Photoinduced activation of molecular oxygen by various porphyrins,bis-porphyrins,phthalocyanines, pyridinoporphyrazins,and their metal derivatives |
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| Authors: | P. Maillard P. Krausz C. Giannotti S. Gaspard |
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| Affiliation: | Institut de Chimie des Substances Naturelles, CNRS, Gif-sur-Yvette 91190 France;Laboratoire des Pigments Végétaux et Substances Modèles, Ecole Normale Supérieure de St. Cloud, St. Cloud 92210 France |
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| Abstract: | Aerobic irradiation of tetraphenylporphyrins, phthalocyanines, tetra-t-butylphthalocyanines, tetracarboxylphthalocyanines, tetrapyridinoporphyrazins and some of their metal derivatives with visible light (λ > 420 nm) give singlet oxygen by energy transfer and oxygen superoxide by electron transfer, but some of their Cu, Zn of Pt derivatives are efficient quenchers for superoxide formation. |
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