Seven 5,5′-distyryl-3,3′-bithiophene derivatives (1–7) with A-π-A or D-π-D structures were synthesized and their photophysical, electrochemical, and thermal properties were investigated. Photoluminescence experiments showed that the compounds gave a high fluorescence emission. In photophysical studies, compound 2, which has a nitro substituent, showed significant solvatochromism, thermochromism and aggregation induced emission (AIE) characteristics. Cyclic voltammetry and thermogravimetric analysis indicated that 2 had good electron affinity and thermal stability. The molecular structures and packing arrangements were identified by single crystal X-ray diffraction. Theoretical calculations for the electronic transitions explained the observed special optical behaviors of 2 well. The excellent optical properties of 2 made it a promising emitter for optoelectronics.

七5,5'-二苯乙烯基-3,3'-联噻吩衍生物（1 - 7）与A-π-A或d-π-d结构的合成和它们的光物理，电化学和热性能进行了研究。光致发光实验表明该化合物具有高荧光发射。在光物理研究中，具有硝基取代基的化合物2显示出显着的溶剂变色，热变色和聚集诱导发射（AIE）特性。循环伏安法和热重分析表明2具有良好的电子亲和力和热稳定性。通过单晶X射线衍射鉴定分子结构和堆积排列。电子跃迁的理论计算解释了观察到的2孔特殊光学行为。的优良的光学特性2使其成为光电有希望的发射极。