title: A Water-Soluble Copper-Polypyridine Complex as a Homogeneous Catalyst for both Photo-Induced and Electrocatalytic O2 Evolution.
abstract: The water-soluble polypyridine copper complex [Cu(F3TPA)(ClO4)2] [1; F3TPA=tris(2-fluoro-6-pyridylmethyl)amine] catalyzes water oxidation in a pH 8.5 borate buffer at a relatively low overpotential of 610 mV. Assisted by photosensitizer and an electron acceptor, 1 also exhibits activity as a homogeneous catalyst for photo-induced O2 evolution with a maximum turnover frequency (TOF) of (1.58 ± 0.03) × 10(-1) s(-1) and a maximum turnover number (TON) of 11.61 ± 0.23. In comparison, the reference [Cu(TPA)(ClO4)2] [TPA=tris(2-pyridylmethyl)amine] displayed almost no activity under either set of conditions, implying the crucial role of the ligand in determining the behavior of the catalyst. Experimental evidence indicate the molecular catalytic nature of 1, leading to a potentially practical strategy to apply the copper complex in a photoelectrochemical device for water oxidation.
authors.affiliation: Key Laboratory of Macromolecular Science of Shaanxi Province, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an, 710119 (P. R. China).|School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an, 710119, P. R. China.
authors.forename: Rui-Juan
authors.initials: RJ
authors.lastname: Xiang
authors.affiliation: Key Laboratory of Macromolecular Science of Shaanxi Province, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an, 710119 (P. R. China). hongyan-wang@snnu.edu.cn.|School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an, 710119, P. R. China. hongyan-wang@snnu.edu.cn.
authors.forename: Hong-Yan
authors.initials: HY
authors.lastname: Wang
authors.affiliation: Key Laboratory of Macromolecular Science of Shaanxi Province, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an, 710119 (P. R. China).|School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an, 710119, P. R. China.
authors.forename: Zhi-Juan
authors.initials: ZJ
authors.lastname: Xin
authors.affiliation: College of Chemistry & Materials Science, Northwest University, Xi'an, 710127, P. R. China.
authors.forename: Cheng-Bo
authors.initials: CB
authors.lastname: Li
authors.affiliation: School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an, 710119, P. R. China.
authors.forename: Ya-Xing
authors.initials: YX
authors.lastname: Lu
authors.affiliation: Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China.
authors.forename: Xue-Wang
authors.initials: XW
authors.lastname: Gao
authors.affiliation: School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an, 710119, P. R. China.
authors.forename: Hua-Ming
authors.initials: HM
authors.lastname: Sun
authors.affiliation: School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an, 710119, P. R. China. ruicao@ruc.edu.cn.|Department of Chemistry, Renmin University of China, Beijing, 100872, P. R. China. ruicao@ruc.edu.cn.
authors.forename: Rui
authors.initials: R
authors.lastname: Cao
keywords: copper; electrocatalysis; homogeneous catalysis; photochemistry; water oxidation