Synthesis,crystal structure and photo-physical properties of tris(4-methyl-2,5-diphenylpyridine)iridium for OLED  

OLED用绿色磷光配合物Ir(bmppy)_(3)的合成、晶体结构及光物理性质

作　　者：FENG Yangyang XU Mingming WANG Hongyou ZHU Yunyao LUO Yuan LEI Huaidong CHEN Honglai 冯洋洋;许明明;王洪友;朱芸瑶;罗媛;雷怀东;陈洪来(贵研化学材料(云南)有限公司,云南省贵金属新材料控股集团股份有限公司稀贵金属综合利用新技术国家重点实验室,昆明650106)

机构地区：[1]Sino-Platinum Metals Chemical(Yunnan)Co.Ltd.,State Key Laboratory of Advanced Technologies for Comprehensive Utilization of Platinum Metals,Sino-Platinum Metals Co.Ltd.,Kunming 650106,China

出　　处：《贵金属》2024年第3期28-32,共5页Precious Metals

基　　金：云南贵金属实验室科技计划项目(YPML-2022050230);云南省金属有机分子材料与器件重点实验室(202205AD160053)。

摘　　要：Organic light-emitting diodes(OLEDs)have important applications in the field of next-generation displays and lighting,and phosphorescent iridium complexes are an important class of electroluminescent phosphorescent materials.In this paper,Ir(bmppy)_(3),tris(4-methyl-2,5-diphenylpyridine)iridium,was synthesized and elvaluted for photo-physical characteristics.Single crystals suitale for X-ray diffraction(XRD)were grown from a mixture solvent of dichloromethane and absolute ethanol.The composition and structur of Ir(bmppy)_(3)were determined by element analysis,NMR spectra and XRD.The complex crystallizes in the monoclinic symmetry with the space group P21/c with a slightly distorted octahedral configuration.As measured by UV-Visible and photoluminescence spectra,Ir(bmppy)_(3) displays a maximum emission at at 527 nm at ambient temperature,a typical green-emitting profile.The complex has potential for application in the OLED industry.有机发光二极管(OLEDs)在新一代显示和照明领域有着重要的应用,磷光铱配合物是一类重要的电致磷光材料。本文以三(4-甲基-2,5-二苯基吡啶)(bmppy)为主配体,合成了均配型铱磷光配合物Ir(bmppy)_(3),从二氯甲烷和无水乙醇的混合溶剂中培养得到配合物的单晶。通过元素分析、核磁共振谱(NMR)和单晶X射线衍射(XRD)表征了配合物的组成和化学结构,配合物呈单斜晶系,空间群为P21/c,配合物呈稍微扭曲的八面体构型。采用紫外可见光谱和光致发光光谱研究了配合物的光物理性能,室温下,配合物的最大发射波长为527 nm,是一种绿色磷光分子材料,有望在OLED产业中得到应用。

关 键 词：OLED iridium complex phosphorescent material crystal structure photo-physical properties Ir(bmppy)_(3) 

分 类 号：O627.8[理学—有机化学]