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Ultrasensitive chirality detection: Heterodyne-detected chiral electronic sum frequency generation

Research Project

Project/Area Number 19K22159
Research Category

Grant-in-Aid for Challenging Research (Exploratory)

Allocation TypeMulti-year Fund
Review Section Medium-sized Section 32:Physical chemistry, functional solid state chemistry, and related fields
Research InstitutionThe University of Tokyo

Principal Investigator

Okuno Masanari  東京大学, 大学院総合文化研究科, 准教授 (00719065)

Project Period (FY) 2019-06-28 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥6,370,000 (Direct Cost: ¥4,900,000、Indirect Cost: ¥1,470,000)
Fiscal Year 2020: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2019: ¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
Keywords非線形分光 / キラリティー / 振動分光 / 電子状態 / 界面・表面
Outline of Research at the Start

キラリティーは分子や物質の持つ最も根源的な性質のひとつである。近年、分子や金属を用いたキラル物質変換やキラル物性の研究が盛んにおこなわれているが、キラリティーの高感度な分析手法がないことが、研究のボトル・ネックになっている。本研究では、非線形光学過程の一種である和周波発生を用い、大きな信号が期待される電子状態を対象とすることで、キラリティーに関する研究を促進する、超高感度な計測手法を開発する。

Outline of Final Research Achievements

The aim of this study was to develop electronic sum frequency generation spectroscopy using ultrabroadbad light source. Firstly, we performed the generation of supercontinuum light by using a picosecond laser. By introducing picosecond light whose intensity and polarization were properly controlled, we successfully obtained supercontinuum ranging from the visible to near infrared region. Prior to application to chiral sum frequency generation, we employed this supercontinuum light to generate sum frequency signals from a quartz crystal. The obtained signals were large enough to investigate the spectral- and time-profile of the supercontinuum.

Academic Significance and Societal Importance of the Research Achievements

高出力のピコ秒レーザーとラージモードエリアフォトニック結晶ファイバーを用いた超広帯域光発生に成功し、CARS等の非線形分光への応用に成功した。一方、本研究ではヘテロダイン検出キラルESFG信号を得ることはできなかった。可視域での超広帯域光発生を高効率で行うことができれば、本研究での目的としたヘテロダイン検出キラルESFG信号を実現することができると考えられる。

Report

(3 results)
  • 2020 Annual Research Report   Final Research Report ( PDF )
  • 2019 Research-status Report
  • Research Products

    (7 results)

All 2021 2020 2019

All Journal Article (4 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 4 results,  Open Access: 1 results) Presentation (2 results) (of which Invited: 2 results) Book (1 results)

  • [Journal Article] Hyper‐Raman spectroscopy of alcohols excited at 532 nm: Methanol, ethanol, 1‐propanol, and 2‐propanol2021

    • Author(s)
      Okuno Masanari
    • Journal Title

      Journal of Raman Spectroscopy

      Volume: 52 Issue: 4 Pages: 849-856

    • DOI

      10.1002/jrs.6066

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Hyper-Raman spectroscopy of polar liquids excited at 1064 nm: Acetone, acetonitrile, chloroform, and dimethyl sulfoxide2020

    • Author(s)
      Okuno Masanari
    • Journal Title

      The Journal of Chemical Physics

      Volume: 152 Issue: 17 Pages: 174202-174202

    • DOI

      10.1063/5.0004755

    • Related Report
      2020 Annual Research Report 2019 Research-status Report
    • Peer Reviewed
  • [Journal Article] Vibrational couplings and energy transfer pathways of water’s bending mode2020

    • Author(s)
      Yu Chun-Chieh、Chiang Kuo-Yang、Okuno Masanari、Seki Takakazu、Ohto Tatsuhiko、Yu Xiaoqing、Korepanov Vitaly、Hamaguchi Hiro-o、Bonn Mischa、Hunger Johannes、Nagata Yuki
    • Journal Title

      Nature Communications

      Volume: 11 Issue: 1 Pages: 5977-5977

    • DOI

      10.1038/s41467-020-19759-w

    • NAID

      120006952194

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Molecular orientations and conformations of air/fluoroalkyl acrylate polymer interfaces studied by heterodyne-detected vibrational sum frequency generation2019

    • Author(s)
      Masanari Okuno, Osamu Homma, An-Tsung Kuo, Shingo Urata, Ryohei Koguchi, Tatsuya Miyajima, and Taka-aki Ishibashi*
    • Journal Title

      Macromolecules

      Volume: 22 Issue: 22 Pages: 8705-8712

    • DOI

      10.1021/acs.macromol.9b00541

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Presentation] 非線形分光法の可能性への挑戦2020

    • Author(s)
      奥野将成
    • Organizer
      日本分光学会年次講演会
    • Related Report
      2020 Annual Research Report
    • Invited
  • [Presentation] 二次非線形光学過程に基づく界面とキラリティーの分子分光2019

    • Author(s)
      奥野将成
    • Organizer
      第9回光科学異分野横断萌芽研究会
    • Related Report
      2019 Research-status Report
    • Invited
  • [Book] Molecular and Laser Spectroscopy 1st Edition Advances and Applications: Volume 22020

    • Author(s)
      Ishibashi Taka-aki、Okuno Masanari
    • Total Pages
      34
    • Publisher
      ELSEVIER
    • Related Report
      2020 Annual Research Report

URL: 

Published: 2019-07-04   Modified: 2022-01-27  

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