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A new intermediate, 3-bromo-9,9-diphenyl-9,10-dihydroacridine, based on 9,10-dihydroacridine was synthesized and thereby a new host material, 2,6-bis(9,9,10-triphenyl-9,10-dihydroacridin-3-yl)pyridine, via the intermediate was designed and prepared. This intermediate directed a meta-derivation and could make the resulted host retain triplet energy of 2.68 eV. Besides, the rigid backbone along with...
Two novel bipolar host materials were designed and synthesized, by incorporating α-carboline and carbazole to spiro-acridine-fluorene skeleton. As expected, both materials exhibited high triplet energy over 2.8 eV, indicating they could act as suitable blue hosts in phosphorescent organic light-emitting diodes. By changing the appending group from carbazole to α-carboline, the thermal property and...
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