A series of donor‐acceptor copolymers with dicyclopenta[cd,jk]pyrene and dicyclopenta[cd,lm]perylene acceptor units was prepared via palladium catalyzed cyclopenta‐annulation reactions. The acceptor units were paired with diethynyl containing donor groups based on benzo[1,2‐b:4,5‐b’]dithiophene, thieno[3,2‐b]thiophene, and 4‐octyl‐4H‐dithieno[3,2‐b:2′,3′‐d]pyrrole to create six polymer variants. The cyclopentannulation polymerization resulted in copolymers with molecular weights (Mn) of 6–14 kDa and broad light absorption in the visible region with band gaps of 1.38–1.85 eV. The synthetic methodology, as well as optoelectronic properties, including thin‐film absorption and cyclic voltammetry, of the donor‐acceptor copolymers are presented.

中文翻译：

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双环戊[cd，jk] and和双环戊[cd，lm] per受体的环戊环聚合反应的供体-受体共聚物

通过钯催化的环戊环化反应，制备了一系列带有双环戊[cd，jk] py和双环戊[cd，lm] per的给体-受体共聚物。受体单元与基于苯并[1,2-b：4,5-b']二噻吩，噻吩并[3,2-b]噻吩和4-辛基-4H-二噻吩并[3， 2-b：2'，3'-d]吡咯生成六个聚合物变体。环戊环聚合反应产生的共聚物的分子量（Mn）为6–14 kDa，可见光区域的光吸收较宽，带隙为1.38–1.85 eV。本文介绍了供体-受体共聚物的合成方法以及光电性能，包括薄膜吸收和循环伏安法。