Photophysical properties of amphiphilic porphyrins in different media

被引：23

作者：

He, XZ ^{[1
]}

Zhou, YL ^{[1
]}

Wang, LX ^{[1
]}

Li, TK ^{[1
]}

Zhang, MH ^{[1
]}

Shen, T ^{[1
]}

机构：

[1] Acad Sinica, Inst Photog Chem, Beijing 100101, Peoples R China

来源：

DYES AND PIGMENTS | 1998年 / 39卷 / 03期

关键词：

amphiphilic porphyrins; aggregating; biexponential fluorescence decay;

D O I：

10.1016/S0143-7208(98)00007-2

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Photophysical properties (absorption spectra, fluorescence spectra, lifetimes and quantum yields) have been studied for several amphiphilic porphyrins bearing hydrophilic pyridinium and hydrophobic long-chain alkyl groups in different media. These amphiphilic porphyrins are characterized by reduced fluorescence quantum yields, aggregating appreciable in nonpolar solvents and biexponential fluorescence decay. The observed biexponential fluorescence decay of these porphyrin derivatives can be interpreted in terms of mixing of the SI and a CT state in which an electron is transferred from the porphyrin cole to the electron-deficient pyridinium group. (C) 1998 Elsevier Science Ltd. All rights reserved.

引用

页码：173 / 182

页数：10

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