高等学校化学学报 ›› 2018, Vol. 39 ›› Issue (10): 2129-2135.doi: 10.7503/cjcu20180334

• 研究论文:无机化学 • 上一篇    下一篇

混合配体型铱(Ⅲ)配合物的合成及电致发光性能

马晓宇, 梁洁, 叶玲, 范勇, 徐家宁, 叶开其()   

  1. 吉林大学化学学院, 超分子结构与材料国家重点实验室, 长春 130012
  • 收稿日期:2018-05-02 出版日期:2018-09-29 发布日期:2018-09-29
  • 作者简介:

    联系人简介: 叶开其, 男, 博士, 教授, 主要从事有机电致发光材料合成与器件性能研究. E-mail: yekq@jlu.edu.cn

  • 基金资助:
    国家重点研究发展计划项目(批准号: 2017YFB0404400)资助.

Synthesis and Electroluminescence Characterization of Mixed-C^N Ligand Tris-cyclometalated Ir(Ⅲ) Complexes

MA Xiaoyu, LIANG Jie, YE Ling, FAN Yong, XU Jianing, YE Kaiqi*()   

  1. State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry,Jilin University, Changchun 130012, China
  • Received:2018-05-02 Online:2018-09-29 Published:2018-09-29
  • Contact: YE Kaiqi E-mail:yekq@jlu.edu.cn
  • Supported by:
    † Supported by the National Key Research and Development Program of China(No.2017YFB0404400).

摘要:

采用4-甲基-2,5-二苯基吡啶(MDP)、 5-甲基-2-苯基吡啶(PMP)作为配体, 设计合成了2种新的绿色磷光铱(Ⅲ)配合物Ir(MDP)2(PMP)(1)和Ir(MDP)(PMP)2(2). 系统测试了2种配合物的光物理和电化学等性质, 并通过单晶结构和理论计算讨论了材料的分子结构、 堆积结构对光电性能的影响. 利用配合物1和2制备的绿色磷光器件实现了高性能的电致发光, 最大外量子效率(EQE)分别为22.4%和20.7%, 功率效率(PE)分别为86.0和77.5 lm/W, 且滚降较小.

关键词: 有机电致磷光, 铱金属配合物, 混合配体

Abstract:

Two novel mixed 4-methyl-2,5-diphenylpyridine(MDP)/5-methyl-2-phenylpyridine(PMP) tris-cyclometalated iridium complexes Ir(MDP)2(PMP)(complex 1) and Ir(MDP)(PMP)2(complex 2) have been synthesized and characterized systematically in terms of their photophysical and electrochemical properties, and the effect of the molecular and the stacking structure on the photoelectric performance was investigated through the single crystal structure and theoretical calculation. The phosphorescent organic light-emitting diodes(PhOLEDs) based on both new phosphors showed the rather high maximum external quantum efficiency(EQE) of 22.4% and 20.7%, and maximum power efficiency(PE) values of 86.0 and 77.5 lm/W respectively, with the low efficiency roll-off.

Key words: Electrophosphorescence, Iridium complex, Mixed-C^N ligand(Ed.: F,K,M)

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