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中文摘要：
采用二氯甲烷为溶剂,无水碳酸钾为缚酸剂,在25℃温和条件下,以2-苯基-4-甲基喹啉铱(III)氯桥二聚体[(4m2pq)2Ir(μ-Cl)2Ir(4m2pq)2]和乙酰丙酮(Hacac)进行配位,反应合成了新型铱(Ⅲ)配合物[(4m2pq)2Ir(acac)]。通过核磁共振氢谱(1H NMR)、碳谱(13C NMR)、X射线单晶衍射等确定分子结构,利用紫外-可见吸收光谱、发射光谱对其光物理性质进行研究。结果表明:(4m2pq)2Ir(acac)的单晶结构属三斜晶系,空间群为P1;(4m2pq)2Ir(acac)在二氯甲烷溶液中呈橙光发射,发射峰为597 nm,磷光寿命0.33μs,量子效率达50.4%。以(4m2pq)2Ir(acac)为客体掺杂在CBP中,制备了结构为ITO/NPB(30 nm)/CBP:(4m2pq)2Ir(acac)(质量分数6%和8%,20 nm)/BCP(10 nm)/Alq3(20 nm)/LiF(1 nm)/Al(150 nm)的橙色磷光有机电致发光器件,器件的最大亮度达到39 667 cd/m2,发射峰位于597 nm,最大电流效率为14.2 cd/A,最大功率效率为8.1 lm/W。
英文摘要：
A metal complex [(4m2pq)2Ir(acac)] was synthesized under mild condition of dichloromethane as solvent and potassium carbonate as deacid reagent at 25 ℃,where '4m2pq' is the ortho-C-deprotonated derived from 4-methyl-2-phenylquinoline and 'acac' is derived from pentane-2,4-dione.The molecular structure of(4m2pq)2Ir(acac) was characterized by 1H NMR spectral,13C NMR spectrum and X-ray diffraction.UV-visible absorption spectrum,photoluminescence spectrum,luminescence quantum yields and phosphorescence lifetime were measured for studying photophysical properties of(4m2pq)2Ir(acac).The single crystal structure of(4m2pq)2Ir(acac) is in triclinic and space group P1.The orange phosphorescent emission with high fluorescence quantum efficiencies of 50.4% and lifetime of 0.33 μs can be observed with peaks at 597 nm in degassed CH2Cl2 solution at room temperature.Moreover,(4m2pq)2Ir(acac) was utilized as phosphorescence dopant in OLEDs with the structures of ITO/NPB(30 nm)/ CBP∶(4m2pq)2Ir(acac)(mass fraction of 6% and 8%,20 nm)/BCP(10 nm)/Alq3(20 nm)/LiF(1 nm)/Al.The device showed orange emission at 597 nm,maximum brightness of 39 667 cd/m2,current efficiency of 14.2 cd/A,and power efficiency of 8.1 lm/W.
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