【摘要】 利用环金属配体2-(4′,6′-二氟苯基)吡啶(dfppy)和副配体2,2′-联嘧啶(bpm)合成了一个铱配合物[Ir(dfppy)2(bpm)]Cl,通过1HNMR,质谱,元素分析及红外光谱对其进行了表征,并且测定了其晶体结构。同时利用得到的中间配合物[Ir(dfppy)2(bpm)]+[Ir(dfppy)2(Cl)2]-晶体结构讨论了配合物形成过程。对配合物[Ir(dfppy)2(bpm)]Cl的紫外可见吸收光谱和发光光谱的研究表明,其常温发射位于609nm处,初步推测该磷光发射可能来自金属到配体的电荷转移(MLCT)跃迁和配体自身π→π*跃迁(LC)的混合。更多还原

【Abstract】 An IrⅢ complex [Ir(dfppy)2(bpm)]Cl was synthesized with 2-(4’,6’-difluorophenyl)pyridine (dfppy) as cy-lcometalated ligand and 2,2’-bipyrimidine (bpm) as ancillary ligand. It was characterized by 1H NMR, mass spectr-ometry, element analysis and FTIR spectra, and its crystal structure was measured. At the same time, the forma-tion of this complex was discussed by the crystal structure of mediated complex [Ir(dfppy)2(bpm)]+[Ir(dfppy)2(Cl)2]-. The UV-Vis absorption and photoluminescence spectra of [Ir(dfppy)2(bpm)]Cl were recorded. The emission at room temperature peaked at 609 nm, and it was supposed that the phosphorescence might originate from the mixture of the MLCT (metal-to-ligand charge transfer) transition and ligand-centered π → π* transition. CCDC: 671986, [Ir(dfppy)2(bpm)]Cl; 671987, [Ir(dfppy)2(bpm)]+[Ir(dfppy)2(Cl)2]-.更多还原