Significance of the connecting position between Zn(ii) porphyrin and Re(i) bipyridine tricarbonyl complex units in dyads for room-temperature phosphorescence and photocatalytic CO₂ reduction: unexpected enhancement by triethanolamine in catalytic activity.

ABSTRACT: We synthesized three new dyads composed of a Zn porphyrin and fac-Re(bpy)(CO)₃Br (bpy = 2,2'-bipyridine) units, ZnP-nBpy[double bond, length as m-dash]Re^Br (n = 4, 5, and 6), in which the porphyrin is directly connected at the meso-position through the 4-, 5-, or 6-position of the bpy. We investigated the relationships between the connecting positions and the photophysical properties as well as catalytic activity in the CO₂ reduction reaction. The dyad connected through the 6-position, ZnP-6Bpy[double bond, length as m-dash]Re^Br, showed obvious phosphorescence with a lifetime of 280 μs at room temperature, in N,N-dimethylacetamide (DMA), whereas the other two dyads showed almost no phosphorescence under t

SUBMITTER: Kuramochi Y 

PROVIDER: S-EPMC10445468 | biostudies-literature | 2023 Aug

REPOSITORIES: biostudies-literature