Acta Chimica Sinica ›› 1996, Vol. 54 ›› Issue (4): 385-391. Previous Articles     Next Articles

Original Articles

金属卟啉化合物光谱化反应研究 Ⅱ. 周边取代与轴向配位对金属卟啉光敏化反应的影响

杨国昱;王清华;张杰;于连香;曹锡章;徐吉庆   

  1. 吉林大学化学系
  • 出版日期:1996-04-15 发布日期:1996-04-15

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

WANG QINGHUA;ZHANG JIE;YU LIANXIANG;CAO XIZHANG;XU JIQING   

  • Online:1996-04-15 Published:1996-04-15

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 v0 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.

Key words: PHOTOSENSITIZATION, ZINC COMPLEX, COPPER COMPLEX, PHOTOCATALYSIS, COBALT COMPLEX, NICKEL COMPLEX, METHYL VIOLOGEN, PORPHYRIN, AXIAL LIGANDS

CLC Number: