An Asymmetric Furan/Thieno[3, 2‐b]Thiophene Diketopyrrolopyrrole Building Block for Annealing‐Free Green‐Solvent Processable Organic Thin‐Film Transistors. Issue 15 (21st June 2018)

• Record Type: Journal Article
• Authors: Ding, Shang; Ni, Zhenjie; Hu, Mengxiao; Qiu, Gege; Li, Jie; Ye, Jun; Zhang, Xiaotao; Liu, Feng; Dong, Huanli; Hu, Wenping
• Is Part Of: Macromolecular rapid communications. Volume 39:Issue 15(2018)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2018-06-21
• Subjects: annealing free -- field‐effect transistors -- green solvents -- polymer semiconductors; Macromolecules -- Periodicals; Polymers -- Periodicals; Chemistry -- Periodicals; 547.705
• DOI: 10.1002/marc.201800225
• Languages: English
• ISSNs: 1022-1336

Abstract

Abstract: 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(2 H, 5 H )‐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. Abstract : A new copolymer, 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(2 H, 5 H )‐dione‐ alt ‐thieno[3, 2‐ b ]thiophene](PTTFDPP‐TT), comprising of an asymmetric furan and thieno[3, 2‐ b ]thiophene flanked diketopyrrolopyrrole building block is designed and synthesized. As expected this copolymer exhibits good capacity for annealing‐free green‐solvent processable organic thin‐film transistors, giving thermal‐stable hole carrier mobility of 0.12 cm 2 V −1 s −1 . This result suggests PTTFDPP‐TT is a potential promising candidate for environmentally benign and less‐energy‐consuming electronic applications.