Synthesis of hybrid silicates containing porphyrins incorporated by a sol-gel process and their properties

被引：26

作者：

Biazzotto, JC

Sacco, HC

Ciuffi, KJ

Neri, CR

Ferreira, AG

Iamamoto, Y

Serra, OA

机构：

[1] Univ Sao Paulo, FFCLRP, Dept Quim, Rare Earth Lab, BR-14040901 Ribeirao Preto, Brazil

[2] UNESP, Inst Quim, Araraquara, Brazil

[3] Univ Franca, Dept Quim, Franca, SP, Brazil

[4] Univ Fed Sao Carlos, Dept Quim, BR-13560 Sao Carlos, SP, Brazil

来源：

JOURNAL OF NON-CRYSTALLINE SOLIDS | 1999年 / 247卷

基金：

巴西圣保罗研究基金会;

关键词：

D O I：

10.1016/S0022-3093(99)00050-2

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：

Porphyrin was incorporated in a silicate network, via a covalent bond, by grafting a functional group with 3-aminopropyltriethoxysilane, using a sol-gel process. We have carried out the synthesis and measured the absorption spectra, nuclear magnetic resonance spectra, infrared (IR) spectra, luminescence spectra and lifetime of these hybrid silicates, porphyrinosilicas. These samples contained the following free-base porphyrins: meso-tetrakis-p-chlorobenzoylporphyrin, meso-tetrakis-2,6-dichloro-3-chlorosulfonylphenylporphyrin. The obtained porphyrinosilicas have similar absorption and luminescence spectra to the free base porphyrins in solution. IR spectra confirm the formation of monomeric species. Lifetime measurement for porphyrinosilica reveals that 32% +/- 2% of porphyrin is covalently bonded to the silica network. (C) 1999 Elsevier Science B.V. All rights reserved.

引用

页码：134 / 140

页数：7

共 19 条

[1]

[Anonymous], 1983, EXCITED STATE LIFETI

[2] Sol-gel hosts doped with porphyrin derivatives .11. Site selection spectra and vibronic analysis [J].