Multi-resonance emitters with room-temperature phosphorescence in amorphous state and excited by visible light.

ABSTRACT: Unlike boron, nitrogen-containing multi-resonance emitters with thermally activated delayed fluorescence, here we report boron, sulfur (B, S)-based multi-resonance emitters with room-temperature phosphorescence (RTP) by inserting thiophene into a 5,9-dithia-13b-boranaphtho[3,2,1-de]anthracene skeleton that simultaneously realizes large singlet-triplet energy splitting and strong spin-orbital coupling, leading to efficient room-temperature phosphorescence in an amorphous state. Unlike most RTP emitters with ultraviolet excitation, the multi-resonance RTP emitters exhibit strong phosphorescence under daily-use blue/white LED lamps owing to their intense absorption in the visible-light region (400-486 nm). Meanwhile, such RTP behavior can be tuned by the number and fusing patter

SUBMITTER: Du B 

PROVIDER: S-EPMC11575629 | biostudies-literature | 2024 Nov

REPOSITORIES: biostudies-literature