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数学的アプローチによる新奇超分子系材料創成と解析

Publicly Offered Research

Project AreaDiscrete Geometric Analysis for Materials Design
Project/Area Number 18H04470
Research Category

Grant-in-Aid for Scientific Research on Innovative Areas (Research in a proposed research area)

Allocation TypeSingle-year Grants
Research InstitutionHokkaido University

Principal Investigator

山本 拓矢  北海道大学, 工学研究院, 准教授 (30525986)

Project Period (FY) 2018-04-01 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥6,760,000 (Direct Cost: ¥5,200,000、Indirect Cost: ¥1,560,000)
Fiscal Year 2019: ¥3,380,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥780,000)
Fiscal Year 2018: ¥3,380,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥780,000)
Keywords環状高分子 / P3HT
Outline of Annual Research Achievements

本研究課題において、環状高分子とカーボンナノチューブ(CNT)との複合化・ネットワーク化による高分子トポロジーに立脚した高分散安定化現象を、領域内の共同研究を通して数学・情報学的基盤に基づき解明し、その応用として新規材料の開発を試みた。
まず、完全共役構造を有する環状Poly(3-Hexylthiophene)(P3HT)の合成に成功し、これがCNTに対し優れた分散安定性を付与することを見出した。さらに、P3HTのトポロジー(直鎖または環)に依存したCNTの分散安定化を定量的に評価するために、領域内共同研究によってTEM画像の情報学的解析を行った。つまり、P3HTのトポロジーに依存したCNTの分散安定化を、畳み込みニューラルネットワークを用いた機械学習により評価する方法を見出た。ここで、環状高分子がナノ構造体を高分散安定化する原理の解明と新奇機能材料開発のために、CNT上のP3HTネットワークおよび複合材料中のCNTネットワークの階層構造解析として、CNTとP3HT複合体のTEM画像の分析に際して、その分散性を目視で見積もり、P3HTのトポロジーを評価する手法には客観性と正確さに限界があった。そのため、畳み込みニューラルネットワークによる機械学習を用いて、中程度の精度(62~80%)ながら画像から構成成分(直鎖状P3HTまたは環状P3HT)を見極める手法を開発した。この手法の実用化と汎用化に向け、P3HTの分子量やCNTの直径を変化させて同様のTEM画像解析を行い、これらの要因がどのように解析精度に影響するのか精査した。また、CNTと環状P3HT複合構造の高分解能TEMを測定したところ、CNTを構成する炭素原子も確認できるほど分解能で、高分子1本1本が観察できた。
さらに、本研究期間の成果として1本の高分子鎖に複数の異なる官能基を導入し、その折りたたみ様式を制御することで異なる2環状トポロジー(8の字型、θ型、および手錠型)を選択的に構築した。

Research Progress Status

令和元年度が最終年度であるため、記入しない。

Strategy for Future Research Activity

令和元年度が最終年度であるため、記入しない。

Report

(2 results)
  • 2019 Annual Research Report
  • 2018 Annual Research Report
  • Research Products

    (26 results)

All 2020 2019 2018 Other

All Int'l Joint Research (1 results) Journal Article (7 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 6 results,  Open Access: 1 results) Presentation (17 results) (of which Int'l Joint Research: 11 results,  Invited: 12 results) Book (1 results)

  • [Int'l Joint Research] POSTECH(韓国)

    • Related Report
      2018 Annual Research Report
  • [Journal Article] Synthesis and Unimolecular ESA-CF Polymer Cyclization of Zwitterionic Telechelic Precursors2019

    • Author(s)
      Konomoto, T.; Nakamura, K.; Yamamoto, T.; *Tezuka, Y.
    • Journal Title

      Macromolecules

      Volume: 52 Issue: 23 Pages: 9208-9219

    • DOI

      10.1021/acs.macromol.9b01793

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] 環状高分子合成の進展と機能材料への可能性2019

    • Author(s)
      *山本拓矢
    • Journal Title

      高分子

      Volume: 68 Pages: 613-617

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Programmed Polymer Folding with Periodically Positioned Tetrafunctional Telechelic Precursors by Cyclic Ammonium Salt Units as Nodal Points2019

    • Author(s)
      Kyoda Kohei、Yamamoto Takuya、Tezuka Yasuyuki
    • Journal Title

      Journal of the American Chemical Society

      Volume: 141 Issue: 18 Pages: 7526-7536

    • DOI

      10.1021/jacs.9b02459

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Micelle Structure Details and Stabilities of Cyclic Block Copolymer Amphiphile and Its Linear Analogues2019

    • Author(s)
      Ree, B. J.; *Satoh, T.; *Yamamoto, T.
    • Journal Title

      Polymers

      Volume: 11 Issue: 1 Pages: 163-163

    • DOI

      10.3390/polym11010163

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Synthesis, Isolation, and Properties of All Head-to-Tail Cyclic Poly(3-hexylthiophene): Fully Delocalized Exciton over the Defect-Free Ring Polymer2018

    • Author(s)
      Yamamoto Takuya、Hosokawa Masaaki、Nakamura Minato、Sato Shin-ichiro、Isono Takuya、Tajima Kenji、Satoh Toshifumi、Sato Masamichi、Tezuka Yasuyuki、Saeki Akinori、Kikkawa Yoshihiro
    • Journal Title

      Macromolecules

      Volume: 51 Issue: 22 Pages: 9284-9293

    • DOI

      10.1021/acs.macromol.8b01681

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Load-Induced Frictional Transition for Well-Defined Cyclic Self-Assembled Monolayers2018

    • Author(s)
      春藤 淳臣、山本拓矢、手塚育志、田中敬二
    • Journal Title

      JOURNAL OF JAPANESE SOCIETY OF TRIBOLOGISTS

      Volume: 63 Issue: 4 Pages: 248-252

    • DOI

      10.18914/tribologist.63.04_248

    • NAID

      130006707604

    • ISSN
      0915-1168, 2189-9967
    • Related Report
      2018 Annual Research Report
  • [Journal Article] Topology Effects of Cyclic Polymers: Controlling the Topology for Innovative Functionalities2018

    • Author(s)
      *Yamamoto, T.
    • Journal Title

      React. Funct. Polym.

      Volume: 132 Pages: 43-50

    • DOI

      10.1016/j.reactfunctpolym.2018.08.021

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Presentation] 環状高分子の合成と機能発現2020

    • Author(s)
      山本拓矢
    • Organizer
      先導研講演会
    • Related Report
      2019 Annual Research Report
    • Invited
  • [Presentation] Cyclic Polymers Synthesis and Characterization2019

    • Author(s)
      Yamamoto, T.
    • Organizer
      The Second International Conference of Polymeric and Organic Materials in Yamagata University
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Cyclic Polymer Synthesis and Their Unique Characteristics2019

    • Author(s)
      Yamamoto, T.
    • Organizer
      Invited Lecture
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Synthesis of Cyclic Polymers and Their Unique Properties2019

    • Author(s)
      Yamamoto, T.
    • Organizer
      Korea-Japan Joint Polymer Symposium on Polymer Science 2019
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Advanced Synthesis of Cyclic Polymers and Their Unique Characteristics2019

    • Author(s)
      Yamamoto, T.
    • Organizer
      Polymers and Networks via Topology and Entanglement
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 環状P3HTを用いたカーボンナノチューブの分散と画像認識による高分子トポロジーの識別2019

    • Author(s)
      山本拓矢
    • Organizer
      次世代物質探索のための離散幾何学 研究成果発表会
    • Related Report
      2019 Annual Research Report
    • Invited
  • [Presentation] Synthesis and Unique Properties of Cyclic Polymers2019

    • Author(s)
      Yamamoto, T.
    • Organizer
      2nd Asian-French Workshop on Polymer Science
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Synthesis and Properties of Defect-Free Cyclic P3HT2019

    • Author(s)
      Yamamoto, T.
    • Organizer
      National Central University-Hokkaido University Joint Symposium
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Novel Synthesis and Unique Characteristics of Cyclic Polymers2019

    • Author(s)
      Yamamoto, T.
    • Organizer
      Polymers Meet Topology
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 全共役頭尾結合型環状ポリ(3-ヘキシルチオフェン)の合成2018

    • Author(s)
      中村 水都、細川 真明、山本 拓矢
    • Organizer
      第67回高分子学会年次大会
    • Related Report
      2018 Annual Research Report
  • [Presentation] Synthesis of fully conjugated cyclic poly(3-hexylthiophene)2018

    • Author(s)
      Minato Nakamura, Masaaki Hosokawa, Takuya Yamamoto
    • Organizer
      Japan-Korea Joint Symposium on Polymer Science 2018
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 全共役構造を有するAll Head-to-Tail型環状ポリ(3-ヘキシルチオフェン)の合成と光電特性評価2018

    • Author(s)
      中村 水都、細川 真明、山本 拓矢、佐伯 昭紀、吉川 佳広
    • Organizer
      2018年光化学討論会
    • Related Report
      2018 Annual Research Report
  • [Presentation] 全共役構造を有するAll Head-to-Tail 型環状ポリ(3-ヘキシルチオフェン)の合成と物性評価2018

    • Author(s)
      中村 水都、細川 真明、山本 拓矢、佐伯 昭紀、吉川 佳広
    • Organizer
      第67回高分子討論会
    • Related Report
      2018 Annual Research Report
  • [Presentation] Synthesis and property of defect-free cyclic poly(3-hexylthiophene)2018

    • Author(s)
      Minato Nakamura, Takuya Yamamoto
    • Organizer
      NCU-HU Joint Symposium
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 環状高分子を利用した界面制御2018

    • Author(s)
      山本拓矢
    • Organizer
      第6回「未来のコロイドおよび界面化学を創る若手討論会」
    • Related Report
      2018 Annual Research Report
    • Invited
  • [Presentation] Synthesis and Self-Assembly of Cyclic Polymers and Structural Analysis of the Molecular Aggregates2018

    • Author(s)
      Yamamoto, T.
    • Organizer
      7th Synchrotron Radiation in Polymer Science
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Functional Materials Formed from Cyclic Polymers2018

    • Author(s)
      Yamamoto, T.
    • Organizer
      Japan-Korea Joint Polymer Symposium on Polymer Science 2018
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research / Invited
  • [Book] 環状高分子の合成と機能発現2018

    • Author(s)
      *山本拓矢
    • Total Pages
      337
    • Publisher
      シーエムシー出版
    • ISBN
      9784781313993
    • Related Report
      2018 Annual Research Report

URL: 

Published: 2018-04-23   Modified: 2021-01-27  

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