Spectroscopic characterization of water-soluble cationic porphyrins in sol-gel silica matrices and coatings

被引：15

作者：

Dargiewicz, J ^{[1
]}

Makarska, M ^{[1
]}

Radzki, S ^{[1
]}

机构：

[1] Marie Curie Sklodowska Univ, Dept Chem, PL-20031 Lublin, Poland

来源：

COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS | 2002年 / 208卷 / 1-3期

关键词：

water-soluble cationic porphyrins; sol-gel matrices; sol-gel coatings; dimerization; dimerization constants;

D O I：

10.1016/S0927-7757(02)00142-5

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Silica aeorogels doped with different concentrations of water-soluble cationic porphyrins were synthesised by the sol-gel polymerisation of tetraethylorthosilicate (TEOS). Porphyrin dimer formation in sol-gel matrices was studied in the function of gelation time, over the porphyrin concentration range up to 10(-5) M. The deviation from the linearity of Beer-Lambert law starts with porphyrin concentration about 5 x 10(-6) M. The dimerization constants were estimated. The similar dependence could be observed for the aerogels and the solid thin films. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：159 / 165

页数：7

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