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Development of phase-change materials based on organic-inorganic hybrid molecular solid solutions exhibiting orientationally disordered phase Transition

Research Project

Project/Area Number 18K19114
Research Category

Grant-in-Aid for Challenging Research (Exploratory)

Allocation TypeMulti-year Fund
Review Section Medium-sized Section 35:Polymers, organic materials, and related fields
Research InstitutionKyoto Institute of Technology

Principal Investigator

Naka Kensuke  京都工芸繊維大学, 分子化学系, 教授 (70227718)

Project Period (FY) 2018-06-29 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥6,240,000 (Direct Cost: ¥4,800,000、Indirect Cost: ¥1,440,000)
Fiscal Year 2019: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Fiscal Year 2018: ¥3,380,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥780,000)
Keywordsかご型シルセスキオキサン / 柔粘性結晶 / 潜熱蓄熱材 / 固溶体 / ネットワークポリマー / EL素子 / 熱伝導性 / 熱伝導
Outline of Final Research Achievements

This study has conducted to develop innovated concept of latent heat storage materials based on a new scientific technology of cage silsesquioxane (POSS) derivatives that form solid solutions exhibiting a crystalline-orientationally disordered phase transition, in order to solve the problems of conventional latent heat storage materials, such as high cost and low thermal conductivity. In this project, various types monosubstituted isobutyl group-containing POSS derivatives, which show an orientationally disordered phase transition, and incompletely condensed cage silsesquioxane derivatives as basic frameworks have been synthesized and studied relationship between their structures and thermal properties and other functions.

Academic Significance and Societal Importance of the Research Achievements

結晶と液体の両方の性質を示す物質である液晶は配向性のある異方性液体である。それに対して柔粘性結晶は結晶と液体の両方の性質を示す物質であるが、液晶とは異なり配向性のない等方的結晶でありフラーレンなどの球状分子で報告されている。近年、機能性付与に向けた研究が一部見られつつあるが、液晶と比較するとその基礎的理解は不十分である。POSS誘導体が結晶―柔粘性結晶性転移を示し、分子性固溶体を形成するという発見は柔粘性結晶に関する学術的発展のみならず高分子材料における相分離挙動に関連する高分子物理科学分野に対しても大きな波及効果をもたらすものである。

Report

(3 results)
  • 2019 Annual Research Report   Final Research Report ( PDF )
  • 2018 Research-status Report
  • Research Products

    (10 results)

All 2020 2019 2018

All Journal Article (6 results) (of which Peer Reviewed: 6 results) Presentation (4 results) (of which Invited: 1 results)

  • [Journal Article] Corner- and Side-Opened Cage Silsesquioxanes: Structural Effects on the Materials Properties2020

    • Author(s)
      Imoto Hiroaki、Ueda Yukiho、Sato Yuri、Nakamura Masashi、Mitamura Koji、Watase Seiji、Naka Kensuke
    • Journal Title

      European Journal of Inorganic Chemistry

      Volume: 2020 Issue: 9 Pages: 737-742

    • DOI

      10.1002/ejic.201901182

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Transition-Metal-Catalyzed Direct Arylation of Caged Silsesquioxanes: Substrate Scope and Mechanistic Study2019

    • Author(s)
      Imoto Hiroaki、Wada Satoshi、Yumura Takashi、Naka Kensuke
    • Journal Title

      European Journal of Inorganic Chemistry

      Volume: 印刷中 Issue: 16 Pages: 2202-2207

    • DOI

      10.1002/ejic.201900126

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] “Soluble network polymers based on trifunctional open-cage silsesquioxanes2019

    • Author(s)
      H. Imoto, A. Ishida, M. Hashimoto, Y. Mizoue, S. Yusa, K. Naka
    • Journal Title

      Chemistry Letters

      Volume: 48 Issue: 10 Pages: 1266-1269

    • DOI

      10.1246/cl.190536

    • NAID

      130007724093

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Palladium-Catalyzed Arylation of Open-Cage Silsesquioxanes toward Thermally Stable and Highly Dispersible Nanofillers2019

    • Author(s)
      Satoshi Wada, Hiroaki Imoto, Kensuke Naka
    • Journal Title

      Bull. Chem. Soc. Jpn.

      Volume: 92 Issue: 5 Pages: 989-994

    • DOI

      10.1246/bcsj.20190027

    • NAID

      130007649765

    • Related Report
      2018 Research-status Report
    • Peer Reviewed
  • [Journal Article] One-pot strategy for synthesis of open-cage silsesquioxane monomers2019

    • Author(s)
      Ryoichi Katoh, Hiroaki Imoto, Kensuke Naka
    • Journal Title

      Polym. Chem.

      Volume: 10 Issue: 18 Pages: 2223-2229

    • DOI

      10.1039/c9py00036d

    • Related Report
      2018 Research-status Report
    • Peer Reviewed
  • [Journal Article] Effect of Mono-Substituents in Heptaisobutyl-Substituted Polyhedral Octasilsesquioxanes on Orientationally Disordered Phase Transition2018

    • Author(s)
      Morimoto Satoshi、Imoto Hiroaki、Kanaori Kenji、Naka Kensuke
    • Journal Title

      Bulletin of the Chemical Society of Japan

      Volume: 91 Issue: 9 Pages: 1390-1396

    • DOI

      10.1246/bcsj.20180156

    • NAID

      130007484203

    • Related Report
      2018 Research-status Report
    • Peer Reviewed
  • [Presentation] かご型シルセスキオキサン主鎖型ポリマーの置換基およびコモノマーによる物性への影響2019

    • Author(s)
      石田 彩乃・藤井 駿一・井本 裕顕・中 建介
    • Organizer
      無機高分子研究討論会
    • Related Report
      2019 Annual Research Report
  • [Presentation] カルバゾール含有不完全かご型シルセスキオキサン誘導体の合成と特性評価2019

    • Author(s)
      上田幸歩・佐藤友理・中村優志・渡瀬星児・井本裕顕・中建介
    • Organizer
      高分子研究発表会(神戸)
    • Related Report
      2019 Annual Research Report
  • [Presentation] かご型シルセスキオキサンの柔粘性結晶転移に及ぼす置換基効果2018

    • Author(s)
      中 建介
    • Organizer
      「材料シンポジウム」ワークショップ
    • Related Report
      2018 Research-status Report
  • [Presentation] Functional Materials Based on Completely and Incompletely Condensed Cage-Silsesquioxanes2018

    • Author(s)
      中 建介
    • Organizer
      0th US-Japan Hybrid Materials Workshop
    • Related Report
      2018 Research-status Report
    • Invited

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Published: 2018-07-25   Modified: 2021-02-19  

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