Fluorescence probing of composite organic/inorganic transparent matrices

被引：10

作者：

Bekiari, V ^{[1
]}

Ferrer, M ^{[1
]}

Stathatos, E ^{[1
]}

Lianos, P ^{[1
]}

机构：

[1] Univ Patras, Dept Engn Sci, Patras 26500, Greece

来源：

JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY | 1998年 / 13卷 / 1-3期

关键词：

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

D O I：

10.1023/A:1008659523510

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

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：4

共 11 条

[1] LIQUID-CRYSTALLINE PHASES AS TEMPLATES FOR THE SYNTHESIS OF MESOPOROUS SILICA [J].