Efficient organic light-emitting diodes with low efficiency roll-off using iridium emitter with 2-(5-phenyl-1,3,4-oxadiazol-2-yl)phenol as ancillary ligand
作者:Yi-Ming Jin、Cheng-Cheng Wang、Li-Sha Xue、Tian-Yi Li、Song Zhang、Xuan Liu、Xiao Liang、You-Xuan Zheng、Jing-Lin Zuo
DOI:10.1016/j.jorganchem.2014.04.030
日期:2014.8
5-trifluorophenylpyridine as a monoanionic cyclometalated ligand, 2-(5-phenyl-1,3,4-oxadiazol-2-yl)phenol, 2-(5-(4-fluorophenyl)-1,3,4-oxadiazol-2-yl)phenol and 2-(5-(4-trifluoro-methylphenyl)-1,3,4-oxadiazol-2-yl)phenol as ancillary ligands, three new heteroleptic iridium(III) complexes (Ir(F3,4,6ppy)2POP, Ir(F3,4,6ppy)2FPOP and Ir(F3,4,6ppy)2CF3POP) were developed. All complexes are green phosphors (λmax = 503–521 nm)
使用2,4,5-三氟苯基吡啶作为单阴离子环金属化配体,2-(5-苯基-1,3,4-恶二唑-2-基)苯酚,2-(5-(4-氟苯基)-1,3,三种新型杂配铱(III)络合物作为辅助配体,分别以4-恶二唑-2-基)苯酚和2-(5-(4-三氟-甲基苯基)-1,3,4-恶二唑-2-基)苯酚(Ir (F 3,4,6 ppy)2 POP,Ir(F 3,4,6 ppy)2 FPOP和Ir(F 3,4,6 ppy)2 CF 3 POP)已经开发出来。所有配合物是绿色磷光体(λ最大 = 503-521纳米)与CH的12-18%的光致发光量子效率的产率2氯2溶液分别在室温下。具有ITO / TAPC(1,1-双(4-(二-对甲苯甲氨基)苯基)环己烷,60 nm)/ Ir(F 3,4,6 ppy)2结构的有机发光二极管(OLED )2 POP(6、8、10重量%):SimCP2(双(3,5-二(9 H-咔唑-9-基)苯基)二苯基硅烷,30