Cationic Iridium Complexes with 5-Phenyl-1<i>H</i>-1,2,4-triazole Type Cyclometalating Ligands: Toward Blue-Shifted Emission
作者:Xiaoxiang Wang、Shirun Wang、Fangfang Pan、Lei He、Lian Duan
DOI:10.1021/acs.inorgchem.9b01433
日期:2019.9.16
Four cationic iridium complexes with 5-phenyl-1H-1,2,4-triazole (phtz) type cyclometalating ligands (C^N) and different ancillary ligands (N^N), namely, [Ir(dphtz)2(bpy)]PF6 (1), [Ir(dphtz)2(pzpy)]PF6 (2), [Ir(Mephtz)2(pzpy)]PF6 (3), and [Ir(Mephtz)2(dma-pzpy)]PF6 (4), have been designed, synthesized, and fully characterized (dphtz = 1-(2,6-dimethylphenyl)-3-methyl-5-phenyl-1H-1,2,4-triazole, Mephtz
具有5-苯基-1 H -1,2,4-三唑(phtz)型环金属配体(C ^ N)和不同辅助配体(N ^ N)的四种阳离子铱络合物,即[Ir(dphtz)2(bpy )] PF 6(1),[Ir(dphtz)2(pzpy)] PF 6(2),[Ir(Mephtz)2(pzpy)] PF 6(3)和[Ir(Mephtz)2(dma- pzpy)] PF 6(4)已被设计,合成和充分表征(dphtz = 1-(2,6-二甲基苯基)-3-甲基-5-苯基-1 H -1,2,4-三唑, Mephtz = 1,3-二甲基-5-苯基-1 H-1,2,4-三唑; bpy = 2,2′-联吡啶,pzpy = 2-(1H-吡唑-1-基)吡啶,dma-pzpy = 4-二甲基氨基-2-(1H-吡唑-1-基)吡啶)。在溶液中,配合物1发出有效的黄光(λmax = 547 nm),与原型配合物[Ir(ppy)2(bpy)相比,该黄光蓝移了近40