中文摘要：

采用Pd催化的Stille偶联方法合成了3种不同分子量的噻吩类共轭交替共聚物,并对共聚物的热性能、光学性能和电化学性能进行了测试.所得3种共聚物的紫外-可见吸收光谱分别在465,455和460nm处出现最大吸收,荧光光谱发射峰分别在572,530和533nm处.电化学测试表明,共聚物均具有较窄的电化学带隙能,分别为1.60,1.46和1.45eV.

英文摘要：

Three conjugated alternating thiophene-based copolymers with different molecular weight are synthesized by palladium-catalyzed Stille cross coupling reaction. The thermal stability, electrochemical and optical properties of copolymers are examined. The maximum absorption peaks of UV-vis absorption spectra of the copolymers are found at 465,455 and 460 nm, respectively. The fluorescence emission spectra exhibites maximum emission at 572,530 and 533 nm. The electrochemical experiment results demonstrate that these copolymers have low electrochemical bandgap of 1.60,1.46 and 1.45 eV.