含有萘并噻二唑的红光电致发光聚合物的合成和性能研究  

Synthesis and Properties of a Novel Red Electroluminescent Conjugated Polymer Containg Naphthothiadiazole

作　　者：黄哲[1] 张勇[1] 曾文进[1] 许伟[1] 杨坚[1] 彭俊彪[1] 曹镛[1] 

机构地区：[1]华南理工大学高分子光电材料与器件研究所特种功能材料教育部重点实验室,广州510640

出　　处：《高等学校化学学报》2007年第3期584-587,共4页Chemical Journal of Chinese Universities

基　　金：国家自然科学基金(批准号:50433030)资助

摘　　要：以2,7-二溴-9,9-双(N,N-二甲基丙胺基)芴与4,7-双(5-溴-2-噻吩)-2,1,3-萘并噻二唑为共聚单体,通过Suzuki偶合反应合成按不同比例共聚的一系列共轭聚合物,并对它们的电致发光性能进行了研究.结果表明,所有的聚合物均在高功函数金属铝作阴极的器件中具有较高的发光效率,最大电致发光外量子效率为1.3%,好于目前广泛应用的低功函数金属(如钡,钙等)作阴极的发光效率.A series of aminoalkyl-substituted polyfluorene copolymers with 4,7-dithien-2-yl-2,1,3- naphthothiadiazole（SNS） with different contents were synthesized by Suzuki coupling reaction. The polymers are soluble in organic solvent, such as chloroform, toluene. All the polymers emit red light （more than 700 nm） under UV excitation in the solid state. It was found that the PFN-SNS polymers show a good device performance when high work-function metals, such as Al, are used as the electron-injection cathode replacing conventional low work-function cathodes such as Ca and Ba. The maximum external quantum efficiency is more than 1.3% with Al as cathode.

关 键 词：高功函数金属 共轭聚合物 电致发光 

分 类 号：O631[理学—高分子化学]