Fluorescence Probing of Composite Organic/Inorganic Transparent Matrices

被引：0

作者：

V. Bekiari

M. Ferrer

E. Stathatos

P. Lianos

机构：

[1] University of Patras,Engineering Science Department

来源：

Journal of Sol-Gel Science and Technology | 1998年 / 13卷

关键词：

sol-gel; composite; matrices; fluorescence; probing;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

Transparent composite SiO2/organic matrices have been made by the sol-gel method using tetramethoxysilane and either cetyltrimethylammoniumbromide (CTAB) or a polyethylene glycol oligomer (PEG-200) or a cationic polyelectrolyte. We have investigated conditions under which transparent xerogel matrices are possible and we have characterized them mainly by time-resolved fluorescence probing using stretched exponentials. CTAB creates a hydrophobic and PEG-200 a hydrophilic subphase in the matrix. An important property of these composite matrices is that they allow molecular diffusion contrary to matrices made in the absence of surfactants or polymers.

引用

页码：95 / 98

页数：3

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