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Fluorescence detection of hydrogen-bonding strength using ESIPT-type fluorescent probe

Research Project

Project/Area Number 21K05121
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 34020:Analytical chemistry-related
Research InstitutionComprehensive Research Organization for Science and Society

Principal Investigator

Akutsu Kazuhiro  一般財団法人総合科学研究機構, 中性子科学センター, 副主任技師 (60637297)

Co-Investigator(Kenkyū-buntansha) 森 聖治  茨城大学, 理工学研究科(理学野), 教授 (50332549)
元川 竜平  国立研究開発法人日本原子力研究開発機構, 原子力科学研究部門 原子力科学研究所 物質科学研究センター, 研究主幹 (50414579)
Project Period (FY) 2021-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2023: ¥520,000 (Direct Cost: ¥400,000、Indirect Cost: ¥120,000)
Fiscal Year 2022: ¥390,000 (Direct Cost: ¥300,000、Indirect Cost: ¥90,000)
Fiscal Year 2021: ¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000)
Keywords水素結合 / 中性子反射率 / 蛍光プローブ / HBI / 界面
Outline of Research at the Start

水素結合は、化学結合の中でも極性と指向性を併せ持つ唯一の結合であり、そのためタンパク質や高分子などの3次元構造形成において重要な働きを担い、更には物質の諸物性にも大きく関与している。従って、簡易かつ精度の高い水素結合力分析法を開発することは、水素結合力の直接的な観測と新奇材料の設計・開発に繋がる。本研究では、励起状態分子内プロトン移動(ESIPT)型の蛍光プローブHBIによる水素結合力分析法の基礎的な方法論の構築に加え、本手法と中性子反射率法と組み合わせた革新的な多角的物質研究法を確立する。

Outline of Final Research Achievements

Hydrogen bonds are the only chemical bonds with polarity and directional character, and are important bonds that play an important role in the formation of three-dimensional structures in organic compounds, especially in large molecules such as proteins and polymers. In this study, we developed the basic methodology for hydrogen bonding strength analysis using the fluorescent molecule 2-(2'-hydroxyphenyl)benzimidazole (HBI). Furthermore, neutron reflectometry (which is a promising method for nanostructure analysis at the material surface and interface) and fluorescence analysis are combined in a method we have developed for simultaneous analysis. We demonstrated the simultaneous analysis of hydrogen bonding strength and thin layer structure of thin film samples using the simultaneous measurement method.

Academic Significance and Societal Importance of the Research Achievements

上記の通り、蛍光-中性子反射率同時測定装置を開発することは、物質の水素結合力とナノ構造の相関に関する理解を深化させることを可能とする。接着剤や繊維強化プラスチックなどの複合材料はそれら材料界面の水素結合力・ナノ構造・機能の相関の解明が重要であり、本研究の成果は水素結合力とナノ構造の直接的な観測を可能にするのみならず、新奇材料の設計・開発にも繋がるものと期待できる。

Report

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

    (9 results)

All 2024 2023 2022 2021 Other

All Int'l Joint Research (2 results) Journal Article (1 results) (of which Peer Reviewed: 1 results,  Open Access: 1 results) Presentation (6 results) (of which Int'l Joint Research: 3 results)

  • [Int'l Joint Research] ANSTO-NDF(オーストラリア)

    • Related Report
      2023 Annual Research Report
  • [Int'l Joint Research] ANSTO-NDF(オーストラリア)

    • Related Report
      2022 Research-status Report
  • [Journal Article] New Design of a Sample Cell for Neutron Reflectometry in Liquid-Liquid Systems and Its Application for Studying Structures at Air-Liquid and Liquid-Liquid Interfaces2022

    • Author(s)
      Akutsu-Suyama Kazuhiro、Yamada Norifumi L.、Ueda Yuki、Motokawa Ryuhei、Narita Hirokazu
    • Journal Title

      Applied Sciences

      Volume: 12 Issue: 3 Pages: 1215-1215

    • DOI

      10.3390/app12031215

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] 蛍光分析法と中性子反射率法を協奏的に利用した界面構造/物性同時計測法の開発2024

    • Author(s)
      阿久津 和宏、花島 隆泰、森 聖治
    • Organizer
      2023年度量子ビームサイエンスフェスタ
    • Related Report
      2023 Annual Research Report
  • [Presentation] 化学重水素化法開発の現状と課題2023

    • Author(s)
      阿久津 和宏、上田 実咲、柴山 充弘
    • Organizer
      日本中性子科学会第23回年会
    • Related Report
      2023 Annual Research Report
  • [Presentation] Current status of deuteration technologies in CROSS laboratory2023

    • Author(s)
      Kazuhiro Akutsu
    • Organizer
      J-PARC Workshop 2022, Deuterium Science Entering a New Phase
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Presentation] Recent highlights and perspectives on chemical deuteration activities in CROSS2023

    • Author(s)
      Kazuhiro Akutsu, Misaki Ueda, and Mitsuhiro Shibayama
    • Organizer
      European Conference on Neutron Scattering 2023
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Presentation] Development of Sample Deuteration and Analysis Systems2022

    • Author(s)
      阿久津 和宏、佐原 雅恵、上田 実咲、鈴木 淳市
    • Organizer
      2021年度量子ビームサイエンスフェスタ
    • Related Report
      2021 Research-status Report
  • [Presentation] Recent Activity_Chemical Deuteration2021

    • Author(s)
      Kazuhiro Akutsu
    • Organizer
      DEUNET Virtual meeting
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research

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

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