期刊
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
卷 188, 期 2-3, 页码 200-206出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jphotochem.2006.12.013
关键词
magnetic fluid; zinc phthalocyanine; aluminum phthalocyanine; triplet quantum yields; triplet lifetime; fluorescence; photodegradation
The effect of magnetic fluid (NIF) on the photophysical and photochemical parameters of zinc and aluminum phthalocyanines are reported. The complexes studied are zinc (II) phthalocyanine (ZnPc), chloroaluminum phthalocyanine ((Cl)AlPc) and tetrasulfonated aluminum phthalocyanine ((Cl)AlTSPc). The parameters are studied in dimethylsulfoxide (DMSO) for all complexes and also in aqueous media for (Cl)AlTSPc. The triplet lifetimes for (Cl)AlTSPc and ZnPc decreased while the triplet quantum yields increased in the presence of ME For (Cl)AlPc, the triplet lifetimes were found to increase with decrease in laser energy while there was photoreduction to the Pc-3 species. Singlet oxygen and photodegradation quantum yields decreased in the presence of MF, suggesting quenching. (C) 2006 Elsevier B.V. All rights reserved.
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