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Issue 38, 2012
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Synthesis and properties of small band gap thienoisoindigo based conjugated polymers

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Abstract

Using Stille and Suzuki polymerization reactions we incorporate thienoisoindigo (TII) as an acceptor co-monomer into a series of alternating π-conjugated copolymers with combinations of benzene, thiophene and carbazole as donor co-monomers. By changing the nature and length of the donor segments, the optical band gap of these soluble TII copolymers can be varied over a large range from 1.52 eV down to 0.87 eV. The semiconducting properties of the TII copolymers were established in bottom-gate bottom-contact field-effect transistors that provide hole mobilities for these materials in the range of 10−3 to 10−2 cm2 V−1 s−1.

Graphical abstract: Synthesis and properties of small band gap thienoisoindigo based conjugated polymers

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Publication details

The article was received on 16 Jul 2012, accepted on 13 Aug 2012 and first published on 14 Aug 2012


Article type: Paper
DOI: 10.1039/C2JM34668K
J. Mater. Chem., 2012,22, 20387-20393

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    Synthesis and properties of small band gap thienoisoindigo based conjugated polymers

    G. W. P. Van Pruissen, F. Gholamrezaie, M. M. Wienk and R. A. J. Janssen, J. Mater. Chem., 2012, 22, 20387
    DOI: 10.1039/C2JM34668K

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