Designed synthesis of nanostructured siloxane-organic hybrids from amphiphilic silicon-based precursors

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Abstract

This paper reports on recent progress in the synthesis of nanostructured siloxane-organic hybrids based on the self-assembly of amphiphilic silicon-based precursors. A variety of ordered hybrid materials have been obtained by molecular design of the precursors. Alkoxysilanes and chlorosilanes with covalently attached hydrophobic organic tails are hydrolyzed to form amphiphilic molecules containing silanol groups, leading to the formation of layered (lamellar) structures. Transparent and oriented thin films of lamellar hybrids were prepared by the reaction in the presence of tetraalkoxysilane. In addition, the design of molecules having alkyl chains and large oligosiloxane heads led to the formation of mesophases consisting of cylindrical assemblies, providing a direct pathway to ordered porous silica. The synthesis, structural features, and formation processes of these hybrid mesostructures are discussed.

Original languageEnglish
Pages (from-to)53-63
Number of pages11
JournalChemical Record
Volume6
Issue number2
DOIs
Publication statusPublished - 2006 May 29

Keywords

  • Nanostructures
  • Organic-inorganic hybrid composites
  • Organoalkoxysilane
  • Porous silica
  • Self-assembly

ASJC Scopus subject areas

  • Chemistry(all)
  • Biochemistry
  • Chemical Engineering(all)
  • Materials Chemistry

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