"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 journalArticlepeer-review

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
  • Polymers and Plastics
  • Materials Chemistry

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