一种星型结构芳胺类空穴传输材料的合成及性能研究  

Synthesis and Performance Study of A Star-shaped Aromatic Amine Hole Transport Material

作　　者：韩蒙蒙 申奥 邓书洋 杨振强[1] 李岩[1] HAN Meng-meng;SHEN Ao;DENG Shu-yang;YANG Zhen-qiang;LI Yan(Henan Academy of Sciences Institute of Chemistry Co.Ltd.,Zhengzhou 450002,Henan,China;Henan Academy of Sciences Institute of Chemistry,Zhengzhou 450002,Henan,China;School of Materials Science and Engineering,Henan Normal University,Xinxiang 453007,Henan,China)

机构地区：[1]河南省科学院化学研究所有限公司,河南郑州450002 [2]河南省科学院化学研究所,河南郑州450002 [3]河南师范大学材料科学与工程学院,河南新乡453007

出　　处：《合成材料老化与应用》2024年第6期34-36,共3页Synthetic Materials Aging and Application

基　　金：河南省科技研发计划联合基金资助项目(225200810094);河南省科技攻关计划(242102230169);河南省科学院基本科研业务费项目(240603048);河南省科学院创新平台建设项目(23100303);河南省科学院特聘研究员项目(230503006)。

摘　　要：空穴传输材料是一类重要的有机光电功能材料,广泛应用于OLED领域。该文以具有高载流子迁移率的三苯胺为核心骨架,通过偶联反应引入具有优异热稳定性的螺芴和芴基团,设计合成了目标化合物N,N-二(9,9-二甲基-9H-芴-2-基)-9,9'-螺二芴-3-胺。结果表明,目标化合物具有较高的热稳定性,热失重温度为405℃,玻璃化温度为222℃,高于常用小分子空穴传输材料NPB的玻璃化温度(98℃)。此外,通过理论计算,目标化合物的HOMO能级为4.72eV,与常用阳极材料ITO相近,具有较小的势垒值,有利于空穴的注入。目标化合物可作为性能优异的空穴传输材料应用于OLED等光电器件。Hole transport materials are a category of crucial organic photoelectric functional materials and are extensively utilized in the field of OLED.In this article,triphenylamine with high carrier mobility was selected as the core framework,and through a coupling reaction,spirofluorene with remarkable thermal stability and the fluorene group were introduced to synthesize the target compound N,N-bis(9,9-dimethyl-9H-fluoren-2-yl)-9,9'-spirobi[fluoren]-3-amine.The results demonstrate that the target compound possesses relatively high thermal stability,with a weight loss temperature of 405℃ and a glass transition temperature of 222℃,which is higher than the glass transition temperature(98℃)of commonly used small molecule hole transport materials such as NPB.Through theoretical calculation,the target compound has a relatively appropriate HOMO energy level(4.72 eV)similar to that of the commonly used prototype material ITO,and has a small potential barrier value,which is conducive to the injection of holes.It can be employed as a hole transport material with outstanding performance in optoelectronic devices such as OLED.

关 键 词：有机发光二极管 空穴传输材料 芳胺 螺芴 

分 类 号：O625[理学—有机化学]