Design of side chains yielding highly amphiphilic conjugated polymers is proven to be an effective and general method to access lyotropic liquid crystalline mesophases, allowing greater control over crystalline morphology and improving transistor performance. The general strategy enables variations in structure and interactions that impact alignment and use of liquid crystalline alignment methods. Specifically, solvent-polymer interactions are harnessed to facilitate the formation of high quality polymer crystals in solution. Crystallinity developed in solution is then transferred to the solid state, and thin films of donor-acceptor copolymers cast from lyotropic solutions exhibit improved crystalline order in both the alkyl and π-stacking directions. Due to this improved crystallinity, transistors with active layers cast from lyotropic solutions exhibit a significant improvement in carrier mobility compared to those cast from isotropic solution. One or more embodiments of the present invention achieve a maximum carrier mobility of 0.61 cm2V−1s−1.
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机译：事实证明，生成高度两亲性共轭聚合物的侧链设计是访问溶致液晶中间相的有效且通用的方法，可以更好地控制晶体形态并改善晶体管性能。通用策略使得结构和相互作用的变化能够影响液晶取向方法的取向和使用。具体而言，利用溶剂-聚合物相互作用来促进溶液中高质量聚合物晶体的形成。然后在溶液中形成的结晶度转移到固态，并且由溶致溶液浇铸的供体-受体共聚物的薄膜在烷基和π堆积方向均显示出改善的结晶顺序。由于这种改善的结晶度，与从各向同性溶液浇铸的晶体管相比，具有由溶致溶液浇铸的有源层的晶体管在载流子迁移率方面具有显着改善。本发明的一个或多个实施例实现了0.61cm 2 V -1 s -1 的最大载流子迁移率。
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