS 5076), Ecole Normale Supérieure de Chimie de Montpellier, 8, rue de l'école normale, 34296 Montpellier Cedex 05 (France).
Jean-Louis Bantignies
Affiliation:
Groupe de Dynamique des Phases Condensées (UMR-CNRS 5581), Université Montpellier II, Place Eugène Bataillon, 34095 Montpellier Cedex 05 (France)
Philippe Dieudonné
Affiliation:
Groupe de Dynamique des Phases Condensées (UMR-CNRS 5581), Université Montpellier II, Place Eugène Bataillon, 34095 Montpellier Cedex 05 (France)
Jean-Louis Sauvajol
Affiliation:
Groupe de Dynamique des Phases Condensées (UMR-CNRS 5581), Université Montpellier II, Place Eugène Bataillon, 34095 Montpellier Cedex 05 (France)
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Abstract

A new method has been developed for the synthesis of shaped-controlled bridged silsesquioxanes by the acid hydrolysis of urea-derived silylated precursors. This method is based on the ability of the hydrogen bonds of the urea groups to organize the molecules in a supramolecular architecture and provides after hydrolysis a new access to hybrid materials with controlled morphologies. A chirality transcription from a molecular precursor to a hybrid solid has been achieved. A right- and a left-handed helices have been obtained respectively from the chiral (R,R)- and the (S,S)-enantiomers of the diureido derivatives of trans-diaminocyclohexane. In a related way, a long range ordered hybrid solid has been obtained. Long carbon chain as spacer between the urea groups of the precursor affords lamellar hybrid silicas.

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Type
Research Article
Copyright
Copyright © Materials Research Society 2002

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