Title: Photoactivation Studies of Zinc Porphyrin-Myoglobin System and Its Application for Light-Chemical Energy Conversion
Authors: Chang, Chin-Hao
Hu, Yi-Ting
Lo, Chen-Fu
Luo, Liyang
Lin, Hung-Ming
Chang, Cheng-Hsiang
Lin, Ching-Yao
Diau, Eric Wei-Guang
Wu, Tung-Kung
Department of Biological Science and Technology
Department of Applied Chemistry
Institute of Molecular science
Keywords: photoelectrochemical energy conversion;zinc protoporphyrin;myoglobin;oxidoredox reaction;biosensitizer
Issue Date: 2011
Abstract: An artificial zinc porphyrin-myoglobin- based photo-chemical energy conversion system, consisting of ZnPP-Mb or ZnPE1-Mb as a photosensitizer, NADP(+) as an electron acceptor, and triethanolamine as an electron donor, has been constructed to mimic photosystem I. The photoirradiated product is able to reduce a single-electron acceptor protein cytochrome c, but cannot catalyze the two-electron reduction of acetaldehyde by alcohol dehydrogenase, thus demonstrating a single electron transfer mechanism. Furthermore, the artificial system can bifunctionally promote oxidoredox reactions, depending on the presence or absence of a sacrificial electron donor, thus suggesting its potential application in electrochemical regeneration steps involved in chemical transformation and/or energy conversion.
URI: http://hdl.handle.net/11536/15076
ISSN: 1449-2288
Volume: 7
Issue: 8
Begin Page: 1203
End Page: 1213
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