Acta Chimica Sinica ›› 1990, Vol. 48 ›› Issue (5): 483-488. Previous Articles     Next Articles

Original Articles

竹红菌甲素光敏氧化反应机制

第五振军;蒋丽金;张曼华   

  1. 中国科学院感光化学研究所
  • 发布日期:1990-05-15

The mechanism of hypocrellin a sensitized photooxidation reaction

DI WUZHENJUN;JIANG LIJIN;ZHANG MANHUA   

  • Published:1990-05-15

In the primary reaction of hypocrellin A sensitized photooxidn., 1O2, O2. and H2O2 were formed, and the yield of O2. increased with the addition of a reducing substrate (such as 5-hydroxytryptophan, tryptophan, histidine, methionine and lysine). 1O2, O2. and H2O2 were resp. formed through energy transfer between triplet hypocrellin A and grout state O and the reduction of ground state O by hypocrellin A anions. Some free radicals were produced because of the weak H abstraction power of hypocrellin A, which promotes the interconversion of different forms of activated O species. Therefore, it was considered that both activated O species and free radicals were involved in the hypocrellin A sensitized photooxidn.

Key words: REACTION MECHANISM, ENERGY TRANSFER, PHOTOSENSITIZATION OXIDATION, HYPOCRELLA BAMBUSAE, SINGLE ELECTRON TRANSFER REACTION

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