Sky-blue-emitting cationic iridium complexes with oxadiazole/triazine-type counter-anions and their use for efficient solution-processed organic light-emitting diodes
作者:Rubing Bai、Pei Wang、Xianwen Meng、Lei He
DOI:10.1016/j.dyepig.2020.108586
日期:2021.1
facile approach to tune the properties of cationic iridium complexes for optoelectronic applications. Here we report sky-blue-emitting cationic iridium complexes with electron-deficient oxadiazole/triazine-type counter-anions and their use for highly efficient solution-processed organic light-emitting diodes (OLEDs). A sky-blue-emitting complex [Ir(meoppy)2(dmapzpy)]+ (meoppy is 4-methoxy-2-phenylpyridine
抗衡阴离子控制已成为一种为光电应用调节阳离子铱配合物性能的简便方法。在这里,我们报告与电子不足的恶二唑/三嗪型抗衡阴离子一起发射出天蓝色的阳离子铱络合物,并将其用于高效溶液加工的有机发光二极管(OLED)。天蓝色发光络合物[Ir(meoppy)2(dmapzpy)] +(oppy是4-甲氧基-2-苯基吡啶,dmapzpy是4-二甲基氨基-2-(1 H-吡唑-1-基)吡啶)被开发为磷光阳离子。六氟磷酸盐(PF 6 - ),3,5-二(5-(4-(叔丁基)苯基)-1,3,4-恶二唑-2-基)苯(OXD-7-SO 3 -),4-(4,6-二苯基-1,3,5-三嗪-2-基)苯磺酸钠(TRZ-P-SO 3 - )和3-(4,6-二苯基-1,3,5-三嗪吡啶-2-基)苯磺酸盐(TRZ-M-SO 3 -)已分别开发为配合物R,1、2和3中的抗衡阴离子。在掺杂的薄膜中,复合物提供类似的天蓝色发射峰,其峰值约为472