Photochemical studies of tetra-2,3-pyridinoporphyrazines

被引：267

作者：

Seotsanyana-Mokhosi, I ^{[1
]}

Kuznetsova, N ^{[1
]}

Nyokong, T ^{[1
]}

机构：

[1] Rhodes Univ, Dept Chem, ZA-6139 Grahamstown, South Africa

来源：

JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY | 2001年 / 140卷 / 03期

关键词：

pyridinoporphyrazine; phthalocyanine; sensitizer; singlet oxygen; photobleaching;

D O I：

10.1016/S1010-6030(01)00427-0

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：

Tetra-2,3-pyridinoporphyrazines and the corresponding water-soluble N, N', N ", N " ' -tetramethyl-tetra-2,3-pyridinoporphyrazine complexes, containing central metal atoms; M = Ce, Sn, Si and Zn, were synthesized and their photochemical properties were investigated. The reductive quenching of pyridinoporphyrazines excited states, enhanced relative to phthalocyanines, was considered as the first photochemical step of dyes phototransformation in dimethylformamide (DMF) and dimethylsulfoxide (DMSO) solutions under irradiation with visible light. Efficiency of singlet oxygen photosensitization decreases significantly in the row phthalocyanines, unquaternized, quaternized tetra-2,3-pyridinoporphyrazine metallocomplexes. (C) 2001 Elsevier Science B.V. All rights reserved.

引用

页码：215 / 222

页数：8