Carbazole-carboline core as a backbone structure of high triplet energy host materials
摘要:
A carbazole-carboline core was developed as a backbone structure of high triplet energy host materials and three derivatives of the carbazole-carboline core were synthesized. The carbazole and carboline units were linked via the 3-position of the carbazole and the 6-position of the carboline, and the carbazole-carboline core was modified with cyanophenyl, phenyl and 9-carbazolylphenyl moieties to control the charge transport properties of the host materials. Triplet energy of the carbazole-carboline core derived host materials were above 2.85 eV irrespective of the substituent of the carbazole-carboline core. The new materials were tested as the host materials for blue phosphorescent organic light-emitting diodes and the quantum efficiency of the blue devices reached 23.4%. (C) 2015 Elsevier Ltd. All rights reserved.
Carbazole-carboline core as a backbone structure of high triplet energy host materials
摘要:
A carbazole-carboline core was developed as a backbone structure of high triplet energy host materials and three derivatives of the carbazole-carboline core were synthesized. The carbazole and carboline units were linked via the 3-position of the carbazole and the 6-position of the carboline, and the carbazole-carboline core was modified with cyanophenyl, phenyl and 9-carbazolylphenyl moieties to control the charge transport properties of the host materials. Triplet energy of the carbazole-carboline core derived host materials were above 2.85 eV irrespective of the substituent of the carbazole-carboline core. The new materials were tested as the host materials for blue phosphorescent organic light-emitting diodes and the quantum efficiency of the blue devices reached 23.4%. (C) 2015 Elsevier Ltd. All rights reserved.
High-triplet-energy host materials derived from directly-coupled carbazole-pyridoindole moieties
作者:Sung Yong Byeon、Jun Yeob Lee
DOI:10.1016/j.dyepig.2016.03.004
日期:2016.7
containing hostmaterials for green and bluephosphorescentorganiclight-emittingdiodes were synthesized by linking the two moieties via two different positions on the carbazole-pyridoindole core structure. The carbazole-pyridoindole moieties were functionalized using benzonitrile and phenyl substituent groups to introduce controlled-charge transport properties. The hostmaterials synthesized using the