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化学学报
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化学学报 ›› 2009, Vol. 67 ›› Issue (23): 2745-2749. 上一篇    下一篇

研究论文

新型电磷光咔唑-co-吡啶共聚物的合成与发光性能

张安琪,邹建华,应磊,陈奇良,陈 冰,杨伟,曹 镛   

  1. (华南理工大学高分子光电材料与器件研究所 教育部特种功能材料重点实验室 广州 510640)
  • 投稿日期:2009-04-13 修回日期:2009-06-11 发布日期:2009-08-10
  • 通讯作者: 杨伟 E-mail:pswyang@scut.edu.cn
  • 基金资助:

    国家自然科学基金（U0634003）;科技部973计划 (2009CB623601)项目

Synthesis and Light-Emitting Properties of Novel Electrophosphorescent Poly(carbazole-co-pyridine)

Zhang, Anqi，Zou, Jianhua，Ying, Lei，Chen, Qiliang Chen, Bing，Yang, Wei*，Cao, Yong   

  1. (Key Laboratory of Specially Functional Materials of Ministry of Education, Institute of Polymer Optoelectronic Materials and Devices, South China University of Technology, Guangzhou 510640)
  • Received:2009-04-13 Revised:2009-06-11 Published:2009-08-10

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被引次数

5

用Suzuki缩聚反应制备了一系列新型咔唑-吡啶共轭主链上含有金属铱配合物单元的共聚物. 共聚物发光器件结构为ITO/PEDOT:PSS/polymer＋PBD (w＝30%)/CsF/Al [氧化铟锡/苯磺酸掺杂聚乙烯基二氧噻吩/聚合物＋2,4-二苯-5-4-叔丁基苯-1,3,4-恶二唑(w＝30%)/氟化铯/铝]. 基于共聚物PCzPyIrMppy2的器件在电流密度为20.8 mA/cm2时, 最大外量子效率和流明效率分别达到4.1%和6.1 cd/A. 在电流密度200 mA/cm2时, 器件的最大外量子效率和流明效率仍分别达到3.2%和4.8 cd/A, 器件的发光的最大波长位于570 nm, 最大亮度达到13251 cd/m2. 研究结果表明, 在共轭聚合物主链上引入螯合金属铱配合单元是实现高效、稳定的电致磷光器件的有效方法之一.

关键词: 咔唑-co-吡啶共聚物, 铱配合物, 橙光发射

A series of novel poly(carbazole-co-pyridine)s conjugated with copolymerized chelated Ir complexes in the main chain were synthesized by Suzuki polycondensation. Based on such copolymers, the electroluminescent devices were fabricated with configuration of ITO/PEDOT:PSS/polymer＋PBD (w＝30%)/ CsF/Al. The best device performances were achieved based on copolymer PCzPyIrMppy2, which showed the maximal quantum efficiency (QEext) and luminous efficiency (LE) of 4.1% and 6.1 cd/A, respectively, at current density (J) of 20.8 mA/cm2. Besides, the QEext and LE remained 3.2% and 4.8 cd/A, respectively, with peak emission at 570 nm and maximal luminance of 13251 cd/m2. This result indicated that incorporation of the phosphorescent complex into the conjugated polymer main chain was a new way to simultaneously realize high efficiency, long-term stability of phosphorescent polymer light-emitting diodes.

Key words: poly(carbazole-co-pyridine), Ir complex, orange light-emitting