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论文类型：期刊论文

发表时间：2008-07-10

发表刊物：JOURNAL OF PHYSICAL CHEMISTRY B

收录刊物：SCIE、EI、PubMed

卷号：112

期号：27

页面范围：8198-8202

ISSN号：1520-6106

摘要：A noncovalent assembly of a pyridyl-functionalized hydrogenase active-site model complex and zinc tetraphenylporphyrin has been obtained and characterized. Upon light irradiation, fluorescence quenching by electron transfer was observed from the singlet excited state of the porphyrin to the diiron center, and the mechanism was verified by fluorescence lifetime and transient absorption spectroscopic measurements. In contrast to molecular dyads linked by covalent bonds, the assembled system was designed to avoid charge recombination via complex dissociation after photo-induced electron transfer. Visible light-driven hydrogen generation was observed from this self-assembled system. The assembling strategy employed in this study has the potential to be used for any other hydrogenase models in the future.