One-Step Intermolecular Oxidative Coupling and Cyclodehydration Strategy for Pure-Green B,N,O-Embedded Hetero[9]Helicene Emitter.
Helicenes are promising circularly polarized luminescence (CPL) candidates owing to their inherent chirality. In particular, B,N-embedded heterohelicenes achieve superior exciton utilization via multiple-resonance thermally activated delayed fluorescence, whereas their syntheses remain challenging. Herein, we present a...