Electroluminescence property of a novel dendritic polyfluorene derivative containing a triphenylamine group

被引：7

作者：

Li, FS

Chen, ZJ ^{[1
]}

Qu, B

Wei, W

Gong, QH

机构：

[1] Peking Univ, State Key Lab Artificial Microstruct & Mesoscop P, Beijing 100871, Peoples R China

[2] Peking Univ, Dept Phys, Beijing 100871, Peoples R China

[3] Xi An Jiao Tong Univ, Sch Elect & Informat Engn, Xian 710049, Peoples R China

来源：

JOURNAL OF PHYSICS D-APPLIED PHYSICS | 2005年 / 38卷 / 06期

关键词：

D O I：

10.1088/0022-3727/38/6/010

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

A novel dendritic polyfluorene derivative containing triphenylamine, poly((9,9-dibutyl-2,7-diiodo-9H-fluorene)trisphenylamine) (PDFA) was synthesized by the Ni(0)-catalysed reaction of 9,9-dibutyl-2,7-diiodo-9H-fluorene and tris-(4-iodo-phenyl)-amine. PDFA has many advantages compared with polyfluorene (PF). It enhances the hole-injecting and transporting capabilities and the dendritic structure significantly, reduces aggregation and enhances the thermal stability. Single and double-layer LED devices using PDFA showed a maximum luminescence intensity and quantum efficiency that was almost twice that of the device based on PF (poly(9,9-dibutyl)fluorene) and the emission colour was closer to standard blue. The experimental results indicated that the incorporation of the hole-transporting triphenylamine group into PF may provide a means of improving the thermal and electroluminescence characteristics of organic light-emitting diodes.

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页码：847 / 851

页数：5

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