Efficient Red Light-Driven Singlet Oxygen Photocatalysis with an Osmium-Based Coulombic Dyad.

ABSTRACT: Photoactive osmium complexes are widely used sensitizers for the generation of singlet oxygen because they can be excited directly into their triplet states with low-energy red light. However, their short-lived excited states reduce quenching efficiencies and reaction quantum yields significantly. To elongate the excited state lifetime, osmium complexes have been linked to organic chromophores to form molecular dyads. This approach, although effective, is time- and resource-consuming, hampering larger-scale applications. Here, we demonstrate a straightforward approach by directly mixing a readily available cationic osmium complex and an anionic perylene derivative in solution. Strong Coulombic interactions facilitate rapid energy transfer (∼100 ps) from the excited osmium complex to the pe

SUBMITTER: Schmitz M 

PROVIDER: S-EPMC12377441 | biostudies-literature | 2025 Aug

REPOSITORIES: biostudies-literature