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Issue 7, 2018
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A vinyl flanked difluorobenzothiadiazole–dithiophene conjugated polymer for high performance organic field-effect transistors

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Abstract

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.

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

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Publication details

The article was received on 22 Nov 2017, accepted on 17 Jan 2018 and first published on 17 Jan 2018


Article type: Paper
DOI: 10.1039/C7TC05360F
J. Mater. Chem. C, 2018,6, 1774-1779

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

    X. Liang, W. Sun, Y. Chen, L. Tan, Z. Cai, Z. Liu, L. Wang, J. Li, W. Chen and L. Dong, J. Mater. Chem. C, 2018, 6, 1774
    DOI: 10.1039/C7TC05360F

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