高等学校化学学报

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新型红光电磷光芴-alt-咔唑共聚物的合成与发光性能

应磊, 陈钊, 蒋加兴, 管榕, 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
  • 收稿日期:2008-06-23 修回日期:1900-01-01 出版日期:2009-02-10 发布日期:2009-02-10
  • 通讯作者: 杨伟

Synthesis and Light-Emitting Properties of Novel Red Electrophosphorescent Fluorene-alt-Carbazole Copolymers

YING Lei, CHEN Zhao, JIANG Jia-Xing, GUAN Rong, YANG Wei*, CAO Yong   

  1. Institute of Polymer Optoelectronic Materials and Devices, Key Laboratory of Specical Functional Materials of Ministry of Education, South China University of Technology, Guangzhou 510640, China
  • Received:2008-06-23 Revised:1900-01-01 Online:2009-02-10 Published:2009-02-10
  • Contact: YANG Wei

摘要: 通过Suzuki聚合反应合成了一系列以芴-alt-咔唑为主链, 铱配合物为侧链的深红色电磷光共轭聚合物. 发光器件结构为ITO/PEDOT∶PSS/PVK/Copolymer/Ba/Al, 基于共聚物PFCzIrNiq-1的器件在电流密度为9.4 mA/cm2时, 最大外量子效率为0.23%, 最大发射波长为680 nm.

关键词: 芴, 咔唑, 铱配合物, 共聚物, 红光发射

Abstract: A novel monomer derived from dibromocarbazole with N-grafted with Ir complex by a long alkyl side chain was synthesized. Based on this new monomer, a series of poly(fluorene-alt-carbazole)s which tethered red light-emitting Ir complex as emitting center were synthesized with Suzuki polycondensation. The polymer light-emitting diodes with structure of ITO/PEDOT∶PSS/PVK/Copolymer/Ba/Al were prepared based on the resulted copolymers. The copolymer PFCzIrNiq-1 exhibits maximal quantum efficiency of 0.23% at 9.4 mA/cm2. The peak emission of the resulted copolymers was at 680 nm, which was among the reported deepest iridium containing red-light-emitting electrophosphorescent polymers.

Key words: Fluorene, Carbazole, Ir complex, Copolymer, Red-emission

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