新型含铱共聚物的合成及表征  

Synthesis and characterization of a novel copolymer containing iridium complex

作　　者：徐清[1] 刘羡春[1] 侯琳熙[1] 肖通虎[1] 

机构地区：[1]宁波大学材料科学与化学工程学院,新型功能材料及其制备科学国家重点实验室培育基地,浙江宁波315211

出　　处：《功能材料》2009年第11期1780-1782,1786,共4页Journal of Functional Materials

基　　金：国家自然科学基金资助项目(20774083);浙江省自然科学基金资助项目(Y407288);宁波市自然科学基金资助项目(2006A610066);宁波大学科研基金资助项目(XK200570);宁波大学王宽诚幸福基金

摘　　要：利用2-对甲苯基吡啶(ptpy)、对乙烯基苯甲酸(VBA)和三水合氯化铱(IrCl3·H2O)配位,得到了铱配合物单体Ir(ptpy)2(VBA),再将其与乙烯基咔唑共聚制得了一种含铱配合物的新型聚合物。通过元素分析、FT-IR光谱和1H NMR谱等对Ir(ptpy)-2(VBA)和聚合物的结构进行了表征。凝胶色谱仪(GPC)测试结果表明,聚合物的数均分子量(Mn)为8230。此外还研究了Ir(ptpy)2(VBA)和聚合物的紫外-可见(UV-vis)吸收光谱和光致发光(PL)光谱。光致发光光谱测试结果表明,聚合物在固态时,主体咔唑基团向客体铱配合物基团有着较为有效的能量转移。聚合物在501nm处有较强的金属配合物三重态的磷光发射峰,是一种绿色磷光材料。A new iridium complex Ir（ptpy）2 （VBA） was synthesized by reaction of 2-（p-tolyl）pyridine, 4-vinylbenzoic acid, and iridium trichloride hydrate, and then the iridium complex was copolymerized with N-vinyl carbazole to form a polymer. The polymer and iridium complex were characterized by elemental analysis, 1H NMR, and FT-IR. By the result of gel permeation chromatography （GPC）, the number average molecular weight of the polymer was calculated to be 8230, according to the polystyrene standard calibration curve. Furthermore, the UV-vis absorption spectra and photoluminescence spectra of the polymer and iridium complex were investigated. The results of their photoluminescence spectra indicate that, the polymer shows a strong phosphorescence peaks at 501nm at room temperature, and the energy of the carbazole groups is transferred ef- fectively to the iridium complex groups in the polymer in the solid state. These results suggest the polymer to be a potential candidate for green phosphorescent material.

关 键 词：铱 磷光材料 聚合物 合成 

分 类 号：O614.82[理学—无机化学]