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A high-triplet-energy material, 9′-(4,4′-(phenylphosphoryl)bis(dibenzo[b,d]furan-6,2-diyl))bis(9H-carbazole) (44DFCzPO), was synthesized as a bipolar host material for blue phosphorescent organic light-emitting diodes (PHOLEDs). 44DFCzPO was synthesized by the selective lithiation of the 4-position of a carbazole-modified dibenzofuran, followed by phosphorylation. 44DFCzPO showed a high triplet energy...
A dibenzofuran based host material, 9,9′-(4-(diphenylphosphoryl)dibenzo[b,d]furan-2,8-diyl)bis(9H-carbazole) (DBFDCzPO), was developed as a thermally stable high triplet energy host material for blue phosphorescent organic light-emitting diodes (PHOLEDs). DBFDCzPO showed high triplet energy of 2.89eV and stable film morphology up to 130°C. DBFDCzPO was compared 2,8-di(9H-carbazol-9-yl)dibenzo[b,d]furan...
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