Beijing National Laboratory for Molecular Sciences, Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China.
Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Department of Chemistry, School of Science, Tianjin University, and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin, 300072, P. R. China.
Adv Mater. 2019 Mar;31(10):e1806010. doi: 10.1002/adma.201806010. Epub 2019 Jan 17.
High mobility ambipolar conjugated polymers are seriously absent regardless their great potential for flexible and printed plastic devices and circuits. Here, ambipolar polymers with ultrahigh balanced hole and electron mobility are developed via a two-step CH activation strategy. Diketopyrrolopyrrole-benzothiadiazole-diketopyrrolopyrrole (DBD) and its copolymers with thiophene/selenophene units (short as PDBD-T and PDBD-Se) are used as examples. PDBD-Se exhibits highly efficient ambipolar transport with hole and electron mobility up to 8.90 and 7.71 cm V s in flexible organic field-effect transistors, presenting a milestone for ambipolar copolymer screening. Based on this performance metrics and good solubility, PDBD-Se is investigated as inkjet-printable semiconductor ink for organic complementary logic circuits. Under ambient processing, maximum hole and electron mobilities reach 6.70 and 4.30 cm V s , respectively. Printed complementary inverter and NAND gates with transition voltages near V /2 are fabricated, providing an easy-handling, general material for printed electronics and logic.
尽管高迁移率双极性共轭聚合物在柔性和印刷塑料器件和电路方面具有巨大潜力，但它们仍然严重缺失。在这里，通过两步 CH 活化策略开发了具有超高平衡空穴和电子迁移率的双极聚合物。二酮吡咯并吡咯-苯并噻二唑-二酮吡咯并吡咯（DBD）及其与噻吩/硒吩单元的共聚物（简称 PDBD-T 和 PDBD-Se）就是这样的例子。PDBD-Se 表现出高效的双极输运，在柔性有机场效应晶体管中，空穴和电子迁移率高达 8.90 和 7.71 cm V s ，这是双极共聚物筛选的一个里程碑。基于这一性能指标和良好的溶解性，PDBD-Se 被用作喷墨打印的半导体油墨，用于有机互补逻辑电路。在环境处理下，空穴和电子迁移率分别达到 6.70 和 4.30 cm V s 。制造出具有接近 V /2 的转换电压的印刷互补反相器和 NAND 门，为印刷电子和逻辑提供了一种易于处理的通用材料。
