Solubility-Controlled Structural Ordering of Narrow Bandgap Conjugated Polymers

Authors

  • Yeong Don Park,

    1. Departments of Chemistry & Biochemistry, Department of Materials, Center for Polymers and Organic Solids, University of California, Santa Barbara, CA 93106, USA
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  • Jin Kuen Park,

    1. Departments of Chemistry & Biochemistry, Department of Materials, Center for Polymers and Organic Solids, University of California, Santa Barbara, CA 93106, USA
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  • Jung Hwa Seo,

    1. Departments of Chemistry & Biochemistry, Department of Materials, Center for Polymers and Organic Solids, University of California, Santa Barbara, CA 93106, USA
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  • Jonathan D. Yuen,

    1. Departments of Chemistry & Biochemistry, Department of Materials, Center for Polymers and Organic Solids, University of California, Santa Barbara, CA 93106, USA
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  • Wi Hyoung Lee,

    1. Department of Chemical Engineering, Polymer Research Institute, Pohang University of Science and Technology, Pohang 790–784, Korea
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  • Kilwon Cho,

    1. Department of Chemical Engineering, Polymer Research Institute, Pohang University of Science and Technology, Pohang 790–784, Korea
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  • Guillermo C. Bazan

    Corresponding author
    1. Departments of Chemistry & Biochemistry, Department of Materials, Center for Polymers and Organic Solids, University of California, Santa Barbara, CA 93106, USA
    • Departments of Chemistry & Biochemistry, Department of Materials, Center for Polymers and Organic Solids, University of California, Santa Barbara, CA 93106, USA.
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Abstract

original image

A mature approach: Allowing solutions of poly[(4,4-didodecyldithieno[3,2-b:2’,3’-d]silole)-2,6-diyl-alt-(2,1,3-benzothiadiazole)-4,7-diyl] (P1) to stand in a solvent of marginal quality leads to interchain aggregation. These supramolecular structures lead to thin films with higher charge carrier mobilities and internal order, as determined by the fabrication of thin film transistors and grazing-incidence wide angle X-ray scattering (GIWAXS) measurements, respectively. Aging of solutions is therefore a very straightforward method to modify the optoelectronic properties of solution-processable organic semiconductors.

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