Synthesis and Spectroscopy of Tpps-Doped Silica Gels by the Sol-Gel Process

被引：29

作者：

Kamitani, Kazutaka ^{[1
]}

Uo, Motohiro ^{[1
]}

Inoue, Hiroyuki ^{[1
]}

Makishima, Akio ^{[1
]}

机构：

[1] Univ Tokyo, Fac Engn, Dept Mat Sci, Bunkyo Ku, Tokyo 113, Japan

来源：

JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY | 1993年 / 1卷 / 01期

关键词：

Free-base TPPS; silica gels; NaOH; monocation; spectroscopy;

D O I：

10.1007/BF00486432

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：

Tetraphenylporphinetetrasulfonic acid (TPPS), which is well known as a photochemical hole-burning (PHB) dye, was incorporated in silica gels obtained by the sol-gel process from tetramethoxysilane (TMOS). The form of TPPS must be free base (H2P), which exists in basic condition, to be active in PHB. To obtain transparent and higher density silica gels doped with free-base TPPS, two-step hydrolysis processes using solutions containing NaOH were developed, and the gels having bulk density of about 1.5 g/cm(3) were synthesized. The form of TPPS in the gels was investigated by measuring the absorption and luminescence spectra, and it was found that in the silica gels almost all the TPPS retained free-base form at the molar ratio of NaOH/TMOS above 10(-3).

引用

页码：85 / 92

页数：8

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