Bulky Ligand-Induced Hindrance in Photocatalytic CO₂ Reduction over Various Tris(bipyridine)cobalt(II) Chloride Complexes.

ABSTRACT: Photocatalytic CO₂ conversion is one of the ideal approaches to address both topics of solar energy shortage and carbon neutrality. Cobalt(II) centers coordinated with bipyridines have been designed and evaluated as catalysts for CO₂ conversion under light irradiation. Herein, we report a series of pyridine-based cobalt complexes with alkyl substituents as molecular photocatalysts, aiming to elucidate the effects of alkyl type and substitution position on catalytic performance through spectroscopic and electrochemical measurements. The substitution of the hydrogen at 4,4'-positions on the bipyridine ring with a methyl group, a tert-butyl group, and a nonyl group led to a decrease in the conversion rate of CO₂ by 13.2%, 29.6%, and 98%, respectively. The meth

SUBMITTER: Lin J 

PROVIDER: S-EPMC12196081 | biostudies-literature | 2025 Jun

REPOSITORIES: biostudies-literature