一种有机电致发光共聚物的制备和性能  

Synthesis and EL Properties of Novel Conjugated Copolymers

作　　者：杨坚[1] 吴宏滨[1] 侯琼[1] 黄飞[1] 阳仁强[1] 杨伟[1] 曹镛[1] 

机构地区：[1]华南理工大学高分子电致发光材料与器件研究所,广东广州510640

出　　处：《发光学报》2003年第6期612-615,共4页Chinese Journal of Luminescence

基　　金：国家自然科学基金资助项目(29992530)

摘　　要：采用Suzuki方法合成了9,9-二辛基芴与萘并硒二唑的两种无规共聚物并研究了其紫外光谱、光致发光和电致发光性能。两种聚合物的电致发光波长为650～666nm,均为发饱和红光的LED材料,其电致发光外量子效率最高达到了1.05％。随着共聚物中萘并硒二唑含量的增加,共聚物的光致发光和电致发光的发射波长均有少量红移。证明了根据共轭高聚物链内能量转移原理,在聚芴链中引入不同含量的窄带隙杂环单元可实现对聚芴发光颜色的调节。The notion that π -conjugated polymeric materials should possess interesting and useful electronic and optical properties is now well established in the scientific literature. Light-emitting polymers have revolutionized the flat-panel display technology. A large number of light-emitting polymers have been introduced during the last 10 years. Among these polymers, polyfluorenes are important class of electroactive and photoactive materials. In this thesis, a palladium-catalyzed Suzuki coupling method was used to synthesize a series of novel soluble conjugated copolymers from 9, 9-dioctyfluorine (DOF) and 2, 1, 3-naphthoselena- diazole (NSeD) . The feed ratio of DOF to NSeD are 95:5 and 99:1. The polymers are materials emitting saturated red color (650-666nm) light. The maximal emissions of devices slightly red-shifted gradually with increasing NSeD's content. The maximal external quantum efficiency of the polymer light-emitting devices (PLED) reached 1.05%. The result indicated that the use of conjugated polyfluorene as wide band- gap segment with a small amount of narrow band-gap dopant in the polymer main chain could provide a new way to combine high quantum efficiency along with color turning ability.

关 键 词：有机电致发光共聚物 9 9-二辛基芴 萘并硒二唑 紫外光谱 光致发光 发光波长 LED材料 量子效率 光谱红移 

分 类 号：TN383.1[电子电信—物理电子学] TN873.3