Article ID Journal Published Year Pages File Type
176039 Dyes and Pigments 2014 5 Pages PDF
Abstract

•Carbazole and pyridine modified high triplet energy host material.•High triplet energy through ortho-modification of phenyl moiety.•High quantum efficiency in blue phosphorescent organic light-emitting diodes.

A new biphenyl substituted with a carbazole unit and a pyridine unit, 9-(2′-(pyridin-3-yl)-[1,1′-biphenyl]-3-yl)-9H-carbazole, was synthesized as the host material for blue phosphorescent organic light-emitting diodes. A high triplet energy of 2.96 eV was obtained by inclusion of pyridine at ortho-position of biphenyl moietry. The new biphenyl was applied as the host material for blue phosphorescent organic light-emitting diodes and a high quantum efficiency of 18.4% was achieved.

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Physical Sciences and Engineering Chemical Engineering Chemical Engineering (General)
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