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

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.