A variety of 2,2'-bithiophene derivatives with different π-conjugated arms at the 3,3'-positions have been synthesized and evaluated as suitable building blocks for the preparation of functional conjugated polymers. Polymerizations have been carried out through either Horner-Wadsworth-Emmons (HWE) or Stille cross coupling reactions with appropriate comonomers. Whereas the polymerization of 5,5'-diformyl- and 5,5'-dibromo-2,2'-bithiophenes did not extend beyond a small number of monomer units, 5,5'-bis(4-formylphenyl)-2,2'-bithiophenes formed polymers with high molecular weights, narrow polydispersity and good thermal stability. A preliminary study of the UV and photoluminescence properties of the prepared compounds is also presented.

合成了各种在3,3'-位置具有不同π-共轭臂的2,2'-联噻吩衍生物，并将其作为制备功能性共轭聚合物的合适结构单元进行了评估。聚合是通过霍纳-沃兹沃思-埃蒙斯（HWE）或斯蒂勒交叉偶联反应与合适的共聚单体进行的。尽管5,5'-二甲酰基-和5,5'-二溴-2,2'-联噻吩的聚合反应并未超出少数单体单元5,5'-双（4-甲酰基苯基）-2的聚合， 2'-联噻吩形成的聚合物具有高分子量，窄的多分散性和良好的热稳定性。还介绍了所制备化合物的紫外和光致发光性质的初步研究。