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Title: A vinyl flanked difluorobenzothiadiazole–dithiophene conjugated polymer for high performance organic field-effect transistors

Fluorine containing conjugated polymers have been widely applied in high performance organic solar cells, but their use in field-effect transistors is still quite limited. In this work, a conjugated polymer PTFBTV based on difluorobenzothiadiazole (DFBT) and dithiophene was synthesized, utilizing multiple vinylene as linkers. The polymer exhibits a relatively high hole mobility up to 2.0 cm 2 V -1 s -1 compared with the reported DFBT–oligothiophene based polymers, yet its structural complexity is much simpler. The polymer thin film exhibits a typical ‘face on’ molecular orientation. A single crystal of its monomer revealed a non-covalent intramolecular contact between fluorine and the neighbouring proton, which strengthens the backbone co-planarity. Meanwhile an intermolecular F∙∙∙F contact was also observed, which might cause rather scattered lamellar crystallinity for PTFBTV in the solid state.
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  1. Chongqing Univ., Chongqing (China). School of Chemistry and Chemical Engineering; Yunnan Minzu Univ., Kunming (China). YMU-HKBU Joint Lab. of Traditional Natural Medicine
  2. Chongqing Univ., Chongqing (China). School of Chemistry and Chemical Engineering
  3. Chinese Academy of Sciences (CAS), Beijing (China). Beijing National Lab. for Molecular Sciences, Inst. of Chemistry
  4. Yunnan Minzu Univ., Kunming (China). YMU-HKBU Joint Lab. of Traditional Natural Medicine
  5. Chinese Academy of Sciences (CAS), Chongqing (China). Chongqing Inst. of Green and Intelligent Technology
  6. Argonne National Lab. (ANL), Argonne, IL (United States). Materials Science Division; Univ. of Chicago, IL (United States). Inst. for Molecular Engineering
Publication Date:
Grant/Contract Number:
Accepted Manuscript
Journal Name:
Journal of Materials Chemistry C
Additional Journal Information:
Journal Volume: 6; Journal Issue: 7; Journal ID: ISSN 2050-7526
Royal Society of Chemistry
Research Org:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Materials Sciences & Engineering Division; National Natural Science Foundation of China (NNSFC)
Country of Publication:
United States
OSTI Identifier: