Issue 9, 2003
From the journal:

Journal of Materials Chemistry

Facetted hollow silica vesicles made by templating catanionic surfactant vesicles

Didier Lootens,ab   Claire Vautrin,c   Henri Van Damme*a  and  Thomas Zembc  

* Corresponding authors

a ESPCI, UMR 7615 ESPCI-CNRS-UPMC, 10 rue Vauquelin, Paris cedex 05, France
E-mail: henri.vandamme@espci.fr

b Institut Français du Pétrole, 1 et 4 avenue de Bois Préau, Rueil Malmaison cedex, France

c Service de Chimie Moléculaire, CEA, CEN Saclay, France

Abstract

Large facetted hollow silica vesicles were synthesized by directed growth of silica on equilibrium icosahedrally facetted catanionic vesicles, made from cetyltrimethylammonium hydroxide/myristic acid surfactant bilayers. Three critical parameters were identified: (i) the surface charge of the vesicles; (ii) the rate of silica deposition by tetraethoxysilane (TEOS) hydrolysis and (iii) the rate of concomitant ethanol production. All three factors are pH-dependent. Thus, depending on the reaction pH and TEOS concentration, the silica vesicles have been shown to be either facetted, rounded or damaged, in a process controlled by the template.

Graphical abstract: Facetted hollow silica vesicles made by templating catanionic surfactant vesicles

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Article information

DOI
https://doi.org/10.1039/B305808P
Article type
Communication
Submitted
22 May 2003
Accepted
17 Jul 2003
First published
25 Jul 2003

J. Mater. Chem., 2003,13, 2072-2074

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Facetted hollow silica vesicles made by templating catanionic surfactant vesicles

D. Lootens, C. Vautrin, H. Van Damme and T. Zemb, J. Mater. Chem., 2003, 13, 2072 DOI: 10.1039/B305808P

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