• 研究課題をさがす
  • 研究者をさがす
  • KAKENの使い方
  1. 課題ページに戻る

2023 年度 実績報告書

Electron Scattering and Electron Angular Anisotropy in Water and Aqueous Solution

研究課題

研究課題/領域番号 20K15229
研究機関京都大学

研究代表者

THUERMER STEPHAN  京都大学, 理学研究科, 准教授 (40722161)

研究期間 (年度) 2020-04-01 – 2024-03-31
キーワードelectron spectroscopy / electron scattering / liquid water / photoelectron anisotropy / aqueous solution
研究実績の概要

The project is about electron scattering mechanisms in liquid water and aqueous solutions and its impact on photoelectron angular distributions using photoelectron spectroscopy in international collaboration. Electron scattering is crucial for understanding energy deposition, radical formation, and biological damage by slow and fast electrons, and for interpreting of spectra from aqueous solutions.
The last year had several applications of the newly found understanding of electron scattering. Various surface-active solutes were studied, ranging from atmospherically-relevant organic molecular ions to prototypical species, which change their surface propensity as a function of pH value (i.e., the protonation state of the molecule). The former showed than the presence of multiple surface-active species can have a cooperative effect, strongly enhancing their surface propensity. This has large implications for the availability of species in atmospheric reactions. For the latter, we could show that the photoelectron signal and angular distribution are sensitively dependent on the surface propensity, which can be used as a precise depth scale into the solution. These studies are prepared for publication.
A newly developed method enabled us to study the work function (surface potential) and changes of the electronic structure of an aqueous solution as a function of solute concentration for the first time. This lays the foundation for extracting electrochemically relevant parameters, such as the electrochemical potential from aqueous solution, directly via photoelectron spectroscopy.

  • 研究成果

    (13件)

すべて 2024 2023 その他

すべて 国際共同研究 (3件) 雑誌論文 (3件) (うち国際共著 3件、 査読あり 3件、 オープンアクセス 3件) 学会発表 (5件) (うち国際学会 4件、 招待講演 1件) 備考 (2件)

  • [国際共同研究] Fritz Haber Institute/Helmholtz Zentrum Berlin/DESY Hamburg(ドイツ)

    • 国名
      ドイツ
    • 外国機関名
      Fritz Haber Institute/Helmholtz Zentrum Berlin/DESY Hamburg
  • [国際共同研究] J. Heyrovsky Institute of Phys. Chem./University of Chemistry and Technology(チェコ)

    • 国名
      チェコ
    • 外国機関名
      J. Heyrovsky Institute of Phys. Chem./University of Chemistry and Technology
  • [国際共同研究] Uppsala University(スウェーデン)

    • 国名
      スウェーデン
    • 外国機関名
      Uppsala University
  • [雑誌論文] Radiationless Decay Spectrum of O 1s Double Core Holes in Liquid Water2024

    • 著者名/発表者名
      Trinter Florian, Inhester Ludger, Puettner Ralph, Malerz Sebastian, Thuermer Stephan, Marchenko Tatiana, Piancastelli Maria-Novella, Simon Marc, Winter Bernd, Hergenhahn Uwe
    • 雑誌名

      The Journal of Chemical Physics

      巻: - ページ: -

    • DOI

      10.1063/5.0205994

    • 査読あり / オープンアクセス / 国際共著
  • [雑誌論文] Photoelectron spectroscopy from a liquid flatjet2023

    • 著者名/発表者名
      Stemer Dominik、Buttersack Tillmann、Haak Henrik、Malerz Sebastian、Schewe Hanns Christian、Trinter Florian、Mudryk Karen、Pugini Michele、Credidio Bruno、Seidel Robert、Hergenhahn Uwe、Meijer Gerard、Thuermer Stephan、Winter Bernd
    • 雑誌名

      The Journal of Chemical Physics

      巻: 158 ページ: 234202

    • DOI

      10.1063/5.0155182

    • 査読あり / オープンアクセス / 国際共著
  • [雑誌論文] How to measure work functions from aqueous solutions2023

    • 著者名/発表者名
      Pugini Michele、Credidio Bruno、Walter Irina、Malerz Sebastian、Trinter Florian、Stemer Dominik、Hergenhahn Uwe、Meijer Gerard、Wilkinson Iain、Winter Bernd、Thuermer Stephan
    • 雑誌名

      Chemical Science

      巻: 14 ページ: 9574~9588

    • DOI

      10.1039/D3SC01740K

    • 査読あり / オープンアクセス / 国際共著
  • [学会発表] How to measure work functions from aqueous solutions2023

    • 著者名/発表者名
      Stephan Thuermer
    • 学会等名
      第17回分子科学討論会
  • [学会発表] Photoelectron spectroscopy of Liquids: Accessing Electronic Energetics and Surface Properties2023

    • 著者名/発表者名
      Stephan Thuermer
    • 学会等名
      UVSOR-III+MAX IV International Workshop
    • 国際学会 / 招待講演
  • [学会発表] Shake-up and shake-off satellites as probe of ultrafast charge delocalization in liquid water2023

    • 著者名/発表者名
      Florian Trinter, Bernd Winter, Stephan Thuermer
    • 学会等名
      XXXIII International Conference on Photonic, Electronic and Atomic Collisions
    • 国際学会
  • [学会発表] Photoelectron Circular Dichroism from Aqueous-Phase Biomolecules2023

    • 著者名/発表者名
      M. Pugini, K. Mudryk, D. Stemer, L. Tomanik, S. Malerz, F. Trinter, T. Buttersack, U. Hergenhahn, I. Wilkinson, S. Thuermer, P. Slavicek, G. Meijer, B. Winter
    • 学会等名
      DESY Photon Science Users' Meeting 2023
    • 国際学会
  • [学会発表] Expanding Liquid-Jet Photoelectron Spectroscopy to Liquid Flatjets2023

    • 著者名/発表者名
      Stemer Dominik、Buttersack Tillmann、Haak Henrik、Malerz Sebastian、Schewe Hanns Christian、Trinter Florian、Mudryk Karen、Pugini Michele、Credidio Bruno、Seidel Robert、Hergenhahn Uwe、Meijer Gerard、Thuermer Stephan、Winter Bernd
    • 学会等名
      BESSY user meeting 2023
    • 国際学会
  • [備考] Google Scholar User Profile

    • URL

      https://scholar.google.com/citations?user=05yx0h0AAAAJ

  • [備考] Kyoto University Activity Dtabase

    • URL

      https://kdb.iimc.kyoto-u.ac.jp/profile/ja.7b8f7b2e37181b16.html

URL: 

公開日: 2024-12-25  

サービス概要 検索マニュアル よくある質問 お知らせ 利用規程 科研費による研究の帰属

Powered by NII kakenhi