Abstract
A novel angular-fused dithianaphthylquinone derivative, f-TX-TPA, was designed and selectively synthesized. The regioselectivity of angular-fused reaction was interpreted by theoretical calculations. The f-TX-TPA compound displayed excellent thermally activated delayed fluorescence property. Moreover, the organic light-emitting diodes (OLEDs) using f-TX-TPA as an emitter exhibited a high external quantum efficiency of 15.9%. These results indicated that angular-fused dithianaphthylquinone derivatives could have great potential in the application of high-efficiency OLEDs.
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