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Development of Benzopyran-Based Caged Compounds with Near-Infrared Two-Photon Absorption Character and Their Application in Physiological Experiments

Research Project

Project/Area Number 22K14785
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 37010:Bio-related chemistry
Research InstitutionKyushu University

Principal Investigator

Chitose Youhei  九州大学, 工学研究院, 助教 (60911534)

Project Period (FY) 2022-04-01 – 2025-03-31
Project Status Completed (Fiscal Year 2024)
Budget Amount *help
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2024: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2023: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2022: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Keywords近赤外2光子吸収 / ベンゾピラン / 光解離性保護基 / ケージド化合物 / 近赤外2光子吸収 / クマリン / D-π-D / チオクマリン / 2光子吸収 / ベンゾピラン骨格 / 活性物質 / 2光子吸収能 / 光励起状態
Outline of Research at the Start

本研究では,理論計算を用いることで高い近赤外2光子吸収能を有する光解離性保護基を設計し,実際に合成を行う.はじめに合成した光解離性保護基の有機溶媒中における光脱保護効率の確認を行う.光反応量子収率や光反応により生成する脱離基の収率を評価したのち,保護基部位に十分な水溶性を有する置換基を導入することで細胞実験への応用を試みる.生物活性物質として,グルタミン酸や抗がん剤などを保護したケージド化合物を合成し,生体内において,近赤外光を照射することで,活性物質の濃度上昇を時空間的に制御し,これまで未解明であった活性物質の活性発現機構の解明に貢献する.

Outline of Final Research Achievements

This study aimed to develop organic dyes exhibiting high two-photon absorption cross sections in the near-infrared region (680-1050 nm). Theoretical calculations suggested that the designed benzopyran derivatives would show a red-shifted two-photon absorption maximum around 720 nm. To date, the synthesis of thiocoumarin, a key precursor of the benzopyran derivatives, has been successfully achieved. However, subsequent introduction of the electron-donating methylene unit has not yet been realized. The primary reason for the reaction failure is due to the instability of the methylene unit. Although the research objective was not fully accomplished, the insights gained here are expected to serve as a valuable findings for the future material design and synthesis of two-photon-responsive caged compounds.

Academic Significance and Societal Importance of the Research Achievements

本研究で設計したD-π-D構造を有するベンゾピラン誘導体は,理論計算の結果から,2光子最大吸収波長が720 nm付近に位置すると予測されている.このような2光子吸収特性を示す有機色素は,近年注目されている2光子蛍光顕微鏡法や光による薬剤の精密デリバリー(光ドラッグデリバリー)など,生体深部への非侵襲的かつ高空間分解能な操作に応用可能である。特に,近赤外光は生体組織に対する透過性が高く,光損傷が少ないという特性を持つことから,本研究で開発を目指したような近赤外2光子応答性ケージド化合物は,将来的に神経科学やがん治療などの分野に革新をもたらす分子ツールとして大きな社会的意義を有すると考えられる.

Report

(4 results)
  • 2024 Annual Research Report   Final Research Report ( PDF )
  • 2023 Research-status Report
  • 2022 Research-status Report
  • Research Products

    (12 results)

All 2025 2024 2023 Other

All Int'l Joint Research (1 results) Journal Article (4 results) (of which Int'l Joint Research: 3 results,  Peer Reviewed: 3 results,  Open Access: 1 results) Presentation (6 results) (of which Int'l Joint Research: 1 results) Patent(Industrial Property Rights) (1 results)

  • [Int'l Joint Research] National Taipei University of Technology(その他の国・地域 台湾)

    • Related Report
      2024 Annual Research Report
  • [Journal Article] Unlocking Dual Functionality in Triazine-Based Emitters: Synergistic Enhancement of Two-Photon Absorption and TADF-OLED Performance with Electron-Withdrawing Substituents2025

    • Author(s)
      Youhei Chitose, Gomathi Vinayakam Mageswari, Ryota Zenke, Toshiharu Ide, Shintaro Kohata, Ja-Hon Lin, Youichi Tsuchiya, Chihaya Adachi
    • Journal Title

      chemrxiv

      Volume: -

    • DOI

      10.26434/chemrxiv-2025-8t4c7

    • Related Report
      2024 Annual Research Report
    • Int'l Joint Research
  • [Journal Article] Optochemical control of slow-wave sleep in the nucleus accumbens of male mice by a photoactivatable allosteric modulator of adenosine A2A receptors2024

    • Author(s)
      Roy Koustav、Zhou Xuzhao、..., Wang Yi-Qun、Saitoh Tsuyoshi、Lazarus Michael
    • Journal Title

      Nature Communications

      Volume: 15 Issue: 1 Pages: 3661-3661

    • DOI

      10.1038/s41467-024-47964-4

    • Related Report
      2024 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Rational Molecular Design for Balanced Locally Excited and Charge‐ Transfer Nature for Two‐Photon Absorption Phenomenon and Highly Efficient TADF‐Based OLEDs2024

    • Author(s)
      Gomathi Vinayakam Mageswari, Youhei Chitose, Youichi Tsuchiya, Ja-Hon Lin, Chihaya Adachi
    • Journal Title

      Angew. Chem. Int. Ed.

      Volume: 64 Issue: 8

    • DOI

      10.1002/anie.202420417

    • Related Report
      2024 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Co-trimerization of benzonitriles with guanidine hydrochloride: synthesis of 2-bromo-4,6-diaryl-1,3,5-triazine derivatives bearing electron-withdrawing groups2023

    • Author(s)
      Youhei Chitose, Yuika Tamura, Youichi Tsuchiya, Chihaya Adachi
    • Journal Title

      Chemistry Letters

      Volume: 53 Issue: 4

    • DOI

      10.1093/chemle/upae059

    • Related Report
      2023 Research-status Report
    • Peer Reviewed
  • [Presentation] Rational molecular design strategy to obtain locally excited and charge transfer characters aimed for dual enhancement of two-photon absorption cross-section and TADF activity2025

    • Author(s)
      Gomathi Vinayakam Mageswari, Youhei Chitose, Ja-Hon Lin, Youichi Tsuchiya, Chihaya Adachi
    • Organizer
      2025年 第72回応用物理学会春季学術講演会
    • Related Report
      2024 Annual Research Report
  • [Presentation] Rational Molecular Design for Balanced Locally Excited and Charge-Transfer Nature for Two-Photon Absorption Phenomenon and Highly Efficient TADF-Based OLEDs2025

    • Author(s)
      Youhei Chitose, Gomathi Vinayakam Mageswari, Chihaya Adachi
    • Organizer
      有機エレクトロニクス研究会(OME)
    • Related Report
      2024 Annual Research Report
  • [Presentation] 2光子吸収および TADF 特性を両立させるトリアジン誘導体の光物性2024

    • Author(s)
      善家 良太, 千歳 洋平, 安逹 千波矢
    • Organizer
      2024年光化学討論会
    • Related Report
      2024 Annual Research Report
  • [Presentation] Rational molecular design strategy aimed at the compatibility of two-photon absorption phenomenon and TADF-based OLED application with planar triazine derivatives2024

    • Author(s)
      Youhei Chitose, Youichi Tsuchiya, Chihaya Adachi
    • Organizer
      A-COE 2024 The 16th Asian Conference on Organic Electronics The 16th Asian Conference on Organic Electronics
    • Related Report
      2024 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Development of Triazine-Based TADF Emitter with Near-Infrared Two-Photon Absorption Character2023

    • Author(s)
      Youhei CHITOSE, Youichi TSUCHIYA, Chihaya ADACHI
    • Organizer
      2023年光化学討論会
    • Related Report
      2023 Research-status Report
  • [Presentation] Development of Triazine Derivatives Bearing Electron-Withdrawing Substituent and Their Application to TADF Emitter with Near-Infrared Two-Photon Absorption Character2023

    • Author(s)
      Youhei Chitose, Youichi Tsuchiya, Chihaya Adachi
    • Organizer
      日本化学会 第104春季年会(2024)
    • Related Report
      2023 Research-status Report
  • [Patent(Industrial Property Rights)] 化合物、発光材料、二光子吸収材料、活性酸素生成材料および有機発光素子2023

    • Inventor(s)
      千歳 洋平、土`屋 陽一、田村 結花、安達 千波矢
    • Industrial Property Rights Holder
      千歳 洋平、土`屋 陽一、田村 結花、安達 千波矢
    • Industrial Property Rights Type
      特許
    • Industrial Property Number
      2023-011275
    • Filing Date
      2023
    • Related Report
      2023 Research-status Report

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Published: 2022-04-19   Modified: 2026-01-16  

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