九州大学カーボンニュートラル・エネルギー国際研究所（I2CNER)触媒的物質変換研究部門 小江誠司教授及び松本崇弘助教らの研究グループは、2013年12月10日、『Dalton Transactions』のオンライン版に研究成果を発表しました。また、この研究成果は、2014年2月28日発行の『Dalton Transactions(Volume 43 Number 8)』誌に掲載されます。
■概 要
We propose a model for the water-oxidation and recovery systems of the oxygen-evolving complex (OEC) of the photosystem II (PSII) enzyme. The whole system is constructed from two catalytic cycles, conducted as a tandem reaction: (i) a water-oxidation loop uses cerium(IV) ammonium nitrate as an oxidant to activate a dimanganese complex for water-oxidation and thereby liberate a molecule of O2 and (ii) a recovery loop begins with photoinhibition of the dimanganese complex but then uses O2 to reactivate the manganese centre. The net result is a catalytic water-oxidation catalyst that can use self-generated O2 for recovery.
■論 文
Title: A model for the water-oxidation and recovery systems of the oxygen-evolving complex
Authors: Takeshi Yatabe, Mitsuhiro Kikkawa, Takahiro Matsumoto, Hidetaka Nakai, Kenji Kaneko and Seiji Ogo
DOI: 10.1039/C3DT52846D
Article first published online: 10 Dec 2013
