三苯胺为中心核的咔唑树枝状主体材料的合成与性能表征

doi:10.3724/SP.J.1095.2014.30395

摘要/Abstract

摘要： 以三苯胺为中心核，第二代的齐聚咔唑为树枝，设计合成了树枝状主体材料H2A。树枝状化合物H2A具有良好的成膜性和优异的热稳定性（Tg=351 ℃）,其三线态能级为2.84 eV。采用H2A作为蓝光铱配合物双(4,6-二氟苯基吡啶-N,C2)吡啶甲酰合铱(FIrpic)的主体材料，制得的蓝光磷光器件的启亮电压为4.8 V，最大功率效率为7.0 lm/W，两项指标均优于以4,4′,4″-三（N-咔唑基）三苯胺（TCTA）为主体材料的相应器件（6.0 V,6.1 lm/W）。

关键词: 小分子主体材料, 树枝状主体材料, 咔唑, 热稳定性, 磷光器件

Abstract: With triphenylamine as the core and the second generation oligocarbazole as the dendron, a dendritic host, namely H2A, has been designed and synthesized. H2A shows good film-forming properties and excellent thermal ability(Tg=351 ℃) and its triplet energy is 2.84 eV. When using H2A as the host for IrⅢ bis(4,6-difluorophenylpyridinato)picolate(FIrpic), blue-emitting electrophosphorescent devices reveal a turn-on voltage of 4.8 V, and a power efficiency of 7.0 lm/W. The performance is superior to that of 4,4′,4″-tris(N-carbazoyl)triphenylamine(TCTA), which shows a turn-on voltage and power efficiency of 6.0 V and 6.1 lm/W, respectively.

Key words: small molecular hosts, dendritic hosts, carbazole, thermal stability, electrophosphorescent devices

中图分类号:

O644.1

王兴东, 王淑萌, 马志华, 丁军桥, 王利祥, 景遐斌, 王佛松. 三苯胺为中心核的咔唑树枝状主体材料的合成与性能表征[J]. 应用化学, DOI: 10.3724/SP.J.1095.2014.30395.

WANG Xingdong1,2, WANG Shumeng1,2, MA Zhihua1, DING Junqiao2, WANG Lixiang1*, JING Xiabin1, WANG Fosong1. Synthesis and Characterization of Carbazole-Based Dendritic Host with Triphenylamine Core[J]. Chinese Journal of Applied Chemistry, DOI: 10.3724/SP.J.1095.2014.30395.

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