Wide-range color-tunable polycyclo-heteraborin multi-resonance emitters containing B-N covalent bonds.

ABSTRACT: Boron- and nitrogen (BN)-fused polycyclic aromatic frameworks with amine-directed formation of B-N covalent bonds have the potential to form a new family of facile-synthesis multi-resonance luminophores, which, however, still face imperative challenges in diversifying the molecular design to narrow the emission bandwidth and tune the emission colors. Here, we demonstrate a strategic implementation of B-N bond containing polycyclo-heteraborin multi-resonance emitters with wide-range colors from deep-blue to yellow-green (442-552 nm), small full-width at half-maxima of only 19-28 nm and high photoluminescence efficiencies, by stepwise modifying the basic para B-π-B structures with heteroatoms. The corresponding electroluminescent devices show superior maximum external quantum efficien

SUBMITTER: Meng G 

PROVIDER: S-EPMC9890539 | biostudies-literature | 2023 Jan

REPOSITORIES: biostudies-literature