Exceptionally fast radiative decay of a dinuclear platinum complex through thermally activated delayed fluorescence.

ABSTRACT: A novel dinuclear platinum(ii) complex featuring a ditopic, bis-tetradentate ligand has been prepared. The ligand offers each metal ion a planar O^N^C^N coordination environment, with the two metal ions bound to the nitrogen atoms of a bridging pyrimidine unit. The complex is brightly luminescent in the red region of the spectrum with a photoluminescence quantum yield of 83% in deoxygenated methylcyclohexane solution at ambient temperature, and shows a remarkably short excited state lifetime of 2.1 μs. These properties are the result of an unusually high radiative rate constant of around 4 × 10⁵ s^-1, a value which is comparable to that of the very best performing Ir(iii) complexes. This unusual behaviour is the result of efficient thermally

SUBMITTER: Pander P 

PROVIDER: S-EPMC8098751 | biostudies-literature | 2021 Mar

REPOSITORIES: biostudies-literature