Azaborine as a Versatile Weak Donor for Thermally Activated Delayed Fluorescence.

ABSTRACT: Extensive research has been devoted to the development of thermally activated delayed fluorescence emitters, especially those showing pure-blue emission for use in lighting and full-color display applications. Toward that goal, herein we report a novel weak donor, 1,4-azaborine (AZB), with complementary electronic and structural properties compared to the widely used dimethylacridan (DMAC) or carbazole (Cz) donors. Coupled with a triazine acceptor, AZB-Ph-TRZ is the direct structural analogue of the high-performance and well-studied green TADF emitter DMAC-TRZ and has ΔE_ST = 0.39 eV, a photoluminescence quantum yield (Φ_PL) of 27%, and λ_PL = 415 nm in 10 wt % doped mCP films. The shortened analogue AZB-TRZ possesses red-shifted em

SUBMITTER: Sudhakar P 

PROVIDER: S-EPMC10236432 | biostudies-literature | 2023 May

REPOSITORIES: biostudies-literature