Soluble polynorbornenes with pendant carbazole derivatives as host materials for highly efficient blue phosphorescent organic light-emitting diodes
作者:Jun Ha Park、Tae-Wook Koh、Youngkyu Do、Min Hyung Lee、Seunghyup Yoo
DOI:10.1002/pola.26005
日期:2012.6.15
We report novel host polymers for a high‐efficiency polymer‐based solution‐processed phosphorescent organic light‐emitting diode with typical blue‐emitting dopant bis(4,6‐difluorophenylpyridinato‐N,C2)iridium(III) picolinate (FIrpic). The host polymers, soluble polynorbornenes with pendant carbazole derivatives, N‐phenyl‐9H‐carbazole (P1), N‐biphenyl‐9H‐carbazole (P2), and 9,9′‐(1,3‐phenylene)bis‐9H‐carbazole
我们报告了一种新型的主体聚合物,该聚合物用于具有典型蓝色发射掺杂剂的双(4,6-二氟苯基吡啶并氨基-N,C 2)吡啶甲酸铱(III)(FIrpic)的高效聚合物基溶液处理的磷光有机发光二极管。主机聚合物,具有侧挂咔唑衍生物溶于降冰片烯,Ñ苯基9 ħ -咔唑(P1),ñ -联苯9 ħ -咔唑(P2),和9,9' - (1,3-亚苯基)双9 H-咔唑(mCP)(P3)是通过使用Pd(II)催化剂与1-辛烯链转移剂结合使用降冰片烯单体进行乙烯基加成聚合而有效合成的。该聚合物表现出具有高分解(热稳定性高Ť D5 > 410℃)和玻璃化转变温度(Ť克≈268℃)。HOMO(约-5.5至-5.7 eV)和LUMO(约-2.0至-2.1 eV)的三重态能量约为2.7-3.0 eV,表明该聚合物适合用作蓝色发光体的主体材料。在基于包含P1 - P3的发射层制造的固溶处理器件中主机掺杂用各种浓度的FIrpi