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Updated: Mar 6, 2026

Developing Photosensitizer-Cobaloxime Hybrids for Solar-Driven H2 Production in Aqueous Aerobic Conditions
Published on: October 5, 2019
Supramolecular photocatalysts constructed with a photosensitizer unit with two tridentate ligands for CO2 reduction
Yusuke Tamaki1, Osamu Ishitani
1Department of Chemistry, School of Science, Tokyo Institute of Technology, 2-12-1-NE-1, O-okayama, Meguro-ku, Tokyo 152-8550, Japan. ishitani@chem.titech.ac.jp.
Abstract:
New supramolecular photocatalysts comprising an asymmetric bis-tridentate Ru(ii) complex that functions as a photosensitizer and a Ru(ii) carbonyl complex as the catalyst were designed. The complexes photocatalyzed the reduction of CO2 to CO or formic acid with high selectivity. The product distribution depended on the catalyst unit. CO and formic acid were the main products when using [Ru(BL)(Clbpy)(CO)]2+ (BL = bridging ligand, Clbpy = 4,4'-dichloro-2,2'-bipyridine) and Ru(BL)(CO)2Cl2 catalysts, respectively.
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