Bicolour electroluminescence of 2-(carbazol-9-yl)anthraquinone based on a solution process

Mechanochromic luminescence (ML), thermally activated delayed fluorescence (TADF), aggregation-induced emission (AIE), and electroluminescence (EL) properties are combined in a single organic molecule, 2-(carbazol-9-yl)-anthraquinone (Cz-AQ). Through controlling film formation in different solvents, the solution-processed nondoped devices utilizing Cz-AQ as the emitter exhibit bicolour emission with peaks at 600 and 680 nm, respectively.