Systematic Investigation of a Novel Low-Bandgap Terpolymer Library via Inkjet Printing: Influence of Ink Properties and Processing Conditions

Authors

  • Anke Teichler,

    1. Laboratory of Organic and Macromolecular Chemistry, Friedrich-Schiller-University Jena, Humboldtstraße 10, 07743 Jena, Germany
    2. Jena Center for Soft Matter (JCSM), Friedrich-Schiller-University Jena, Philosophenweg 7, 07743 Jena, Germany
    3. Dutch Polymer Institute, P.O. Box 513, 5600 MB Eindhoven, The Netherlands
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  • Jolke Perelaer,

    1. Laboratory of Organic and Macromolecular Chemistry, Friedrich-Schiller-University Jena, Humboldtstraße 10, 07743 Jena, Germany
    2. Jena Center for Soft Matter (JCSM), Friedrich-Schiller-University Jena, Philosophenweg 7, 07743 Jena, Germany
    3. Dutch Polymer Institute, P.O. Box 513, 5600 MB Eindhoven, The Netherlands
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  • Florian Kretschmer,

    1. Laboratory of Organic and Macromolecular Chemistry, Friedrich-Schiller-University Jena, Humboldtstraße 10, 07743 Jena, Germany
    2. Jena Center for Soft Matter (JCSM), Friedrich-Schiller-University Jena, Philosophenweg 7, 07743 Jena, Germany
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  • Martin D. Hager,

    1. Laboratory of Organic and Macromolecular Chemistry, Friedrich-Schiller-University Jena, Humboldtstraße 10, 07743 Jena, Germany
    2. Jena Center for Soft Matter (JCSM), Friedrich-Schiller-University Jena, Philosophenweg 7, 07743 Jena, Germany
    3. Dutch Polymer Institute, P.O. Box 513, 5600 MB Eindhoven, The Netherlands
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  • Ulrich S. Schubert

    Corresponding author
    1. Laboratory of Organic and Macromolecular Chemistry, Friedrich-Schiller-University Jena, Humboldtstraße 10, 07743 Jena, Germany
    2. Jena Center for Soft Matter (JCSM), Friedrich-Schiller-University Jena, Philosophenweg 7, 07743 Jena, Germany
    3. Dutch Polymer Institute, P.O. Box 513, 5600 MB Eindhoven, The Netherlands
    • Laboratory of Organic and Macromolecular Chemistry, Friedrich-Schiller-University Jena, Humboldtstraße 10, 07743 Jena, Germany.
    Search for more papers by this author

Abstract

The thin-film properties of a polymer library consisting of novel conjugated low-bandgap poly(diketopyrrolopyrrole-co-benzothiadiazole-co-fluorene) (poly(DPP-co-BTD-co-F)) polymers are investigated. The content of the monomer units in the copolymers is systematically varied. Structure–property relationships are obtained for the ink characteristics, the film formation qualities, and their optical properties. Toluene/o-DCB in a ratio 90/10 and a concentration of 5 mg mL−1 is found to be a suitable solvent system for all polymers. The polymer compositions and the choice of solvent have a significant influence on the film properties. Inkjet printing is shown to be a suitable technique for the preparation of thin-film libraries that subsequently can be characterized by combinatorial screening tools.

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