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

Elucidation of modifier effect by microspectroscopy using a capillary cell in supercritical CO2

Research Project

Project/Area Number 17K05893
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Analytical chemistry
Research InstitutionIbaraki University

Principal Investigator

Ohashi Akira  茨城大学, 理工学研究科(理学野), 准教授 (50344833)

Project Period (FY) 2017-04-01 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥3,380,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥780,000)
Fiscal Year 2019: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2018: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2017: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Keywords超臨界二酸化炭素 / 溶解度 / モディファイヤー効果 / 顕微ラマン分光法 / キャピラリーセル / 金属錯体 / 共鳴ラマンスペクトル / モディファイヤー / 顕微共鳴ラマン分光法 / 紫外可視吸光光度法 / ピリジルアゾフェノール / 水素結合 / ラマン分光法
Outline of Final Research Achievements

In order to clarify the factors that improve the solubility of metal complexes in supercritical carbon dioxide (SC-CO2) with the addition of hydrogen bond-donating modifiers, the device of Raman spectroscopy using a square fused silica capillary as a spectroscopic cell was developed. The Raman spectrum of Fe(acac)3 complex was changed with the addition of modifier. In addition, the degree of the change increased as the modifier's hydrogen bond donating ability increased. From these results, it was clarified that the remarkable improvement of the solubility of the metal complex in SC-CO2 with the addition of the hydrogen bond-donating modifier is due to the formation of the metal complex-modifier association via the hydrogen bond.

Academic Significance and Societal Importance of the Research Achievements

角型キャピラリーを分光セルに用いる本システムは、既存のレーザー顕微分光システムに比較的安価に組み込むことが可能である.本研究で開発した装置により、吸光度からSC-CO2相に溶解している分析物の定量、ラマンスペクトルから分析物の構造情報を同時に得ることが可能になった。本装置は、超臨界二酸化炭素相中での溶質とモディファイヤー間の相互作用を検討するうえで有用な分析装置であると考えられる。

Report

(4 results)
  • 2019 Annual Research Report   Final Research Report ( PDF )
  • 2018 Research-status Report
  • 2017 Research-status Report
  • Research Products

    (10 results)

All 2021 2019 2018 2017

All Journal Article (4 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 4 results,  Open Access: 1 results) Presentation (6 results) (of which Int'l Joint Research: 1 results,  Invited: 1 results)

  • [Journal Article] Crystallization Mechanism of Palladium(II)-Pyridylazophenol Complex at the Liquid-Liquid Interface2021

    • Author(s)
      A. Ohashi, T. Kiminarita
    • Journal Title

      Solvent Extr. Res. Dev., Jpn.

      Volume: 28

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Structural Evaluation of the Aggregate of Palladium(II)-Pyridylazophenol Complex at the Heptane-Water Interface by the Centrifugal Liquid Membrane Method2017

    • Author(s)
      A. Ohashi, T. Kiminarita, H. Watarai
    • Journal Title

      Solvent Extraction Research and Development, Japan

      Volume: 24 Issue: 2 Pages: 105-111

    • DOI

      10.15261/serdj.24.105

    • NAID

      130005689384

    • ISSN
      1341-7215, 2188-4765
    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Effects of Calcium Ions on the Thermostability and Spectroscopic Properties of the LH1-RC complex from a New Thermophilic Purple Bacterium Allochromatium tepidum2017

    • Author(s)
      Kimura, Y.*, Lyu, S., Okoshi, A., Okazaki, K., Nakamura, N., Ohashi, A., Ohno, T., Kobayashi, M., Imanishi, M., Takaichi, S., Madigan, M. T., Wang-Otomo, Z.-Y.
    • Journal Title

      J. Phys. Chem. B

      Volume: 121 Issue: 19 Pages: 5025-5032

    • DOI

      10.1021/acs.jpcb.7b03341

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Measurement of the Aggregates of Anionic Porphyrin with Cationic Surfactants at the Supercritical Carbon Dioxide/Water Interface by Total Internal Reflection Spectroscopy2017

    • Author(s)
      A. Ohashi, M. Endo, K. Yamagishi, H.-B. Kim
    • Journal Title

      Proceedings of The 21th International Solvent Extraction Conference (ISEC2017)

      Volume: 1 Pages: 15-19

    • Related Report
      2017 Research-status Report
    • Peer Reviewed
  • [Presentation] カチオン性界面活性剤の構造の違いが超臨界二酸化炭素/水界面でのTPPS会合体生成に及ぼす影響の解明2019

    • Author(s)
      鈴木智明・山岸康平・遠藤真輝・佐々木崇成・大橋朗
    • Organizer
      第38回溶媒抽出討論会
    • Related Report
      2019 Annual Research Report
  • [Presentation] 第三級アミンを有する8-キノリノールビス体を用いた第13族元素のイオン液体抽出2019

    • Author(s)
      大橋朗 ・ 齋藤壮 ・ 黒田智 ・ 金幸夫
    • Organizer
      日本分析化学会第68年会
    • Related Report
      2019 Annual Research Report
  • [Presentation] 超臨界二酸化炭素抽出系における新規な分離・検出系に関する研究2019

    • Author(s)
      大橋朗
    • Organizer
      第16回茨城地区分析技術交流会
    • Related Report
      2019 Annual Research Report
    • Invited
  • [Presentation] 超臨界二酸化炭素/水界面におけるTPPS会合体生成挙動に及ぼす界面活性剤構造の影響2018

    • Author(s)
      大橋 朗 ・ 遠藤 真輝 ・ 山岸 康平 ・ 鈴木 智明 ・ 金 幸夫
    • Organizer
      日本分析化学会第67年会
    • Related Report
      2018 Research-status Report
  • [Presentation] 第三級アミンを有する8-キノリノールビス体を用いたイオン液体抽出による金属イオンの分離2018

    • Author(s)
      齋藤壮,黒田智,大橋朗,金幸夫
    • Organizer
      第36回溶媒抽出討論会
    • Related Report
      2018 Research-status Report
  • [Presentation] Measurement of the Aggregates of Anionic Porphyrin with Cationic Surfactants at The Supercritical Carbon Dioxide/Water Interface by total Internal Reflection Spectroscopy2017

    • Author(s)
      A. Ohashi, M. Endo, K. Yamagishi, H.-B. Kim
    • Organizer
      The 21th International Solvent Extraction Conference (ISEC2017)
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research

URL: 

Published: 2017-04-28   Modified: 2021-02-19  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi