新型黄光铱磷光配合物的合成、表征及性能研究  

Synthesis,Characterization and Light-Physical Property of a New Yellow-Emitting Iridium Complex

作　　者：李杰[1] 晏彩先[1] 姜婧[1] 余娟[1] 叶青松[1] 常桥稳[1] 刘伟平[1] YAN Caixian;JIANG Jing;YU Juan;YE Qingsong;CHANG Qiaowen;LIU Weiping(State Key Laboratory of Advanced Technologies for Comprehensive Utilization of Platinum Metals, Kunming Institute of Precious Metals, Kunming , Yunnan 650106, China)

机构地区：[1]昆明贵金属研究所稀贵金属综合利用新技术国家重点实验室,云南昆明650106

出　　处：《化学世界》2018年第5期288-293,共6页Chemical World

基　　金：云南省省院省校科技合作(No.2015IB019);昆明市科技计划(No.2016-1-G-03331)资助项目

摘　　要：通过在2,4-二氯吡啶上引入3-联苯基,合成了一种以2,4-二(3-联苯)吡啶为主配体,以2,2,6,6-四甲基-3,5-庚二酮为辅助配体的新型有机电致磷光材料,通过元素分析、红外光谱、~1H NMR和质谱对产物进行了结构表征,利用X射线单晶衍射仪测定了配合物的晶体结构。并对其用紫外-可见吸收、光致发光、热稳定性等进行研究。研究表明,配合物在395和465nm处存在单重态~1MLCT(金属到配体的电荷跃迁)和三重态~3MLCT的吸收峰;其初始分解温度为405℃(对应于10%质量损失),最大发射波长为570nm,是一种可用于白色有机电致发光器件的新型黄色发光磷光材料。A new yellow-emitting iridium complex was synthesized by introducing the biphenyl substituent into the 2,4-position of pyridine ring.The complex was characterized by element analysis,IR,MS,and ^1H NMR.X-ray diffraction was used to confirm the crystal structure of iridium complex.The UV-Vis absorption and photoluminescence of the iridium complex were systematically investigated.The complex shows strong singlet and triplet metal to ligand charge-transfer absorption at 395 and 465 nm,respectively.The room-temperature phosphorescence peak for iridium complex is located at 570 nm,corresponding to yellow light.Thermogravimetric analysis（TGA）thermograms show that the complex has a better performance in thermo-stability and the decomposition temperature is almost up to 405℃.This new yellowemitting iridium complex has great potential in white organic light-emitting device.

关 键 词：有机电致发光 Ir(Ⅲ)化合物 黄光磷光材料 互补色 光物理性能 

分 类 号：O627.8[理学—有机化学]