Development of a panchromatic photosensitizer and its application to photocatalytic CO₂ reduction.

ABSTRACT: We designed and synthesized a heteroleptic osmium(ii) complex with two different tridentate ligands, Os. Os can absorb the full wavelength range of visible light owing to S-T transitions, and this was supported by TD-DFT calculations. Excitation of Os using visible light of any wavelength generates the same lowest triplet metal-to-ligand charge-transfer excited state, the lifetime of which is relatively long (τ _em = 40 ns). Since excited Os could be reductively quenched by 1,3-dimethyl-2-(o-hydroxyphenyl)-2,3-dihydro-1H-benzo[d]imidazole, Os displays high potential as a panchromatic photosensitizer. Using a combination of Os and a ruthenium(ii) catalyst, CO₂ was photocatalytically reduced to HCOOH <

SUBMITTER: Irikura M 

PROVIDER: S-EPMC8549774 | biostudies-literature | 2021 Oct

REPOSITORIES: biostudies-literature