Abstract
A series of novel N-coumarin derivatives containing oligothiophene-substituted N-coumarins as the core and bis(aryl)carbazoles as the substituent were synthesized and characterized. Their optical, electrochemical, and thermal properties were investigated. The electroluminescence (EL) properties of the selected materials were also studied. Solution-processed OLEDs with green and yellow light emission, turn-on voltages of 2.7–2.9V, and maximum luminance efficiencies of up to 3.94cdA−1 at 17.6mAcm−2 (maximum power efficiency of 1.62lmW−1) were prepared.
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