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Electron transfer channel in the sugar recognition system assembled on nano gold particle

Research Project

Project/Area Number 21K03452
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 13030:Magnetism, superconductivity and strongly correlated systems-related
Research InstitutionSophia University

Principal Investigator

Goto Takayuki  上智大学, 理工学部, 教授 (90215492)

Co-Investigator(Kenkyū-buntansha) 橋本 剛  上智大学, 理工学部, 教授 (20333049)
Project Period (FY) 2021-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2023: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2022: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2021: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
KeywordsNMR / muSR / 一次元スピン拡散 / 糖認識センサー / ボロン酸糖認識 / 糖センサー / μSR / スピン拡散 / 糖分子センサー / 金微粒子 / 超微粒子 / 一次元
Outline of Research at the Start

ナノサイズ金微粒子表面にボロン酸分子(糖認識部位)とルテニウム錯体(電気化学部位)をアルキル鎖で結合させた糖分子認識センサーは,糖検出感度の圧倒的高さで注目されているがその微視的機構は不明である。ボロン酸からアルキル一次元鎖を経由してルテニウム錯体まで,いかに電子状態が伝達されるか,金ナノ粒子の電子状態が糖検出にどのようにかかわっているかを解明することは,センサー開発の応用面からも重要である。
本研究ではアルキル鎖上の低次元スピン拡散と,金属ナノ粒子の電子状態の検出を,NMRとμSRを用いて行うことで糖分子の糖検出機構解明を行うとともに,コンポジット磁性体としての新奇な磁性の探索に臨む。

Outline of Final Research Achievements

Existence of 1D spin diffusion in the electrochemical sugar recognition system consisting of a nano-sized gold particle, a ruthenium complex and a phenylboronic acid was investigated by NMR and muSR. When sugar molecules are recognized by the phenylboronic site, the response of electrochemical voltammetry of the Ru site changes, enabling the system to work as a sensitive sugar-sensor. In this recognition process, the change in the electronic state at the boron site caused by sugar must be transferred to the Ru site via alkyl chains. We have utilized the muon-labelled electrons method and the proton NMR to find out a channel of the electron transfer from the phenylboronic acid site to the gold nano particle via 1D alkyl chain. We have observed significant decrease in the spin relaxation rates with increasing applied field. The result is discussed in terms of low dimensional spin diffusion.

Academic Significance and Societal Importance of the Research Achievements

糖は生体におけるエネルギー源であり,殆どの生命現象に関与する。中でも生物の活動エネルギーである血液中のグルコースは,生命の維持に大きくかかわっており,インスリン等のホルモンによる濃度調整機構が不全となると糖尿病と診断される。糖センサーは医療において需要が高く,糖以外の分子も含め,高感度で高選択性を持つセンサーの開発は,現代社会において喫緊の課題の一つである。しかしながら,現時点で,分子認識が電気化学部位へどのように情報伝達されるのかと言う機構はほとんどわかっていなかった。今回、一次元スピン拡散の存在が明らかになったことで、新規センサー開発の一助となることが期待される、

Report

(4 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • 2021 Research-status Report
  • Research Products

    (10 results)

All 2023 2022 2021 Other

All Journal Article (4 results) (of which Peer Reviewed: 4 results,  Open Access: 1 results) Presentation (5 results) (of which Int'l Joint Research: 3 results,  Invited: 2 results) Remarks (1 results)

  • [Journal Article] Electron Transfer Channel in the Sugar Recognition System Assembled on Nano Gold Particle2023

    • Author(s)
      Goto Takayuki、Hashimoto Takeshi、Sato Kai、Kitamoto Yukihiro、Hayashita Takashi、Iguchi Satoshi、Sasaki Takahiko、Sari Dita Puspita、Watanabe Isao
    • Journal Title

      Journal of the Physical Society of Japan

      Volume: 92 Issue: 12 Pages: 124705-124705

    • DOI

      10.7566/jpsj.92.124705

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Magnetic phase diagram in the three-dimensional triangular-lattice antiferromagnet Sr3CoTa2O9 with small easy-axis anisotropy2023

    • Author(s)
      Nishizawa Iori、Kurita Nobuyuki、Tanaka Hidekazu、Goto Takayuki
    • Journal Title

      Physical Review B

      Volume: 107 Issue: 17 Pages: 174419-174425

    • DOI

      10.1103/physrevb.107.174419

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Electrochemical detection of boric acid using gallacetophenonato-(β-diketonato) ruthenium complex in water2023

    • Author(s)
      Sato Kai、Kimoto Hiroshi、Hayashita Takashi、Hashimoto Takeshi
    • Journal Title

      Analytical Sciences

      Volume: 22 Issue: 7 Pages: 3090-3094

    • DOI

      10.1007/s44211-023-00316-6

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Contrasting magnetic structures in SrLaCuSbO6 and SrLaCuNbO6: spin-1/2 square-lattice J1-J2 Heisenberg antiferromagnets2022

    • Author(s)
      M. Watanabe, N. Kurita, H. Tanaka, W. Ueno, K. Matsui, T. Goto and M. Hagihala
    • Journal Title

      Phys. Rev. B

      Volume: 105 Issue: 5 Pages: 1-12

    • DOI

      10.1103/physrevb.105.054414

    • Related Report
      2022 Research-status Report 2021 Research-status Report
    • Peer Reviewed
  • [Presentation] 金ナノ粒子を用いた糖センサーにおける一次元スピン拡散2023

    • Author(s)
      後藤貴行,佐藤海,橋本剛,早下隆士,井口敏^A^,佐々木孝彦^A^,Dita Puspita Sari^B^,渡邊功雄^C^
    • Organizer
      日本物理学会
    • Related Report
      2023 Annual Research Report
  • [Presentation] NMR and muSR study on sugar recognition system based on gold nano particles (invited) Takayuki Goto, , Takeshi Hashimoto , Kai Sato, Yukihiro Kitamoto, Takashi Hayashita, Satoshi Iguchi, Takahiko Sasaki, Dita Puspita Sari and Isao Watanabe2023

    • Author(s)
      後藤貴行,佐藤海,橋本剛,早下隆士,井口敏^A^,佐々木孝彦^A^,Dita Puspita Sari^B^,渡邊功雄^C^
    • Organizer
      International Symposium on Inorganic and Environmental Materials (19-23 June 2023, Montpellier, France)
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] . “NMR and μ-SR study on the sugar recognition complex assembled on nano gold particles”2023

    • Author(s)
      Takayuki Goto,Takeshi Hashimoto,Kai Sato, Takashi Hayashita, Takahiko Sasaki,
    • Organizer
      ICFMS 2022 and RIKEN symposium, 2023/11/29-30
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] “The electron transfer channel in the sugar recognition system assembled on nano gold particles2023

    • Author(s)
      Takayuki Goto,Takeshi Hashimoto,Kai Sato, Takashi Hayashita, Takahiko Sasaki,
    • Organizer
      MuSR2020(2022開催), 2022/08/28-09/02,イタリア(パルマ)
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Presentation] NMRとμSRで見た金ナノ微粒子コンポジット糖認識センサーにおける一次元スピン拡散2021

    • Author(s)
      後藤貴行,橋本剛,早下隆士,渡邊功雄,Dita Puspita Sari
    • Organizer
      日本物理学会
    • Related Report
      2021 Research-status Report
  • [Remarks] 5. 金属ナノ粒子を用いた電気化学

    • URL

      http://www.mls.sophia.ac.jp/~analysis/research.html

    • Related Report
      2023 Annual Research Report

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Published: 2021-04-28   Modified: 2025-01-30  

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