Nanocomposites from natural templates based on fatty compound-functionalised siloxanes

This work describes the synthesis of new, environmentally friendly, robust and biocompatible organic-inorganic hybrid materials based on fatty acid methyl ester-functionalised silica. The hydrosilylation reaction was used to covalently anchor 10-undecenoic methyl ester to a cyclic and acyclic backbo...

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Bibliographic Details
Published in:Journal of materials chemistry 2009-01, Vol.19 (33), p.6004-6014
Main Authors: EL KADIB, Abdelkrim, KATIR, Nadia, MARCOTTE, Nathalie, MOLVINGER, Karine, CASTEL, Annie, RIVIERE, Pierre, BRUNEL, Daniel
Format: Article
Language:English
Subjects:
Chemical Sciences
Chemistry
Condensed matter: structure, mechanical and thermal properties
Cross-disciplinary physics: materials science
rheology
Exact sciences and technology
General and physical chemistry
General, apparatus
Material chemistry
Materials science
Methods of nanofabrication
Physics
Self-assembly
Surface physical chemistry
Thermal expansion
thermomechanical effects and density
Thermal properties of condensed matter
Thermal properties of crystalline solids
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Summary:This work describes the synthesis of new, environmentally friendly, robust and biocompatible organic-inorganic hybrid materials based on fatty acid methyl ester-functionalised silica. The hydrosilylation reaction was used to covalently anchor 10-undecenoic methyl ester to a cyclic and acyclic backbone based on methylsiloxane repeating units. These as-synthesised amphiphilic precursors exhibit a self-assembling ability as shown by the formation of nanoobjects evidenced by fluorescence experiments, transmission electronic microscopy (TEM) and dynamic light scattering (DLS) analyses. Spherical nanocomposites featuring unprecedented flexibility, hydrophobicity and improved hydrolytic and thermal properties were built using sol-gel condensation of tetraethoxysilane (TEOS) controlled by these new self-assembling nanobuilding blocks. The textural characteristics and the morphology of these composite materials were dependent on the type of catalyst (acidic or basic) and the nature of the solvent (polar or apolar) used during the sol-gel polymerisation. This strategy opens new opportunities for advanced applications in various fields of nanochemistry and biomaterials.
ISSN:0959-9428
1364-5501
DOI:10.1039/b906448f