Full-range luminescence color tuning from blue to red in generic single-boron multi-resonance delayed fluorescence emitters

Abstract

We report a family of sulfur-containing, single-boron multi-resonance thermally activated delayed fluorescence emitters that exhibit narrowband emissions spanning the full visible spectrum from blue to red. Site-specific incorporation of a carbazole unit and ring-fused π-extension with an indolocarbazole fragment enable extensive color tuning while maintaining sharp emission profiles.