Sky-blue iridium complexes with pyrimidine ligands for highly efficient phosphorescent organic light-emitting diodes
作者:Haiyang Ma、Di Liu、Jiuyan Li、Yongqiang Mei、Deli Li、Yong Ding、Wenkui Wei
DOI:10.1039/d0nj01262a
日期:——
well-known commercial sky-blue iridium complex FIrpic (bis(4′,6′-difluorophenylpyridinato) iridium(III) picolinate, 475 nm), the phosphorescence of these complexes is hypsochromically shifted by 16–18 nm, more closely approaching standard blue light. They have high phosphorescence quantum yields in solution. The phosphorescent OLEDs employing these complexes as doped emitters display impressive performance
对于有机发光二极管(OLED)的基础研究和工业应用而言,蓝色铱磷光体始终是珍贵且理想的。含2-(3,5-双(三氟甲基)苯基)-嘧啶(tfmphpm)或2-(2,4-二氟苯基)-嘧啶(dfppm)的三种杂多环金属化铱(III)配合物Ir1,Ir2和Ir3 )作为主要配体,而2-(3-(三氟甲基)-1 H-吡唑-5-基)吡啶(fppz)或2-(5-(4-(三氟甲基)苯基)-2 H -1,2 1,4-三唑-3-基)吡啶(Htaz)作为辅助配体被开发用于有机发光二极管。由于引入了含有强磁场的CF 3辅助配体,并且引入了吸电子F或CF 3在C ^ N环金属配体的HOMO躺在的C相关芳环上的这些基团上,这些Ir(III)配合物的磷光在457-459 nm达到峰值。与著名的商业天蓝色铱络合物FIrpic(bis(4',6'-difluorophenylpyridinato)铱(III)吡啶甲酸(475