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An Efficient Ru II –Rh III –Ru II Polypyridyl Photocatalyst for Visible‐Light‐Driven Hydrogen Production in Aqueous Solution
Author(s) -
Stoll Thibaut,
Gennari Marcello,
Fortage Jérôme,
Castillo Carmen E.,
Rebarz Mateusz,
Sliwa Michel,
Poizat Olivier,
Odobel Fabrice,
Deronzier Alain,
Collomb MarieNoëlle
Publication year - 2014
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201308132
Subject(s) - ruthenium , rhodium , catalysis , photocatalysis , aqueous solution , hydrogen production , chemistry , photosensitizer , hydrogen , homogeneous catalysis , homogeneous , turnover number , photochemistry , molecule , combinatorial chemistry , organic chemistry , physics , thermodynamics
The development of multicomponent molecular systems for the photocatalytic reduction of water to hydrogen has experienced considerable growth since the end of the 1970s. Recently, with the aim of improving the efficiency of the catalysis, single‐component photocatalysts have been developed in which the photosensitizer is chemically coupled to the hydrogen‐evolving catalyst in the same molecule through a bridging ligand. Until now, none of these photocatalysts has operated efficiently in pure aqueous solution: a highly desirable medium for energy‐conversion applications. Herein, we introduce a new ruthenium–rhodium polypyridyl complex as the first efficient homogeneous photocatalyst for H 2 production in water with turnover numbers of several hundred. This study also demonstrates unambiguously that the catalytic performance of such systems linked through a nonconjugated bridge is significantly improved as compared to that of a mixture of the separate components.