Immobilization of Photosynthetic Reaction Center Complexes onto a Hydroquinonethiol-Modified Gold Electrode

The immobilization of reaction center complexes onto a gold electrode was attempted through the binding affinity between reaction centers and hydroquinone-2-thiol adsorbed on an electrode surface. The largest anodic photoresponse by immobilized reaction centers was observed using ubiquinone B-deplet...

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Bibliographic Details
Published in:Bulletin of the Chemical Society of Japan 1999-10, Vol.72 (10), p.2169-2175
Main Authors: Matsumoto, Kiyoharu, Nomura, Kazuhiro, Tohnai, Yasunari, Fujioka, Shuji, Wada, Masanori, Erabi, Tatsuo
Format: Article
Language:English
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Summary:The immobilization of reaction center complexes onto a gold electrode was attempted through the binding affinity between reaction centers and hydroquinone-2-thiol adsorbed on an electrode surface. The largest anodic photoresponse by immobilized reaction centers was observed using ubiquinone B-depleted reaction centers and with the pre-oxidation of adsorbed hydroquinone-2-thiol, indicating that the degree of the orientation of reaction center particles increases through the binding affinity between vacant QB-sites in the particles and p-benzoquinonethiol. This anodic photoresponse could be elongated over a period of 5 h (2500 cycles of turnover number) by adding cytochrome c2 into the electrolytic solution.
ISSN:0009-2673
1348-0634
DOI:10.1246/bcsj.72.2169