MU-CHIEH CHANG2019-04-232019-04-2320190020-16691520-510Xhttps://scholars.lib.ntu.edu.tw/handle/123456789/405790© 2018 American Chemical Society. A previously reported cobalt complex featuring a tetraimidazolyl-substituted pyridine chelate is an active water oxidation electrocatalyst with moderate overpotential at pH 7. While this complex decomposes rapidly to a less-active species under electrocatalytic conditions, detailed electrochemical studies support the agency of an initial molecular catalyst. Cyclic voltammetry measurements confirm that the imidazolyl donors result in a more electron-rich Co center when compared with previous pyridine-based systems. The primary changes in electrocatalytic behavior of the present case are enhanced activity at lower pH and a marked dependence of catalytic activity on pH.en[SDGs]SDG7journal article10.1021/acstnorgchem.8b029422-s2.0-85060392936WOS:000456633400048http://dx.doi.org/10.1021/acs.inorgchem.8b0294256694331