title: Highly efficient photocatalytic water reduction with robust iridium(III) photosensitizers containing arylsilyl substituents.
abstract: Waterproof complexes: Cationic Ir(III) photosensitizers (PSs) with an ancillary 4,4'-bis(4-(triphenylsilyl)phenyl)-2,2'-bipyridine ligand enabled hydrogen evolution from water with high turnover numbers (TONs; see scheme). The peripheral triphenylsilyl moieties prevent ligand substitution by solvent molecules, such as water, and thus increase the durability of the complexes. SR=sacrificial reducing agent, WRC=water-reduction catalyst.
authors.affiliation: Center for Supramolecular Optoelectronic Materials, WCU Hybrid Materials Program and Department of Materials Science and Engineering, Seoul National University, Seoul 151-744 (Korea) http://csom.snu.ac.kr.
authors.forename: Dong Ryeol
authors.initials: DR
authors.lastname: Whang
authors.forename: Ken
authors.initials: K
authors.lastname: Sakai
authors.forename: Soo Young
authors.initials: SY
authors.lastname: Park
keywords: hydrogen production; iridium; photocatalysis; photosensitizers; water reduction