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International Journal Of Bilogical Sciences

.: Home > International Journal Of Bilogical Sciences > 2011 > Volume 7 Number 8 > Chin-Hao Chang1, Yi-Ting Hu1, Chen-Fu Lo2, Liyang Luo3, Hung-Ming Lin1, Cheng-Hsiang Chang1, Ching-Yao Lin2✉, Eric Wei-Guang Diau3✉, Tung-Kung Wu1✉

Photoactivation Studies of Zinc Porphyrin-Myoglobin System and Its Application for Light-Chemical Energy Conversion

Chin-Hao Chang1, Yi-Ting Hu1, Chen-Fu Lo2, Liyang Luo3, Hung-Ming Lin1, Cheng-Hsiang Chang1, Ching-Yao Lin2✉, Eric Wei-Guang Diau3✉, Tung-Kung Wu1✉
1. Department of Biological Science and Technology, National Chiao Tung University, 30068, Hsin-Chu, Taiwan, Republic of China 2. Department of Applied Chemistry, National Chi Nan University, Puli, Nantou County, Taiwan, Republic of China 3. Department of Applied Chemistry and Institute of Molecular Science, National Chiao Tung University, Hsin-Chu, Taiwan, Republic of China
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.

Keywords :
photoelectrochemical energy conversion, zinc protoporphyrin, myoglobin, oxidoredox reaction, biosensitizer

Date Deposited : 08 Apr 2015 12:49

Last Modified : 08 Apr 2015 12:49

Official URL: http://www.ijbs.com/ms/archive

Volume 7, Number 8, - 2011 , ISSN 1545-1003

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