• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Identification of chirarity and absolute configuration of molecules by using atom probe

Research Project

Project/Area Number 19K05188
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 InstitutionKanazawa Institute of Technology

Principal Investigator

Taniguchi Masahiro  金沢工業大学, バイオ・化学部, 教授 (30250418)

Co-Investigator(Kenkyū-buntansha) 小野 慎  金沢工業大学, バイオ・化学部, 教授 (10214181)
Project Period (FY) 2019-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2021: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2020: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
Fiscal Year 2019: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Keywordsatom probe / field ion microscopy / surface analysis / chiral discrimination / mass spectroscopy / metal chelate / アトムプローブ / 光学異性 / 絶対配置 / 分子不斉 / 電界イオン顕微鏡 / トロイダル静電レンズ / 有機分子 / 質量分析 / キラリティ / ペプチド
Outline of Research at the Start

我々の手足に右、左の区別があるように、物質を構成する単位である分子にも右と左の区別があります。ただし、単独の分子に対して右・左を識別できる方法は非常に限られており、その実験データの解釈は直截ではありません。そこで本研究は分子を直接見て、それを部分的に分解して生じる断片の質量を測定する(質量分析)します。それによって、その分子の各部分の位置関係を判定し、右・左の違いを直に確かめることを目指します。

Outline of Final Research Achievements

The combined instrument of field ion microscope and atom probe mass analyzer (FIM-AP) enables the atomic scale structural observation and the identification by mass analysis in an atom-by-atom manner. In this research, the energy filtering by a toroidal sector lens and the deflection/shifting of the FIM image was installed to the conventional FIM-AP instrument to enable the synchronous operation of FIM and AP in an atom-by-atom sequence. The new system showed the detection efficiency of ca. 1/3 against surface atoms desorbed in a sequence of field evaporation of tungsten.
The candidate species were searched for the determination of the absolute chirality of an isolated molecule by mass spectrometry. The triply or doubly chelated metal chelate complexes of phenanthroline ligand were successfully AP analyzed by using carbon fiber as substrate (filed emitter). The mass spectra showed the dissociation of bidentate ligands was dominant and the desorbed species were easily identified.

Academic Significance and Societal Importance of the Research Achievements

本研究は表面での実空間、原子スケールでの構造情報(電界イオン顕微鏡)とイオン一個ずつの検出を行なう質量分析法(アトムプローブ)による化学種同定によって、分子不斉の決定を表面で行おうとするものである。この方法は分子スケール局所領域での検出能を必要とするために、イオンの検出効率を最大限かつ個数レベルで明確にする必要がある。
本研究で改良したFIM-APによって、脱離したイオンを実際に補足できたかどうかを個数レベルで構造情報と連動して捉えられうようになった。この知見は現在主流になりつつある3次元アトムプローブの基礎情報ともなるものである。

Report

(5 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • 2020 Research-status Report
  • 2019 Research-status Report
  • Research Products

    (7 results)

All 2023 2022 2021 2020 2019

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

  • [Journal Article] Scanning Atom Probe Analysis of Metal Chelate Compound2023

    • Author(s)
      Yasuo Yamauchi, Masahiro Taniguchi
    • Journal Title

      e-Journal of Surface Science and Nanotechnology

      Volume: 21 Issue: 4 Pages: 267-272

    • DOI

      10.1380/ejssnt.2023-045

    • ISSN
      1348-0391
    • Year and Date
      2023-05-18
    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Atom Probe Analysis of One Dimensional Organic Chain: Polyethylene Glycol2020

    • Author(s)
      谷口昌宏
    • Journal Title

      e-Journal of Surface Science and Nanotechnology

      Volume: 18 Issue: 0 Pages: 208-213

    • DOI

      10.1380/ejssnt.2020.208

    • NAID

      130007848470

    • ISSN
      1348-0391
    • Year and Date
      2020-05-28
    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] Scanning atom probe analysis of metal chelate compount2022

    • Author(s)
      山内康生 (Yasuo Yamauchi)、谷口昌宏 (Masahiro Taniguchi)
    • Organizer
      14th International Symposium of Atomic Lebel Characterizations for New Materials and Devices '22
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] FIM image acquisition by means of deflector during atom probe analysis2022

    • Author(s)
      谷口昌宏 (Masahiro Taniguchi)、山内康生 (Yasuo Yamauchi)、吉川兼史 (Kenji Yoshikawa)
    • Organizer
      14th International Symposium of Atomic Lebel Characterizations for New Materials and Devices '22
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 偏向電極によるFIM-Poschenrieder-Atom Probeでの FIM-AP交互測定2021

    • Author(s)
      谷口昌宏
    • Organizer
      2021年 日本表面真空学会学術講演会
    • Related Report
      2021 Research-status Report
  • [Presentation] Poschenrieder-Atom Probeの再検討2020

    • Author(s)
      谷口昌宏
    • Organizer
      2020年日本表面真空学会学術講演会
    • Related Report
      2020 Research-status Report
  • [Presentation] Atom probe analysis of polyethylene glycol2019

    • Author(s)
      谷口昌宏
    • Organizer
      12th International Symposium on Atomic Level Characterizations for New Materials and Devices '19
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research

URL: 

Published: 2019-04-18   Modified: 2024-01-30  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi