窄光谱磷光配合物的设计及电致发光性能  

Design and Electroluminescence Properties of Narrow-spectrum Phosphorescent Complexes

作　　者：张慧东 谷盼盼 张芳 都明旭 叶开其[2] 刘宇[2] ZHANG Huidong;GU Panpan;ZHANG Fang;DU Mingxu;YE Kaiqi;LIU Yu(Department of Chemical Engineering and Technology,School of Chemical Engineering and Machinery,Eastern Liaoning University,Dandong 118003,China;State Key Laboratory of Supramolecular Structure and Materials,College of Chemistry,Jilin University,Changchun 130012,China)

机构地区：[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

出　　处：《高等学校化学学报》2021年第12期3571-3578,共8页Chemical Journal of Chinese Universities

基　　金：辽宁省自然科学基金(批准号:20180550958);辽宁省教育厅科学研究经费(批准号:LNSJYT201909);国家自然科学基金(批准号:51773078)资助.

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)_(2)Ir(dipc⁃MePy)(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/m^(2)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.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/m^(2),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.

关 键 词：有机电致发光 铱金属配合物 胍 窄光谱 色纯度 

分 类 号：O614[理学—无机化学]