芴-噁二唑类聚合物的合成及光谱特性  

Synthesis and Spectral Characteristics of Copolymers of Fluorene and Oxadiazole

作　　者：柯加良[1] 杨伟[1] 蒋昌云[1] 张赤[1] 侯琼[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,广州510641

出　　处：《化学通报》2004年第1期54-56,53,共4页Chemistry

基　　金：国家自然科学基金 (5 0 1730 0 8);科技部 973基金 (2 0 0 2 CB6 1340 2 )资助项目

摘　　要：通过缩聚反应 ,制得了高分子量的线型和超支化的芴 - 二唑类聚合物 ,它们均可溶于常用的有机溶剂。在固态薄膜时 ,它们的紫外 -可见光吸收光谱在大约 398nm和 376 nm处有两个强的吸收峰。它们的薄膜 PL光谱在蓝光波长范围内有强发射峰 ,薄膜 PL效率约为 16 %。电化学测试显示它们的 LUMO能级比芴的均聚物高 ,而与钙、镁这样典型的阴极材料的功函数较接近 。Linear and hyperbranched copolymers of fluorene and oxadiazole with high molecular weight are synthesized by a polycondensation reaction. The resulting copolymers are soluble in common organic solvents. Their UV-Vis absorption spectra show two sharp bands at about 398 and 376nm in solid film. The two polymers fluorescence in the blue-light range with quantum yields of about 16% in solid film. The CV measurements show that the LUMO levels of them are much higher than that of the fluorene homopolymer and close to the work functions of typical cathode materials such as Ca and Mg, indicating a favorable electron injection and transport property of these copolymers.

关 键 词：芴-噁二唑类聚合物 合成 光谱特性 缩聚反应 电子传输性能 电子亲合势 

分 类 号：O633[理学—高分子化学]