Cyclopentadithiophene based polymers - A comparison of optical, electrochemical and organic field-effect transistor characteristics

Masaki Horie, Leszek A. Majewski, Michael J. Fearn, Chin Yang Yu, Yi Luo, Aimin Song, Brian R. Saunders, Michael L. Turner

    Research output: Contribution to journalArticlepeer-review

    Abstract

    A series of cyclopentadithiophene based polymers have been synthesized by oxidative polymerisation or palladium-catalyzed coupling reactions. Polymers have been prepared with backbones containing benzothiadiazole, benzoxadiazole, 2,2′-bithiophene, phenyl and fluorene units. The backbone structure is shown to have a large effect on the film morphology, and the optical and electrochemical properties in solution and the solid state. We show that the polymer composition can be used to tune the band gap over the entire visible spectrum. Spin-coated films of these polymers have been used as the active layer of organic field effect transistors and hole mobilities up to 3.7 × 10-3 cm2 V-1 s-1 have been measured under ambient conditions. © The Royal Society of Chemistry 2010.
    Original languageEnglish
    Pages (from-to)4347-4355
    Number of pages8
    JournalJournal of Materials Chemistry
    Volume20
    Issue number21
    DOIs
    Publication statusPublished - 2010

    Keywords

    • Polymers Role: PRP (Properties), SPN (Synthetic preparation), PREP (Preparation) (conjugated
    • cyclopentadithiophene based polymers for comparison of optical, electrochem. and org. field-effect transistor characteristics)
    • Band gap
    • Field effect transistors
    • Hole mobility
    • Polymer morphology
    • UV and visible spectra (cyclopentadithiophene based polymers for comparison of optical, electrochem. and org. field-effect transistor characteristics)
    • Polythiophenes Role: PRP (Properties), SPN (Synthetic preparation), PREP (Preparation) (cyclopentadithiophene based polymers for comparison of optical, electrochem. and org. field-effect transistor characteristics)
    • Polymerization (oxidative
    • polythiophene cyclopentadithiophene field transistor oxidative polymn

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