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Controlling higher-order structure and improving functions of ultrathin metal nanowires

Research Project

Project/Area Number 19K22116
Research Category

Grant-in-Aid for Challenging Research (Exploratory)

Allocation TypeMulti-year Fund
Review Section Medium-sized Section 28:Nano/micro science and related fields
Research InstitutionTokyo University of Science

Principal Investigator

Kawai Takeshi  東京理科大学, 工学部工業化学科, 教授 (10224718)

Project Period (FY) 2019-06-28 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥6,500,000 (Direct Cost: ¥5,000,000、Indirect Cost: ¥1,500,000)
Fiscal Year 2020: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
Fiscal Year 2019: ¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Keywordsナノワイヤー / キラリティー / ソフトテンプレート / キラリティ
Outline of Research at the Start

金属ナノワイヤーは1次元ナノ材料として高い関心を集めているが、次のチャレンジングな課題はそれらの二次構造制御技術の開拓である。本研究では、二重らせん状極細金ナノワイヤーの合成法の確立とその特異な光学特性の発現に挑戦する。特に、種々のキラルナノワイヤーの合成とキラル光学特性の評価、ナノワイヤーへの有機色素被覆によるキラル転写法の確立、さらにナノワイヤーの二次構造の自在制御法の開発などの未開拓課題に重点を置く。これら未開拓課題の解決を通して1次元ナノ材料の新規な機能発現を目指す。

Outline of Final Research Achievements

We developed a facile synthesis method of ultrathin nanowires and investigated the control of their secondary structure as challenging issues for noble metal nanowires. We established the synthesis method of right-handed double-helical gold nanowires (AuNWs) with a thickness of 3 nm using a helical molecular assembled template consisting of a long-chain amine derivative (C18AA) and a D-12-hydroxyl stearate (D-HSA). We also demonstrated that the structure of molecular assemblies and AuNWs (1) is independent of the chain length of C18AA, (2) is controllable by introducing amide groups or double bonds to the long chains, and (3) is changed significantly by tuning the mixing ratio of D-HSA and L-HSA. Furthermore, we also discovered a template-free synthesis method of ultrathin AuNWs in C18AA aqueous solution.

Academic Significance and Societal Importance of the Research Achievements

らせん状ナノワイヤーの作製はトップダウン法が主流であるが、直径3 nm以下のらせん構造を作製するのは現状では不可能である。またボトムアップ法ではらせん状にナノ粒子が配列したものはあるが、テンプレートを除くとばらばらになる欠点がある。本研究で開発したらせん状金ナノワイヤーはテンプレートを除いても形状が崩れないため、キラル光学特性の発現は保持される。したがって、光メタマテリアルやナノマシンなどの次世代ナノ材料の開発を飛躍的に加速させることが期待できる。さらに本研究は有機分子の自己組織化と無機ナノ結晶の形態制御を融合させた学際分野創成の端緒となる。

Report

(3 results)
  • 2020 Annual Research Report   Final Research Report ( PDF )
  • 2019 Research-status Report
  • Research Products

    (16 results)

All 2021 2020 2019

All Journal Article (5 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 4 results,  Open Access: 2 results) Presentation (11 results) (of which Int'l Joint Research: 6 results)

  • [Journal Article] Controlling helical pitch of chiral supramolecular nanofibers composed of two amphiphiles2020

    • Author(s)
      Muneharu Minakawa, Makoto Nakagawa, Ke-Hsuan Wang, Yoshiro Imura, Takeshi Kawai
    • Journal Title

      Bulletin of the Chemical Society of Japan

      Volume: 93 Issue: 10 Pages: 1150-1154

    • DOI

      10.1246/bcsj.20200143

    • NAID

      130007926127

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Water-phase synthesis of ultrathin Au nanowires with a two-dimensional parallel array structure2020

    • Author(s)
      Naoya Miyajima, Yung-Chen Wang, Makoto Nakagawa, Hiroki Kurata, Yoshiro Imura, Ke-Hsuan Wang, Takeshi Kawai
    • Journal Title

      Bulletin of the Chemical Society of Japan

      Volume: 93 Issue: 11 Pages: 1372-1377

    • DOI

      10.1246/bcsj.20200183

    • NAID

      130007939774

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] 長鎖アミドアミン誘導体による極細貴金属ナノワイヤー合成2020

    • Author(s)
      皆川宗晴, 河合 武司
    • Journal Title

      Accounts of Materials&Science Research

      Volume: 5 Pages: 107-114

    • Related Report
      2020 Annual Research Report
  • [Journal Article] Gelation Properties of Various Long Chain Amidoamines: Prediction of Solvent Gelation via Machine Learning using Hansen Solubility Parameters2020

    • Author(s)
      Frederic Delbecq, Guillaume Adenier, Yuki Ogue, Takeshi Kawai
    • Journal Title

      Journal of Molecular Liquids

      Volume: 302 Pages: 112587-112587

    • DOI

      10.1016/j.molliq.2020.112587

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Synthesis of Water-Dispersible, Plate-like Perovskites and their Core-Shell Nanocrystals2020

    • Author(s)
      Muneharu Minakawa, Yoshiro Imura, Takeshi Kawai
    • Journal Title

      RSC Advances

      Volume: 10 Issue: 10 Pages: 5972-5977

    • DOI

      10.1039/d0ra00657b

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] Ag-Au合金網目状ナノワイヤーの水相合成とそのSERS特性2021

    • Author(s)
      吉祥 亮汰、ワン カーシェン、伊村 芳郎、河合 武司
    • Organizer
      日本化学会 第101春季年会
    • Related Report
      2020 Annual Research Report
  • [Presentation] 水および有機溶媒に分散性を持つ白金ナノワイヤーの調製と触媒特性2021

    • Author(s)
      飯田 一葵、伊村 芳郎、ワン カーシェン、河合 武司
    • Organizer
      日本化学会 第101春季年会
    • Related Report
      2020 Annual Research Report
  • [Presentation] ハイドロゲル中で合成した二重らせん金ナノワイヤー構造に及ぼす添加物の影響2020

    • Author(s)
      川崎 友希江・ワン カーシェン・伊村 芳郎・河合 武司
    • Organizer
      第10回 CSJ化学フェスタ
    • Related Report
      2020 Annual Research Report
  • [Presentation] ハイドロゲルを利用したらせん状金ナノ粒子配列の作製2020

    • Author(s)
      川崎 友希江・ワン カーシェン・伊村芳郎・河合 武司
    • Organizer
      日本油化学会 第59回年会
    • Related Report
      2020 Annual Research Report
  • [Presentation] 分子集合体を鋳型としたキラルな金ナノ構造体の合成および形態制御2020

    • Author(s)
      中川 充、懸橋 理枝、東海 直治、倉田 博基、河合 武司
    • Organizer
      第71回 コロイドおよび界面化学討論会
    • Related Report
      2020 Annual Research Report
  • [Presentation] Chirality-Controlled Synthesis of Double-Helical Au Nanowires2019

    • Author(s)
      Takeshi Kawai
    • Organizer
      Chirality 2019
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Synthesis of plate-like halide perovskite@Pd or Au nanocrystals2019

    • Author(s)
      Muneharu Minakawa, Kehsuan Wang, Yoshiro Imura, Takeshi Kawai
    • Organizer
      ECIS 2019
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Synthesis and bundle structures of ultrathin Au nanowires in water2019

    • Author(s)
      Naoya Miyajima, Yoshiro Imura, KeHsuan Wang, Takeshi Kawai
    • Organizer
      OKINAWA COLLOIDS 2019
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Improving Catalytic Activity of Alumina-supported Gold Nanoflowers by UV-Ozone Treatment2019

    • Author(s)
      Haruna Saito, Yoshiro Imura, KeHsuan Wang, Takeshi Kawai
    • Organizer
      OKINAWA COLLOIDS 2019
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Halide effects on the formation of gold micro- and nanostructures2019

    • Author(s)
      Siyang Cui, Yoshiro Imura, KeHsuan Wang, Takeshi Kawai
    • Organizer
      OKINAWA COLLOIDS 2019
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Size Control and Catalytic Performance of Gold Nanoflowers Supported on Alumina2019

    • Author(s)
      Motoki Maniwa, Yoshiro Imura, KeHsuan Wang, Takeshi Kawai
    • Organizer
      OKINAWA COLLOIDS 2019
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research

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Published: 2019-07-04   Modified: 2022-01-27  

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