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

Liang, Xianfeng; Sun, Wandong; Chen, Yanlin; Tan, Luxi; Cai, Zhengxu; Liu, Zitong; Wang, Lin; Li, Jing; Chen, Wei; Dong, Lichun

doi:10.1039/c7tc05360f

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

Journal Article · Wed Jan 17 00:00:00 EST 2018 · Journal of Materials Chemistry C

DOI:https://doi.org/10.1039/c7tc05360f· OSTI ID:1432056

Liang, Xianfeng ^[1]; Sun, Wandong ^[2]; Chen, Yanlin ^[2];

^[2]; Cai, Zhengxu ^[3];

^[3]; Wang, Lin ^[4]; Li, Jing ^[5];

^[6]; Dong, Lichun ^[2]

Chongqing Univ., Chongqing (China). School of Chemistry and Chemical Engineering; Yunnan Minzu Univ., Kunming (China). YMU-HKBU Joint Lab. of Traditional Natural Medicine
Chongqing Univ., Chongqing (China). School of Chemistry and Chemical Engineering
Chinese Academy of Sciences (CAS), Beijing (China). Beijing National Lab. for Molecular Sciences, Inst. of Chemistry
Yunnan Minzu Univ., Kunming (China). YMU-HKBU Joint Lab. of Traditional Natural Medicine
Chinese Academy of Sciences (CAS), Chongqing (China). Chongqing Inst. of Green and Intelligent Technology
Argonne National Lab. (ANL), Argonne, IL (United States). Materials Science Division; Univ. of Chicago, IL (United States). Inst. for Molecular Engineering

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 cm² 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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Research Organization:: Argonne National Lab. (ANL), Argonne, IL (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Materials Sciences & Engineering Division; National Natural Science Foundation of China (NSFC)

Grant/Contract Number:: AC02-06CH11357

OSTI ID:: 1432056

Journal Information:: Journal of Materials Chemistry C, Vol. 6, Issue 7; ISSN 2050-7526

Publisher:: Royal Society of ChemistryCopyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 10 works

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