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Chemical and Photochemical Water Oxidation Mediated by an Efficient Single‐Site Ruthenium Catalyst
Author(s) -
AbdelMagied Ahmed F.,
Shatskiy Andrey,
Liao RongZhen,
Laine Tanja M.,
Arafa Wael A. A.,
Siegbahn Per E. M.,
Kärkäs Markus D.,
Åkermark Björn,
Johnston Eric V.
Publication year - 2016
Publication title -
chemsuschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.412
H-Index - 157
eISSN - 1864-564X
pISSN - 1864-5631
DOI - 10.1002/cssc.201601171
Subject(s) - ruthenium , catalysis , artificial photosynthesis , redox , chemistry , photochemistry , ligand (biochemistry) , water splitting , catalytic cycle , bipyridine , benzimidazole , photocatalysis , inorganic chemistry , organic chemistry , biochemistry , receptor , crystal structure
Water oxidation is a fundamental step in artificial photosynthesis for solar fuels production. In this study, we report a single‐site Ru‐based water oxidation catalyst, housing a dicarboxylate‐benzimidazole ligand, that mediates both chemical and light‐driven oxidation of water efficiently under neutral conditions. The importance of the incorporation of the negatively charged ligand framework is manifested in the low redox potentials of the developed complex, which allows water oxidation to be driven by the mild one‐electron oxidant [Ru(bpy) 3 ] 3+ (bpy=2,2’‐bipyridine). Furthermore, combined experimental and DFT studies provide insight into the mechanistic details of the catalytic cycle.