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Development of a protic-ionic-liquid beam source toward high-sensitivity and high-lateral-resolution SIMS imaging of organic materials

Research Project

Project/Area Number 16K05832
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Analytical chemistry
Research InstitutionNational Institute of Advanced Industrial Science and Technology

Principal Investigator

Fujiwara Yukio  国立研究開発法人産業技術総合研究所, 計量標準総合センター, 研究グループ長 (60415742)

Project Period (FY) 2016-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2018: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2017: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2016: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Keywords分析化学 / 表面分析 / 二次イオン質量分析 / SIMS / イオンビーム / クラスター / イオン液体 / プロトン / クラスターイオン / エレクトロスプレー / プロトン化 / 質量分析
Outline of Final Research Achievements

Ionic liquids can be divided into two broad categories, aprotic ionic liquids (AILs) and protic ionic liquids (PILs). A wide variety of PILs has been commercially available; among these, propylammonium nitrate was selected in view of chemico-physical properties such as meting point and proton affinity. Emission of cluster ions from a sharped rod wetted with liquid, which is an important phenomenon in liquid metal ion sources, was investigated using propylammonium nitrate. A stable cluster ion beam was generated from a tip of a sharpened rod wetted with propylammonium nitrate. The cluster ion beam was tested as a primary ion beam in time-of-flight secondary ion mass spectrometry of organic materials. The cluster ion beam proved to be useful for enhancing molecular ionization of organic materials.

Academic Significance and Societal Importance of the Research Achievements

分子量の大きな有機分子を含有する分析試料を高感度かつ高面分解能で二次イオン質量分析(SIMS)することは、既存技術では困難であり、大きな課題となっている。本研究では、プロトン性イオン液体を用いることで有機分子の二次イオン量を増大できることを明らかにした。また液体金属イオン源の原理を参考として、先端を尖らせた針型エミッターを用いたプロトン性イオン液体のビーム生成技術も開発し、SIMS分析に応用可能であることも実証できた。本研究の成果は、高感度かつ高面分解なSIMS分析の実現に寄与するものと考えられる。

Report

(4 results)
  • 2018 Annual Research Report   Final Research Report ( PDF )
  • 2017 Research-status Report
  • 2016 Research-status Report
  • Research Products

    (5 results)

All 2018 2017

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

  • [Journal Article] Cluster ion beam generation from a wetted needle emitter for organic secondary ion mass spectrometry (organic SIMS) using a protic ionic liquid, propylammonium nitrate2018

    • Author(s)
      Yukio Fujiwara , Naoaki Saito
    • Journal Title

      Rapid Commun Mass Spectrom.

      Volume: 32 Issue: 21 Pages: 1867-1874

    • DOI

      10.1002/rcm.8256

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Time-of-flight secondary ion mass spectrometry using a new primary ion beam generated by vacuum electrospray of a protic ionic liquid, propylammonium nitrate2017

    • Author(s)
      Fujiwara Yukio、Saito Naoaki
    • Journal Title

      Rapid Communications in Mass Spectrometry

      Volume: 31 Issue: 22 Pages: 1859-1867

    • DOI

      10.1002/rcm.7960

    • Related Report
      2017 Research-status Report
    • Peer Reviewed
  • [Presentation] 液体金属イオン源方式のプロトン性イオン液体ビーム源の開発:有機イメージング質量分析の感度と面分解能の向上2018

    • Author(s)
      藤原幸雄、齋藤直昭
    • Organizer
      日本表面真空学会学術講演会
    • Related Report
      2018 Annual Research Report
  • [Presentation] 針型エミッターからのプロトン性イオン液体のビーム生成: 高集束性かつ高感度なSIMS用クラスターイオン源を目指して2018

    • Author(s)
      藤原幸雄、齋藤直昭
    • Organizer
      第65回 応用物理学会 春季学術講演会
    • Related Report
      2017 Research-status Report
    • Invited
  • [Presentation] A new primary ion beam source using vacuum electrospray of protic ionic liquids2017

    • Author(s)
      Yukio Fujiwara, Naoaki Saito
    • Organizer
      The 21th International Conference on Secondary Ion Mass Spectrometry (SIMS XXI)
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research

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Published: 2016-04-21   Modified: 2020-03-30  

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