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2019 年度 実績報告書

特殊構造ブロックコポリマーの合成および自己組織化挙動

研究課題

研究課題/領域番号 17J01195
研究機関北海道大学

研究代表者

Ree Brian J.  北海道大学, 大学院総合化学院, 特別研究員(DC1)

研究期間 (年度) 2017-04-26 – 2020-03-31
キーワードfunctional brush polymer / brush block copolymer / ferroelectric memory / oxygen-based memory
研究実績の概要

The third year continued the development of novel ferroelectric digital memory system and novel polymers with oxygen-based conjugated moieties.
The synthesis and characterization of novel polymers with oxygen-based conjugated moieties have been confirmed successful previously and the resistive memory behavior was measured in various thin film thicknesses. In order to comprehend the correlation between the position and number of oxygen atoms in the electroactive side chains to the resistive memory behavior, a careful analysis of the voltage-current (I-V) measurements was done. Through the analysis, a four stage conduction mechanism seemed to be present in all of the polymers and I have developed a new theory on the conduction mechanism for the novel polymers. Currently, the research contents of the oxygen containing polymers are summarized and in process of submission to international academic journals.
The development of novel ferroelectric digital memory polymer has been steadily making progress. The results are showing that the magnitude of the ferroelectricity is dependent on the length of the perfluorinated brushes of the polymers and some additional polymers with larger variety of perfluorinated brush lengthes have been synthesized for the purpose of investigating the correlation of the chemical structure to the spontaneous polarization behavior. Additional measurements and characterization have been acquired to prepare several manuscripts for this system. Currently, the manuscript for this system is being prepared for publication.

現在までの達成度 (段落)

令和元年度が最終年度であるため、記入しない。

今後の研究の推進方策

令和元年度が最終年度であるため、記入しない。

  • 研究成果

    (4件)

すべて 2019

すべて 雑誌論文 (2件) (うち国際共著 2件、 査読あり 2件) 学会発表 (2件)

  • [雑誌論文] Phase Transition Behaviors and Nanoscale Film Morphologies of Poly(δ‐valerolactone) Axles Bearing Movable and Fixed Rotaxane Wheels2019

    • 著者名/発表者名
      Brian J. Ree, Daisuke Aoki, Jehan Kim, Toshifumi Satoh, Toshikazu Takata, Moonhor Ree
    • 雑誌名

      Macromolecular Rapid Communications

      巻: 40 ページ: 1900334

    • DOI

      https://doi.org/10.1002/marc.201900334

    • 査読あり / 国際共著
  • [雑誌論文] Macromolecular [2]Rotaxanes Linked with Polystyrene: Properties and Nanoscale Film Morphologies2019

    • 著者名/発表者名
      Brian J. Ree, Daisuke Aoki, Jehan Kim, Toshifumi Satoh, Toshikazu Takata, Moonhor Ree
    • 雑誌名

      Macromolecules

      巻: 52 ページ: 5325-5336

    • DOI

      https://doi.org/10.1021/acs.macromol.9b00450

    • 査読あり / 国際共著
  • [学会発表] Oxygen-assisted Conjugation Enabled Semi-conducting Polymers: A Facile Synthesis and Quantitative Characterization2019

    • 著者名/発表者名
      Brian J. Ree, Takuya Isono, and Toshifumi Satoh
    • 学会等名
      第68回高分子学会年次大会
  • [学会発表] Investigation of Topological Effect upon Thin Film Morphology of Various Block Copolymers2019

    • 著者名/発表者名
      Brian J. Ree, Takuya Isono, and Toshifumi Satoh
    • 学会等名
      2nd Asian-French Workshop on Polymer Science : AFWPS 2019

URL: 

公開日: 2021-01-27  

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