氮杂环苯基吡啶类铱配合物的合成及其器件性能  

Synthesis and device properties of azeticyclic phenylpyridine iridium complexes

作　　者：潘露露 杭德余 陈婷 温洁 向陆军 钱家盛[1] PAN Lulu;HANG Deyu;CHEN Ting;WEN Jie;XIANG Lujun;QIAN Jiasheng(College of Chemistry and Chemical Engineering,Anhui University,Hefei 230601,Anhui,China;Beijing Yanhua Jilian Optoelectronic Technology Co.,Ltd.,102422,Beijing,China)

机构地区：[1]安徽大学化学化工学院,安徽合肥230601 [2]北京燕化集联光电技术有限公司,北京102422

出　　处：《精细化工》2024年第3期580-587,共8页Fine Chemicals

基　　金：2020年房山区科技计划项目重大课题(20200102)。

摘　　要：通过引入苯基吡啶,对2-甲基苯并呋喃并[2,3-b]吡啶-8-硼酸酯(Ⅱ)进行修饰,并对辅助配体进行部分氘代,同时对5-甲基-2-对甲苯基吡啶主配体的两个甲基进行全氘代,分别合成了2种铱配合物,双[5-甲基-2-(4-甲基苯基)吡啶基-N,C^(2)]{2-[7-(6-苯基吡啶-2-基)二苯并呋喃-4-基]-4-苯基吡啶}合铱(Ⅳ)和双{5-(甲基-d3)-2-[4-(甲基-d3)苯基]吡啶基-N,C^(2)}[2-{7-[6-(甲基-d3)吡啶-2-基]二苯并呋喃-4-基}-4-(苯基-d5)吡啶]合铱(Ⅳ-d_(20))。采用1HNMR、HRMS、元素分析仪对其结构进行了表征与确认。利用UV-Vis光谱、荧光发射光谱(PL)和循环伏安法对其光物理性质及能级结构进行了测试,以铱配合物Ⅳ和Ⅳ-d_(20)为客体制备了器件,并评价了其性能。结果表明,铱配合物Ⅳ和Ⅳ-d_(20)的光致发光光谱发射波长分别为546.9和548.0 nm,均是潜在的黄绿色磷光材料。铱配合物Ⅳ-d_(20)在电致发光下表现出更优异的器件性能。基于铱配合物(MMppy-d6)2Ir(MPPBFP-d8)的器件发射波长为552 nm,色坐标为(0.43,0.56),最大电流效率为97.49 cd/A,最大外量子效率为26.83%。By introducing phenylpyridine to modify 2-methylbenzofuran[2,3-b]pyridine-8-boronate(Ⅱ)and partially deuterizing the auxiliary ligand while fully deuterizing two methyl groups of 5-methyl-2-ptolylpyridine main ligand,two iridium complexes,bis[5-methyl-2-(4-methylphenyl)pyridyl-N,C^(2)]{2-[7-(6-phenylpyridin-2-yl)dibenzofuran-4-yl]-4-phenylpyridine}iridium(Ⅳ)and bis{5-(methyl-d3)-2-[4-(methyl-d3)phenyl]pyridyl-N,C^(2)}[2-{7-[6-(methyl-d3)pyridin-2-yl]dibenzofuran-4-yl}-4-(phenyl-d5)pyriridine]iridium(Ⅳ-d_(20)),were synthesized,with the structures characterized and confirmed by 1HNMR,HRMS,and elemental analyzer.The photophysical properties and energy level structure were then characterized by UV-Vis spectroscopy,fluorescence emission spectroscopy(PL)and cyclic voltammetry.Devices were constructed with iridium complexesⅣandⅣ-d_(20)as guests,and their performance was evaluated.The results showed that iridium complexesⅣandⅣ-d_(20)displayed photoluminescence spectral emission wavelengths of 546.9 and 548.0 nm,respectively,indicating potential yellow-green phosphorescent materials.Iridium complexesⅣ-d_(20)exhibited better device performance under electroluminescence.The device constructed with iridium complexⅣ-d_(20)showed an emission wavelength of 552 nm,color coordinate of(0.43,0.56),maximum current efficiency of 97.49 cd/A,and maximum external quantum efficiency of 26.83%.

关 键 词：氘代 铱配合物 磷光掺杂 OLED 功能材料 

分 类 号：O641.4[理学—物理化学]