New Carbazole-Based Hyperbranched Conjugated Polymer with Good Hole-Transporting Properties

被引：12

作者：

Li, Zhong'an ^{[2
]}

Jiang, Zuoquan ^{[2
]}

Qiu, Guofu ^{[3
]}

Wu, Wenbo ^{[2
]}

Yu, Gui ^{[1
]}

Liu, Yunqi ^{[1
]}

Qin, Jingui ^{[2
]}

Li, Zhen ^{[2
]}

机构：

[1] Chinese Acad Sci, Inst Chem, Organ Solids Labs, Beijing 100080, Peoples R China

[2] Wuhan Univ, Dept Chem, Wuhan 430072, Peoples R China

[3] Wuhan Univ, Coll Pharm, Wuhan 430072, Peoples R China

来源：

MACROMOLECULAR CHEMISTRY AND PHYSICS | 2010年 / 211卷 / 16期

基金：

美国国家科学基金会;

关键词：

carbazoles; hole-transporting properties; hyperbranched polymers; synthesis; Ullmann coupling reaction; LIGHT-EMITTING-DIODES; ORGANIC ELECTROLUMINESCENT DIODES; MODEL COMPOUNDS; DEVICES; DENDRIMERS; MACROMOLECULES; DERIVATIVES; DESIGN;

D O I：

10.1002/macp.201000019

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

A copper-catalyzed Ullmann C-N coupling reaction was used for the preparation of a new carbazole-based HPU in good yield with a high molecular weight through a facile "AB(2) + A(2) + B-2"-type approach. The HPU exhibited good solubility, high thermal stability with a T-g of 196 degrees C, as well as a suitable HOMO level for good hole injection and transporting properties. A two-layer OLED device, using HPU as hole-transporting layer (HTL) and Alq(3) as the light-emitting layer, was fabricated to investigate the hole-transporting properties of HPU. The luminance efficiency reached 1.14 cd.A(-1) at the maximum current density of 1 240 mA.cm(-2), while the maximum luminance efficiency was 1.65 cd A(-1) indicating the high morphological and thermal stability of HPU.

引用

页码：1820 / 1825

页数：6

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