1,4‐Bis(diarylamino)‐2,5‐bis(4‐cyanophenylethenyl)benzenes: Fluorophores Exhibiting Efficient Red and Near‐Infrared Emissions in Solid State

Molecular fluorophores of type A–π–D–π–A (D=donor, A=acceptor) demonstrate solid-state emission in the red to near-infrared region with high efficiency. The emission color can be tuned through the substituents on the diarylamino and cyanophenyl moieties. The electroluminescence performance of the designed fluorophore confirms its potential as an emitter for use in organic light-emitting devices.