A composition comprising a copolymer comprising DTP units for use in, for example, low band gap materials including uses in organic photovoltaic active layers. The band gap and other properties can be engineered by copolymerization methods including selection of monomer structure and ratio of monomer components. In addition, a dimer adapted for making alternating copolymers further comprising one first monomer moiety comprising at least one DTP moiety compound covalently linked to one second monomer moiety comprising at least one non-DTP moiety or a different DTP moiety. The composition can be copolymerized to form an alternating copolymer that can be further processed to form a polymeric film used in a printed organic electronic device. A series of novel alternating dithieno[3,2-b:2′,3′-d]pyrrole (DTP)-based donor repeat unit copolymers were designed that would allow fabrication of materials with tailor made electronic and/or mechanical properties that can be easily manipulated through molecules chemical structure and potentially result in long term stability under ambient conditions that can be advantageous for use in organic electronics (e.g., OPVs, OLEDs, OFETs).
一种组合物,包括一种共聚物,其中包括DTP单元,用于制备低带隙材料,包括在有机光伏活性层中使用。可以通过共聚方法来工程化带隙和其他性质,包括选择单体结构和单体组分的比例。此外,还提供一种二聚体,适用于制备交替共聚物,其中包括至少一个DTP基团化合物共价连接到至少一个非DTP基团或不同DTP基团的第二单体基团。该组合物可以共聚形成交替共聚物,进一步加工成用于印刷有机电子器件的聚合膜。设计了一系列新型的交替DTP基团重复单元共聚物,这些共聚物可以制备出具有定制电子和/或机械性能的材料,可以通过分子
化学结构轻松操纵,并且在环境条件下具有长期稳定性,这对于有机电子学(例如,有机光伏,有机发光二极管,有机场效应晶体管)的使用是有利的。