Physics

Organic chemistry

Zinc

Photocatalysis

Stereochemistry

Electron transfer

Catalysis

Excited state

Phosphorescence

Inorganic chemistry

Nuclear physics

Chemistry

Electron donor

Imidazole

Porphyrin

Molecule

Rhenium

Quantum mechanics

Photoinduced electron transfer

Photochemistry

Triplet state

Fluorescence

Journal of the American Chemical Society

A porphyrin/rhenium complex dyad, ZnP-phen=Re, in which the 2-position of the 1,10-phenanthroline (phen) of fac-Re(phen)(CO)3Br is directly connected with the meso-position of zinc(II) porphyrin, showed phosphorescence from the zinc porphyrin part under Ar, even at room temperature. The phosphorescence was efficiently quenched by 1,3-dimethyl-2-phenyl-2,3-dihydro-1H-benzo[d]imidazole (BIH) used as an electron donor, under Ar, with the Stern-Volmer constant KSV = 180 000 M-1, indicating that the quantitative photoinduced electron transfer occurred from BIH to the excited triplet state (T1) of ZnP-phen=Re. The system affords CO with a high turnover number (>1300) and >99.9% CO selectivity in the photocatalytic CO2 reduction.

Photocatalytic CO<sub>2</sub> Reduction Mediated by Electron Transfer via the Excited Triplet State of Zn(II) Porphyrin

Photocatalytic CO2 Reduction Mediated by Electron Transfer via the Excited Triplet State of Zn(II) Porphyrin

Photocatalytic CO₂ Reduction Mediated by Electron Transfer via the Excited Triplet State of Zn(II) Porphyrin