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A bipolar host material with a phenyl-modified acridine core and a pyridine unit in the molecular structure was synthesized as the host material for green phosphorescent organic light-emitting diodes (PHOLEDs). A high triplet energy of 2.76 eV was obtained from the host and a high quantum efficiency of 13.5 % was achieved in green PHOLEDs using the acridine-based host material.
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Kim et al. (2012) studied this question.
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