三个绿光铱(Ⅲ)配合物的合成和光电性质  

Synthesis and Opto-electronic Property of Three Green Iridium(Ⅲ)Complexes

作　　者：周永慧[1] 徐秋蕾 刘晨璐 徐晶晶[1] ZHOU Yong-Hui;XU Qiu-Lei;LIU Chen-Lu;XU Jing-Jing(Collaborative Innovation Center for Atmospheric Environment and Equipment Technology,College of Chemistry and Materials,Nanjing University of Information Science&Technology,Nanjing 210044,China;Key Lab for Special Functional Materials of Ministry of Education,College of Materials,Henan University,Kaifeng,Henan 475004,China)

机构地区：[1]南京信息工程大学化学与材料学院,大气环境与装备技术协同创新中心,南京210044 [2]河南大学材料学院,河南大学特种功能材料实验室,开封475004

出　　处：《无机化学学报》2020年第7期1267-1274,共8页Chinese Journal of Inorganic Chemistry

摘　　要：采用2-(4-三氟甲基苯基)吡啶(tfmppy)为主配体,分别以四(4-氟苯基)苯基膦酰亚胺(F-tpip)、四(4-甲氧基苯基)膦酰亚胺(MeO-tpip)和四(1-萘基)膦酰亚胺(tnin)为辅助配体合成了3个铱(Ⅲ)配合物((tfmppy)2Ir(F-tpip)、(tfmppy)2Ir(MeO-tpip)和(tfmppy)2Ir(tnin))。其结构通过核磁氢谱、质谱、元素分析和单晶结构测定进行了验证。配合物(tfmppy)2Ir(F-tpip)和(tfmppy)2Ir(MeO-tpip)属于三方晶系P1空间群,配合物(tfmppy)2Ir(tnin)属于三斜晶系R3c空间群。3个配合物都是绿光材料,具有类似的发光颜色和发光效率((tfmppy)2Ir(F-tpip):λem=526 nm,Φ=0.52;(tfmppy)2Ir(MeO-tpip):λem=523 nm,Φ=0.44;(tfmppy)2Ir(tnin):λem=522 nm,Φ=0.48)。3个配合物的循环伏安曲线都显示出了良好的氧化还原性质。(tfmppy)2Ir(F-tpip)、(tfmppy)2Ir(MeO-tpip)和(tfmppy)2Ir(tnin)的HOMO能级分别为-5.67、-6.08和-5.69 eV,其LUMO能级分别为-3.29、-3.61和-3.22 eV。This work reports the synthesis and properties of three iridium(Ⅲ) complexes((tfmppy)2Ir(F-tpip),(tfmppy)2Ir(MeO-tpip) and(tfmppy)2Ir(tnin)) with 2-(4-(trifluoromethyl)phenyl)pyridine(tfmppy) as main ligand and tetra(4-fluoropheny) imidodiphosphinate(F-tpip), tetra(4-methoxypheny)imidodiphosphinate(MeO-tpip), tetra(naphthalen-1-yl)imidodiphosphinate(tnin) as ancillary ligands, respectively. Their structures were confirmed by 1H NMR, MS(MALDI-TOF), elemental and single crystal analysis. Both(tfmppy)2Ir(F-tpip) and(tfmppy)2Ir(MeO-tpip) complexes belong to P1 space group of triclinic crystal system. The complex(tfmppy)2Ir(tnin) belongs to R3c space group of trigonal crystal system. All the complexes are green materials with similar emission color and photoluminescence quantum efficiency((tfmppy)2Ir(F-tpip): λem=526 nm, Φ=0.52;(tfmppy)2Ir(MeO-tpip): λem=523 nm, Φ=0.44;(tfmppy)2Ir(tnin): λem=522 nm, Φ=0.48). In addition, the excited state lifetimes of(tfmppy)2Ir(F-tpip),(tfmppy)2Ir(MeO-tpip)and(tfmppy)2Ir(tnin) were 2.51, 2.00 and 3.88 μs, respectively. Furthermore, they all showed good reversible redox peaks in the cyclic voltammetry curves, and their energy levels were also calculated((tfmppy)2Ir(F-tpip): EHOMO=-5.67 eV, ELUMO=-3.29 eV;(tfmppy)2Ir(MeO-tpip): EHOMO=-6.08 eV, ELUMO=-3.61 eV;(tfmppy)2Ir(tnin): EHOMO=-5.69 eV, ELUMO=-3.22 eV). CCDC: 1907488,(tfmppy)2Ir(F-tpip);1907490,(tfmppy)2Ir(MeO-tpip);1907489,(tfmppy)2Ir(tnin) ·H2O.

关 键 词：铱(Ⅲ)配合物 磷光材料 绿光发射 晶体结构 电化学 

分 类 号：O614.825[理学—无机化学]