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. 1982 Aug;79(16):5111–5114. doi: 10.1073/pnas.79.16.5111

Environmental influences on the photooxidation of manganese by a zinc porphyrin sensitizer

Roland Wohlgemuth 1, John W Otvos 1, Melvin Calvin 1
PMCID: PMC346841  PMID: 16593221

Abstract

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 (PVS0), 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.

Keywords: artificial photosynthesis, charged membranes, surfactant manganese complex

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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