Heteroaggregation and photoelectric conversion of porphyrins on a nanostructured TiO2 electrode

被引：11

作者：

Deng, HH ^{[1
]}

Lu, ZH ^{[1
]}

机构：

[1] Southeast Univ, Natl Lab Mol & Biomol Elect, Nanjing 210096, Peoples R China

来源：

SUPRAMOLECULAR SCIENCE | 1998年 / 5卷 / 5-6期

基金：

中国国家自然科学基金;

关键词：

charge-transfer interaction; cosensitization; heteroaggregation;

D O I：

10.1016/S0968-5677(98)00099-6

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The cosensitization of a nanostructured titanium dioxide (TiO2) electrode with tetrasulphonated porphyrins (MTsPP; M = Zn, H-2) is reported. Cosensitization greatly enhances the photocurrent response at the Q-band of H2TsPP and markedly decreases the photocurrent response in the Soret band of ZnTsPP. The photoelectric behavior of the cosensitized TiO2 electrode is attributed to the formation of heteroaggregates between H2TsPP and ZnTsPP molecules on the positively charged TiO2 electrode by charge-transfer interaction, resulting in the decrease of the surface concentration of the H2TsPP dimer and the presence of the low-lying charge-transfer state. (C) 1998 Elsevier Science Limited. All rights reserved.

引用

页码：669 / 674

页数：6

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