Copolymers of formula (I):
where each A is S, Se or C═C; each x is an integer from 1 to 4; each R1 is independently H, F, CN or a C
1
-C
20
linear or branched aliphatic group; Ar is one or more substituted or unsubstituted aromatic units; and, n is an integer 5 or greater, can be formed into films or membranes that are useful as active layers in organic electronic device, such as PV solar cells, providing high power conversion efficiencies and good thermal stability. Such copolymers may be synthesized from monomers of formula (II):
by Stille or Suzuki coupling reactions. Such monomers may be synthesized by a variation of the Pinner synthesis.
公式(I)的共聚物:其中每个A是S、Se或C═C;每个x是从1到4的整数;每个R1独立地是H、F、CN或C1-C20线性或支链
脂肪族基团;Ar是一个或多个取代或未取代的芳香族单元;n是一个大于或等于5的整数,可以形成用作有机电子器件中的活性层的薄膜或膜,例如PV太阳能电池,提供高功率转换效率和良好的热稳定性。这种共聚物可以通过Stille或Suzuki偶联反应从公式(II)的单体合成。这种单体可以通过Pinner合成的变体合成。