Studies on the photochemical reactions catalyzed by metalloporphyrin complexes: II. Affect photosensitized reaction by aroundsubstituting group and axial coordination of metalloporphyrin complexes

Guo Yu Yang*, Qing Min Wang, Jie Zhang, Lian Xiang Yu, Xi Zhang Cao, Ji Qing Xu

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

The photosensitized reduction reaction of methylviologen was investigated by tetrakis [(4-trimethylamino) phenyl] metalloporphyrins [MeTPI, Me = H2, Zn(II), Ni(II), Cu(II), MN(III), Co(III)]. The kinetic parameter a, inductive time ti and initial rate ν0 in photosensitized reaction were applied to measure the photosensitivity of photosensitizers. Both substituting groups and axial coordinations of metalloporphyrin can exert a great influence on the photosensitivity of photosensitizers. The experimental results domonstrated that (1) zinc porphyrin is the best photosensitizers in the same series of porphyrins and metalloporphyrins; (2) the aromatic organic bases can increase the photosensitivity through axial ligation, on the contrary, the aliphatic amines can decrease the photosensitivity; (3) the aromatic organic bases with positive charge can increase the photosensitivity considerably.

Original languageEnglish
Pages (from-to)391
Number of pages1
JournalActa Chimica Sinica
Volume54
Issue number4
Publication statusPublished - Apr 1996
Externally publishedYes

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