环境因素对锌卟啉敏化剂引发的锰的光氧化作用的影响。
Environmental influences on the photooxidation of manganese by a zinc porphyrin sensitizer.
机构信息
Lawrence Berkeley Laboratory and Department of Chemistry, University of California, Berkeley, California 94720.
出版信息
Proc Natl Acad Sci U S A. 1982 Aug;79(16):5111-4. doi: 10.1073/pnas.79.16.5111.
The photosensitized oxidation of a membrane-bound Mn(III) tetrapyridylporphyrin derivative by a Zn tetrapyridylporphyrin derivative, which is confined to the membrane, has been achieved in negatively charged membranes consisting of phosphatidylglycerol or phosphatidic acid. At the same time, the zwitterionic electron acceptor, propylviologen sulfonate (PVS(0)), is reduced in the aqueous phase. The same reaction cannot be obtained with zwitterionic or cationic membranes, nor does this photosensitized reaction take place in a homogeneous solution with Mn(III) tetrapyridylporphyrin and Zn tetrapyridylporphyrin. These results show that the organization of donor, sensitizer, and acceptor at an appropriately selected interface allows reactions that would not occur in homogeneous solutions.
在由负电荷的磷脂酰甘油或磷脂酸组成的膜中，已实现了一种膜结合的 Mn(III)四吡咯卟啉衍生物在 Zn 四吡咯卟啉衍生物的存在下被敏化氧化，该衍生物被限制在膜内。同时，两性离子电子受体丙二烯基磺酸盐（PVS(0)）在水相中被还原。在两性离子或阳离子膜中不能获得相同的反应，也不会在含有 Mn(III)四吡咯卟啉和 Zn 四吡咯卟啉的均相溶液中发生这种敏化反应。这些结果表明，在适当选择的界面上组织供体、敏化剂和受体可以允许在均相溶液中不会发生的反应。
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