Stability of organic compounds on the oxygen-evolving center of photosystem II and manganese oxide water oxidation catalysts

Toru Hayashi; Akira Yamaguchi; Kazuhito Hashimoto; Ryuhei Nakamura

doi:10.1039/c6cc07092b

Stability of organic compounds on the oxygen-evolving center of photosystem II and manganese oxide water oxidation catalysts

Chem Commun (Camb). 2016 Nov 22;52(95):13760-13763. doi: 10.1039/c6cc07092b.

Authors

Toru Hayashi¹, Akira Yamaguchi², Kazuhito Hashimoto³, Ryuhei Nakamura²

Affiliations

¹ Department of Applied Chemistry, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan.
² Biofunctional Catalyst Research Team, RIKEN Center for Sustainable Resource Science (CSRS), 2-1 Hirosawa, Wako, Saitama 351-0198, Japan. ryuhei.nakamura@riken.jp.
³ National Institute for Materials Science (NIMS), 1-2-1 Sengen, Tsukuba, Ibaraki 305-0047, Japan.

PMID: 27805189
DOI: 10.1039/c6cc07092b

Abstract

Surrounding organic residues are indispensable for the high water oxidation activity of the Mn₄ cluster in photosystem II. Here, the stability of organic compounds on synthetic Mn oxides was analyzed using inlet electrochemical mass spectroscopy. Carboxyl groups, which are the most abundant residues around the Mn₄ cluster, were found to stably facilitate the oxygen evolution reaction.