Boron-Nitrogen Framework Substituted Anthracene as "Hot Exciton" Fluorophores for Efficient Sky-Blue Narrowband Emissive OLEDs with Full-Width at Half-Maximum below 30 nm

Due to the small energy gap between high-lying triplet state Tn (n ≥ 2) and the singlet state Sm (m ≥ 1), "hot exciton" fluorescent materials are capable of harvesting...