高等学校化学学报 ›› 2021, Vol. 42 ›› Issue (12): 3571.doi: 10.7503/cjcu20210537

• 无机化学 • 上一篇    下一篇

窄光谱磷光配合物的设计及电致发光性能

张慧东1, 谷盼盼1, 张芳1, 都明旭2, 叶开其2(), 刘宇2()   

  1. 1.辽东学院化工与机械学院, 化学工程与工艺系, 丹东 118003
    2.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:2021-07-27 出版日期:2021-12-10 发布日期:2021-09-23
  • 通讯作者: 刘宇 E-mail:yekq@jlu.edu.cn;yuliu@jlu.edu.cn
  • 作者简介:叶开其, 男, 博士, 教授, 主要从事有机合成及单晶结构解析研究. E-mail: yekq@jlu.edu.cn
  • 基金资助:
    辽宁省自然科学基金(20180550958);辽宁省教育厅科学研究经费(LNSJYT201909);国家自然科学基金(51773078)

Design and Electroluminescence Properties of Narrow-spectrum Phosphorescent Complexes

ZHANG Huidong1, GU Panpan1, ZHANG Fang1, DU Mingxu2, YE Kaiqi2(), LIU Yu2()   

  1. 1.Department of Chemical Engineering and Technology,School of Chemical Engineering and Machinery,Eastern Liaoning University,Dandong 118003,China
    2.State Key Laboratory of Supramolecular Structure and Materials,College of Chemistry,Jilin University,Changchun 130012,China
  • Received:2021-07-27 Online:2021-12-10 Published:2021-09-23
  • Contact: LIU Yu E-mail:yekq@jlu.edu.cn;yuliu@jlu.edu.cn
  • Supported by:
    the Natural Science Foundation of Liaoning Province, China(20180550958);the Scientific Research Fund of Liaoning Provincial Department of Education, China(LNSJYT201909);the National Natural Science Foundation of China(51773078)

摘要:

通过对螯合配体及辅助配体的设计与筛选, 构筑了一种全新的天蓝光铱金属配合物(MeFPyPy)2Ir(dipcMePy)(简称MFPMP), 实现了三重态配体中心、 三重态金属-配体电荷转移和/或三重态配体-配体电荷转移跃迁类型混合比例较优化的发光过程. 以MFPMP作为发光体的磷光有机电致发光器件实现了半峰宽为52 nm, 最大发光波长为476 nm的窄光谱、 单峰型、 高亮度、 高效率天蓝光发射, 并在1000 cd/m2的实用亮度下保持了25%以上的外量子效率(EQE), 与目前报道的最高水平有机电致发光器件性能相当. 本工作为进一步开发色纯度更高、 更具有实用性的磷光配合物发光材料提供了一条可行的途径.

关键词: 有机电致发光, 铱金属配合物, 胍, 窄光谱, 色纯度

Abstract:

Through the design and screening of cyclometalated(C^N) ligands and auxiliary ligands, a new sky blue iridium metal complex (MeFPyPy)2Ir(dipcMePy)(MFPMP) was constructed, where the optimized proportion of 3LC and 3MLCT/3LLCT transition has been achieved. The MFPMP-based PhOLED realizes narrow spectrum, single peak, high brightness and high efficiency sky blue EL emission with a half peak width of 52 nm and a maximum emission wavelength of 476 nm, achieving an external quantum efficiency(EQE) of more than 25% at a practical luminance of 1000 cd/m2, which can be comparable to that of the highest-level OLEDs reported so far. This work provides a feasible way for further developing the phosphorescent complex materials with higher color purity and more practicability.

Key words: Organic electroluminescence, Iridium metal complex, Guanidine, Narrow spectrum, Color purity

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