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Self-Assembly and Charge-Transport Properties of a Polythiophene–Fullerene Triblock Copolymer

Authors

  • Mark Dante,

    1. Center for Polymers and Organic Solids Department of Chemistry and Biochemistry University of California, Santa Barbara Santa Barbara, CA 93106-9510 (USA)
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  • Changduk Yang,

    1. Center for Polymers and Organic Solids Department of Chemistry and Biochemistry University of California, Santa Barbara Santa Barbara, CA 93106-9510 (USA)
    2. Current Address: School of Energy Engineering, Ulsan National Institute of Science and Technology, Ulsan, 689-805 (South Korea)
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  • Bright Walker,

    1. Center for Polymers and Organic Solids Department of Chemistry and Biochemistry University of California, Santa Barbara Santa Barbara, CA 93106-9510 (USA)
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  • Fred Wudl,

    1. Center for Polymers and Organic Solids Department of Chemistry and Biochemistry University of California, Santa Barbara Santa Barbara, CA 93106-9510 (USA)
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  • Thuc-Quyen Nguyen

    Corresponding author
    1. Center for Polymers and Organic Solids Department of Chemistry and Biochemistry University of California, Santa Barbara Santa Barbara, CA 93106-9510 (USA)
    • Center for Polymers and Organic Solids Department of Chemistry and Biochemistry University of California, Santa Barbara Santa Barbara, CA 93106-9510 (USA).
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Abstract

A rod–coil triblock copolymer consisting of a poly(3-hexylthiophene) (P3HT) rigid block, a styrene coil block, and a coil block with fullerene pendant group has been synthesized (see figure). Nanofibers in films reach 250 nm in length and 10.7 nm in width. Photo- and dark-current imaging by conducting atomic force microscopy reveals that the fibers are highly conductive. The electron and hole mobilities are comparable with a P3HT:fullerene-derivative blend.

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