An artificial [FeFe]-hydrogenase mimic with organic chromophore-linked thiolate bridges for the photochemical production of hydrogen

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• 作者：Shang Gao ; Wei-Yi Zhang ; Qian Duan ; Qing-Cheng Liang ; Da-Yong Jiang…
• 关键词：Hydrogenase ; Enzyme mimic ; Photocatalysis ; Intramolecular electron transfer ; Hydrogen evolution
• 刊名：Chemical Papers
• 出版年：2017
• 出版时间：March 2017
• 年：2017
• 卷：71
• 期：3
• 页码：617-625
• 全文大小：
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Chemistry/Food Science, general; Industrial Chemistry/Chemical Engineering; Biochemistry, general; Medicinal Chemistry; Materials Science, general; Biotechnology;
• 出版者：Springer International Publishing
• ISSN：1336-9075
• 卷排序：71

文摘

An artificial [FeFe]-hydrogenase ([FeFe]-H₂ase) mimic 3II, consisting of dual organic chromophores covalently assembled to the [Fe₂S₂] active site, was constructed for light-driven hydrogen evolution. The structural conformation of synthetic photocatalyst was characterized crystallographically and spectroscopically. The photo-induced intramolecular electron transfer was evidently demonstrated by the combination of electrochemical, steady-state, and transient absorption spectroscopic studies. Finally, a remarkable activity was obtained in the present photocatalytic system, indicating the covalent incorporation of photosensitizer and catalytic center as a promising strategy to construct inexpensive, easily accessible [FeFe]-H₂ase model photocatalysts.