3A Cyanide-Bridged Ru-Fe Supramolecular Photocatalyst for Efficient CO₂ Reduction.

ABSTRACT: Supramolecular control over electron transfer is a key challenge in artificial photosynthesis. Here, we report a cyano-bridged Ru-Fe supramolecular photocatalyst that self-assembles in solution through spontaneous coordination. This preorganized architecture enables ultrafast excited-state electron transfer from Ru to Fe via a static oxidative quenching pathway, as revealed by pump-probe transient absorption spectroscopy showing sub-picosecond formation of the reduced Fe species, in contrast to the reductive quenching mechanisms commonly observed in related systems. Remarkably, reversible coordination of CO₂ to the supramolecular adduct can be directly monitored by electronic absorption spectroscopy, providing rare experimental access to substrate binding within a molecular phot

SUBMITTER: Mancini F 

PROVIDER: S-EPMC13473391 | biostudies-literature | 2026 Aug

REPOSITORIES: biostudies-literature