A new asymmetric furan and thieno[3,2‐b]thiophene flanked diketopyrrolopyrrole (TTFDPP) building block for conjugated polymers is designed and used to generate a donor–acceptor semiconducting polymer, poly[3‐(furan‐2‐yl)‐2,5‐bis(2‐octyldodecyl)‐6‐(thieno[3,2‐b]thiophen‐2‐yl)pyrrolo[3,4‐c]pyrrole‐1,4(2H,5H)‐dione‐alt‐thieno[3,2‐b]thiophene] (abbreviated to PTTFDPP‐TT), consisting of TTFDPP unit copolymerized with thieno[3,2‐b]thiophene comonomer (TT), which is further synthesized. Results demonstrate that PTTFDPP‐TT‐based thin‐film transistors in a bottom‐gate bottom‐contact device configuration exhibit typical hole‐transporting property, with weak temperature dependence for charge carrier mobility from room temperature to 200 °C. In addition, the good solubility of PTTFDPP‐TT due to the incorporation of a polar furan unit and an asymmetric conjugated structure makes it able to be solution processed with a less toxic nonchlorinated solvent such as toluene, demonstrating comparable performance with that prepared from chlorinated solution. These results suggest PTTFDPP‐TT as a promising organic semiconductor candidate for annealing‐free, environmentally benign, and less energy‐consuming applications in large‐area flexible organic electronic devices.

中文翻译：

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不对称的呋喃/硫杂[3,2-b]噻吩二酮吡咯并吡咯构建基，用于无退火的绿色溶剂可加工有机薄膜晶体管

设计了一种用于共轭聚合物的新型不对称呋喃和噻吩并[3,2- b ]噻吩侧基二酮吡咯并吡咯（TTFDPP）构件，并用于生成供体-受体半导体聚合物聚[3-（呋喃-2-基）-2- 1,5-双（2-辛基十二烷基）-6-（噻吩并[3,2- b ]噻吩-2-基）吡咯并[3,4 ç ]吡咯-1,4（2 ħ，5 ħ）-dione- ALT -噻吩并[3,2- b ]噻吩]（缩写为PTTFDPP-TT） ，由TTFDPP与噻吩并[3,2-共聚单元b ]噻吩的共聚单体（TT），其进一步合成。结果表明PTTFDPP‐TT‐底部栅极底部接触器件配置中的基于薄膜的薄膜晶体管表现出典型的空穴传输特性，对于温度从室温到200°C的载流子迁移率具有很弱的温度依赖性。此外，由于掺入了极性呋喃单元和不对称的共轭结构，PTTFDFP-TT具有良好的溶解性，使其能够使用毒性较低的非氯化溶剂（例如甲苯）进行溶液加工，证明其性能与氯化溶液相当。 。这些结果表明PTTFDPP‐TT是有希望的有机半导体候选产品，可用于大面积柔性有机电子设备中的无退火，无害环境且耗能少的应用。