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Development of a method for immobilizing functional molecules on solid-liquid interfaces using self-assembled monolayers

Research Project

Project/Area Number 20K05251
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 28010:Nanometer-scale chemistry-related
Research InstitutionNational Institute of Advanced Industrial Science and Technology

Principal Investigator

Nakano Miki  国立研究開発法人産業技術総合研究所, エレクトロニクス・製造領域, 主任研究員 (20415722)

Co-Investigator(Kenkyū-buntansha) 松田 直樹  国立研究開発法人産業技術総合研究所, エレクトロニクス・製造領域, 上級主任研究員 (10344219)
Project Period (FY) 2020-04-01 – 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 2022: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2021: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2020: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Keywords固液界面 / 機能性分子 / 吸着 / 自己組織化膜 / 脱離 / 吸収スペクトル / タンパク質 / 表面、界面 / 自己組織化単分子膜 / 固定化
Outline of Research at the Start

機能性分子をセンサ素子等のデバイス応用として用いる際、機能を維持した状態で固液界面に分子を固定する必要がある。本研究ではガラス等の固体表面と水溶液からなる固液界面にシラン化合物等の自己組織化単分子膜を種々の条件で形成させ、タンパク質等の機能性分子の固定を行う。固液界面の自動洗浄機構とスラブ光導波路(SOWG)分光法による吸収スペクトル変化のその場観察を組み合わせ、これら機能性分子の固定割合と分子機能維持の確認を行い、SAM膜形成方法最適化の指針を得る。

Outline of Final Research Achievements

The largest technical issue to the development of devices utilizing interfaces is that it is impossible to confirm the immobilized ratio from the adsorbed molecules and if these immobilized molecules maintain their function or not. To control the interfacial phenomena, it is of much importance to narrow down which reagent for making self-assembled monolayer (SAM) should be used. In this study, in-situ observations with slab optical waveguide spectroscopy were established as a method to evaluate the fixation ratio of adsorbed molecules and their functional maintenance. Cytochrome c (Cytc) fixation ratio was significantly increased, and redox function was maintained when thin glass sheets with SAM of hydrophobic silane and hydrophilic phosphonic acid compounds were used. Furthermore, when the adsorption time of Cytc increased prior to the evaluation of the fixation ratio, the immobilized ratio increased, suggesting that the conformational change of Cytc induced because of the adsorption.

Academic Significance and Societal Importance of the Research Achievements

最先端技術でも固液界面におけるその場観察は対象物質が極微少量のため吸着量の変化や分子の機能維持判定は非常に困難である。そこで本研究では吸着の絶対量変化ではなく、吸着量の減少割合を可視領域の吸収スペクトル減少から計測した点で独創的な研究内容であり学術的意義が大きい。これらの成果が今後のデバイス開発に積極的に用いられることを想定すると、社会的意義も大きい。

Report

(5 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • 2021 Research-status Report
  • 2020 Research-status Report
  • Research Products

    (7 results)

All 2023 2022 2021 2020

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

  • [Journal Article] Highly stable gold nanoparticles in an aqueous solution without any stabilizer prepared by a solution plasma process evaluated through capillary zone electrophoresis2022

    • Author(s)
      Takayanagi Toshio、Miyake Koji、Iwasaki Sohta、Uehara Daiki、Mizuguchi Hitoshi、Okabe Hirotaka、Matsuda Naoki
    • Journal Title

      Analytical Sciences

      Volume: 38 Issue: 9 Pages: 1199-1206

    • DOI

      10.1007/s44211-022-00149-9

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Three distinct adsorbed states of adenine on gold nanoparticles depending on pH in aqueous solutions2022

    • Author(s)
      T. Yoshimoto, M. Seki, H. Okabe b, N. Matsuda, De-yin Wu, M. Futamata
    • Journal Title

      Chemical Physics Letters

      Volume: 786 Pages: 139202-139202

    • DOI

      10.1016/j.cplett.2021.139202

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Alginate-Stabilized Gold Nanoparticles Prepared Using the Microwave-Induced Plasma-in-Liquid Process with Long-Term Storage Stability for Potential Biomedical Applications2022

    • Author(s)
      Liu Haoran、Ikeda Kai、Nguyen Mai Thanh、Sato Susumu、Matsuda Naoki、Tsukamoto Hiroki、Tokunaga Tomoharu、Yonezawa Tetsu
    • Journal Title

      ACS Omega

      Volume: 7 Issue: 7 Pages: 6238-6247

    • DOI

      10.1021/acsomega.1c06769

    • Related Report
      2021 Research-status Report
  • [Journal Article] Enhancement effects of metal nanostructures and metal nanofilms on various emissions by interactions of photons with materials or molecules2021

    • Author(s)
      Nagamura Toshihiko、Kawai Hideki、Matsuda Naoki
    • Journal Title

      Molecular Crystals and Liquid Crystals

      Volume: 728 Issue: 1 Pages: 59-81

    • DOI

      10.1080/15421406.2021.1946969

    • Related Report
      2021 Research-status Report
  • [Journal Article] Direct Electron Transfer Reaction of Cytochrome c Immobilized on a Bare ITO Electrode2021

    • Author(s)
      Matsuda Naoki、Okabe Hirotaka、Nagamura Toshihiko、Nakano Koji
    • Journal Title

      Bulletin of the Chemical Society of Japan

      Volume: 94 Issue: 2 Pages: 433-439

    • DOI

      10.1246/bcsj.20200192

    • NAID

      130007995392

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] In situ observation of immobilized fraction of cytochrome c adsorbed on solid/liquid interfaces by slab optical waveguide spectroscopy2023

    • Author(s)
      Miki Nakano, Hirotaka Okabe, Naoki Matsuda
    • Organizer
      MRM2023/IUMRS-ICA2023
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] In situ observation of desorption reaction and immobilization of cytochrome c on solid/liquid interfaces by slab optical waveguide spectroscopy2020

    • Author(s)
      Naoki Matsuda and Hirotaka Okabe
    • Organizer
      ISOME2020
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research / Invited

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Published: 2020-04-28   Modified: 2025-01-30  

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