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Indexed by:期刊论文

Date of Publication:2015-04-08

Journal:JOURNAL OF THE AMERICAN CHEMICAL SOCIETY

Included Journals:SCIE、EI、PubMed、Scopus

Volume:137

Issue:13

Page Number:4332-4335

ISSN No.:0002-7863

Abstract:A highly active supramolecular system for visible light-driven water oxidation was developed with cyclodextrin-modified ruthenium complex as the photosensitizer, phenyl-modified ruthenium complexes as the catalysts, and sodium persulfate as the sacrificial electron acceptor. The catalysts were found to form 1:1 host-guest adducts with the photosensitizer. Stopped-flow measurement revealed the host-guest interaction is essential to facilitate the electron transfer from catalyst to sensitizer. As a result, a remarkable quantum efficiency of 84% was determined under visible light irradiation in neutral aqueous phosphate buffer. This value is nearly 1 order of magnitude higher than that of noninteraction system, indicating that the noncovalent incorporation of sensitizer and catalyst is an appealing approach for efficient conversion of solar energy into fuels.