申请人:Brown Christopher T.
公开号:US20110028644A1
公开(公告)日:2011-02-03
A composition comprising a homopolymer or a copolymer comprising bithiophene 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 polymerization 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 bithiophene moiety compound covalently linked to one second monomer moiety comprising a different bithiophene moiety or at least one moiety that is not a bithiophene. 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 copolymers are 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). Improved methods are disclosed for making monomers comprising a benzo[2,1-b:3,4-b′]dithiophene moiety that are useful as electronics materials.
该组成物包括一种由噻吩单元组成的同聚物或共聚物,例如,用于低带隙材料,包括在有机光伏活性层中使用。可以通过聚合方法,包括选择单体结构和单体组分的比例来设计带隙和其他性质。此外,还提供了一种二聚体,适用于制备交替共聚物,该二聚体进一步包括一个第一单体基团,包括至少一个噻吩基团化合物与一个第二单体基团共价连接,第二单体基团包括不同的噻吩基团或至少一个不是噻吩的基团。该组成物可以共聚合形成交替共聚物,进一步加工成用于印刷有机电子器件的聚合膜。设计了一系列新型共聚物,可允许制备具有定制电子和/或机械性能的材料,这些性能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,OPV、OLED、OFET)的使用非常有优势。还公开了用于制备含苯并[2,1-b:3,4-b′]噻吩基团的单体的改进方法,这些单体在电子材料中很有用。