"Click" Incorporation of Radical/Ionic Sites into a Reactive Block Copolymer: A Facile and On-Demand Domain Functionalization Approach toward Organic Resistive Memory

Takeo Suga, Kohei Aoki, Toshiaki Yashiro, Hiroyuki Nishide

    Research output: Contribution to journalArticle

    5 Citations (Scopus)

    Abstract

    Reversible addition-fragmentation chain transfer polymerization yields reactive block copolymers bearing the pentafluorophenyl ester (PFPA) group, and subsequent Click amidation using 2,2,6,6-tetramethylpiperidine-N-oxyl- and imidazolium-functionalized primary amines produces the corresponding functional block copolymers, leading to installation of statistical radical- and ionic sites into the PFPA segment. The monolayered thin film devices fabricated using the obtained block copolymers exhibit repeatable switching of electric conductivity (on/off ratio > 103) under a bias voltage, which reveals that the coexistence of radicals and ions in the same spherical domain of the copolymer layer is a prerequisite for repeatable switching memory.

    Original languageEnglish
    Pages (from-to)53-59
    Number of pages7
    JournalMacromolecular Rapid Communications
    Volume37
    Issue number1
    DOIs
    Publication statusPublished - 2016 Jan 1

    Keywords

    • charge-transport
    • ionic polymer
    • nitroxide radical
    • organic electronics
    • postpolymerization modification

    ASJC Scopus subject areas

    • Organic Chemistry
    • Materials Chemistry
    • Polymers and Plastics

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