title: Photochemical Hydrogen Generation Initiated by Oxidative Quenching of the Excited Ru(bpy)3 (2+) * by a Bio-Inspired [2Fe2S] Complex.
abstract: A diiron dithiolate complex 1 containing 1,8-naphthalic anhydride bridge was prepared, which possessed the lowest reduction potential for the synthetic diiron complexes modeled on the active site of [FeFe] hydrogenase reported so far. For the first time, oxidative quenching of the excited Ru(bpy)3 (2+) * through electron transfer to a bio-inspired [2Fe2S] complex was corroborated. Hydrogen evolution, driven by visible light, was successfully observed for a three-component system, consisting of Ru(bpy)3 (2+) , complex 1, and EDTA as electron donor in aqueous/organic media. These results provide a basis and also opportunity to develop a photo water splitting system employing Fe-based catalysts without sacrificial electron donors.
authors.affiliation: School of Chemical Engineering & Technology, Harbin Institute of Technology, 150001, Harbin, P. R. China. yongna@hit.edu.cn.
authors.forename: Yong
authors.initials: Y
authors.lastname: Na
authors.affiliation: School of Chemical Engineering & Technology, Harbin Institute of Technology, 150001, Harbin, P. R. China.
authors.forename: Peicheng
authors.initials: P
authors.lastname: Wei
authors.affiliation: School of Chemical Engineering & Technology, Harbin Institute of Technology, 150001, Harbin, P. R. China.
authors.forename: Li
authors.initials: L
authors.lastname: Zhou
keywords: artificial photosynthesis; electron transfer; hydrogenase; iron catalyst; water splitting