两种新型离子型铱配合物的合成及其性能研究

Synthesis and Light-physical Properties of Two Novel Ionic Iridium Complexes

以4,4'-二溴-2,2'-联吡啶、3,5-二甲基苯硼酸、2,4-二氟苯硼酸为原料,制得两个联吡啶衍生物(L1,L2);以2-氯喹啉和3,5-二甲基苯硼酸为原料制得主配体2-(3,5-二甲基苯基)喹啉;主配体与IrCl_3反应制得二聚体[Ir(mqu)2(μ-Cl_2)]_2;二聚体分别与L1和L2反应合成了两种可用于LECs的以铱为内核的新型离子型铱配合物(Ir-1,Ir-2),其结构经~1H NMR,IR,MS(ESI)和元素分析表征。并对其光物理性能和热稳定性能进行了研究。结果表明:配合物Ir-1的CIE坐标为(0.58,0.42)、Ir-2的CIE坐标为(0.61,0.39),二者的最大发射波长分别位于591和623 nm处;配合物Ir-1和Ir-2均具有较好的热稳定性能,分解温度分别为339℃和340℃。

Two bipyridine derivatives(L1,L2)were synthesized from 4,4′-dibromo-2,2′-bipyridine,3,5-dimethylbenzeneboronic acid and 2,4-difluorophenylboronic acid.A chloride-bridgeed dimer[Ir(mqu)2(μ-Cl 2)]2 was prepared by reaction of IrCl 3 with 2-(3,5-dimethylphenyl)quinoline which was synthesized from 2-chloroquinoline and 3,5-dimethylbenzeneboronic.Two novel ionic iridium complexes(Ir-1 and Ir-2),with 2-(3,5-dimethylphenyl)quinoline as primary ligand,L1 and L2 as N^N ancillary ligands,were obtained.The structures were characterized by 1 H NMR,IR,MS(ESI)and elemental analysis.The light-physical properties and thermostability of the complexes were investigated.The results showed that Ir-1 and Ir-2 produced a strong photoluminescence at 591 and 623 nm,and CIE coordinates of(0.58,0.42)and(0.61,0.39),respectively.The complexes exhibited good performance in thermostability with the decomposition temperature up to 339℃for Ir-1 and 340℃for Ir-2,respectively.