Rational design of host materials for phosphorescent organic light-emitting diodes by modifying the 1-position of carbazole?
Chemical Communications Pub Date: 2015-06-05 DOI: 10.1039/C5CC02188J
Abstract
A novel carbazole moiety with bromine at the 1-position of carbazole was synthesized and four carbazole compounds derived from the 1-position modified carbazole were developed as the host materials for phosphorescent organic light-emitting diodes. The 1-position modified carbazole was coupled with another carbazole to prepare bicarbazole intermediates, which were substituted with 4,6-diphenyltriazine to yield four bicarbazole derivatives modified with the electron deficient diphenyltriazine unit. The triplet host materials showed high quantum efficiency above 20% and low driving voltage below 5.0 V at 1000 cd m?2 in green phosphorescent organic light-emitting diodes.
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Journal Name：Chemical Communications
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CAS no.: 89640-58-4
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