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

Abstract

Summary

A photochemical reduction of CO₂ to CO was shown using the zinc porphyrin dyad with a connected rhenium complex -missing link parameter- as a combined catalyst and photosensitizer molecule. Turnover numbers (TONs) of >1300 and a selectivity of >99.9% for CO were reached in DMA with catalyst 100949. The experiments were conducted under visible-light irradiation (λ = 420 nm) using BIH as sacrificial electron donor (see section SEDs below).

Content of the published article in detail

The article contains results for the reduction of CO₂ to CO under visible-light catalysis using the as a catalyst. The catalytic system performs best (referring to the TON of CO production) in DMA.

Catalyst and Photosensitizer

(Zn(tBuPP))-(Re(Phen)Br(CO)3)

Sacrificial electron donor

In this study, the experiments were done with the sacrificial electron donor BIH BIH.

Additives

In this study, phenol was added to the reaction.