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Construction of a proton conductor that exhibits high photoswitching properties due to the synergistic effect of photoresponsive sites

Research Project

Project/Area Number 22K20555
Research Category

Grant-in-Aid for Research Activity Start-up

Allocation TypeMulti-year Fund
Review Section 0502:Inorganic/coordination chemistry, analytical chemistry, inorganic materials chemistry, energy-related chemistry, and related fields
Research InstitutionJapan Advanced Institute of Science and Technology

Principal Investigator

Aoki Kentaro  北陸先端科学技術大学院大学, 先端科学技術研究科, 助教 (00963810)

Project Period (FY) 2022-08-31 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Fiscal Year 2023: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2022: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Keywordsプロトン伝導 / 光機能性材料 / スイッチ / 異性化 / 協奏効果 / 光誘起イオン伝導度スイッチング / 水素結合 / 固体イオニクス / 単結晶X線回折測定 / 活性化エネルギー / 結晶構造 / プロトン / イオン伝導体 / 伝導度スイッチング / 外場応答 / 光異性化 / 金属錯体 / 光応答 / スイッチング
Outline of Research at the Start

本研究では複数の光応答性部位を導入した金属錯体を設計・開発し、光応答能を相乗的に作用させることで可逆かつ高い光誘起イオン伝導度スイッチングを達成する。開発した錯体の光照射前後のスイッチング能の検討に加えて、光応答性部位の選択的な異性化反応を用いた対照実験や光照射下のオペランド測定、理論計算などの多角的な検討を通してスイッチング機構を解明することで、光誘起イオンスイッチング材料の設計指針を確立する。

Outline of Final Research Achievements

We constructed a novel metal complex using a ligand with multiple photoresponsive untis, inducing structural isomerization and pKa change. By examining the proton conductivity before and after light irradiation, we found that simultaneous isomerization of the two photoresponsive sites exhibited a high reversible on-off ratio reaching 10^5. This significantly exceeded the on-off ratio of ion conductivity when only one of the photoresponsive sites was isomerized, indicating that the photoresponsive sites were acting cooperatively.

Academic Significance and Societal Importance of the Research Achievements

本研究では「複合化した光応答性部位の協奏効果」というコンセプトの下、合目的的に配位子・錯体を設計することでオン・オフ比10^5に至る電子スイッチングに匹敵する高いプロトン伝導度スイッチングを達成した点で意義深い。また、これらの知見は光駆動型イオンポンプなどの生態系やイオン伝導度の変調が電子伝導度に影響するイオントロニクスなど、分野横断的な波及効果も大きく、将来的にはイオンを媒体とした素子・回路開発への貢献も期待される。

Report

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

    (27 results)

All 2024 2023 2022 Other

All Int'l Joint Research (2 results) Journal Article (7 results) (of which Int'l Joint Research: 5 results,  Peer Reviewed: 6 results) Presentation (18 results) (of which Int'l Joint Research: 3 results,  Invited: 1 results)

  • [Int'l Joint Research] Shahjalal University of Sci. and Tech.(バングラデシュ)

    • Related Report
      2023 Annual Research Report
  • [Int'l Joint Research] University of Technology Malaysia(マレーシア)

    • Related Report
      2023 Annual Research Report
  • [Journal Article] Influence of Humidity on Layer-by-Layer Growth and Structure in Coordination Networks2024

    • Author(s)
      Aoki Kentaro、Matsuzawa Toshitaka、Suetsugu Kota、Hara Mitsuo、Nagano Shusaku、Nagao Yuki
    • Journal Title

      Inorganic Chemistry

      Volume: 15 Issue: 15 Pages: 6674-6682

    • DOI

      10.1021/acs.inorgchem.3c04526

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] n-n heterojunction CdS/FST photoanode for enhanced photoelectrochemical water splitting2024

    • Author(s)
      Sawal M.H.、Jalil A.A.、Abdullah T.A.T.、Hassan N.S.、Bahari M.B.、Izzudin N.M.、Jusoh N.W.C.、Nagao Y.、Aoki Kentaro、Chong M.N.、Rajendran Saravanan
    • Journal Title

      International Journal of Hydrogen Energy

      Volume: - Pages: 336-343

    • DOI

      10.1016/j.ijhydene.2024.03.215

    • Related Report
      2023 Annual Research Report
  • [Journal Article] Electrochemical Reduction of CO2 by the SnS| PTFE| Pt Surface in an Aqueous Imidazole Medium: Catalysis and Kinetics2024

    • Author(s)
      Islam Md. Tarikul、Hossain Mohammad Imran、Aoki Kentaro、Nagao Yuki、Hasan Md. Mahmudul、Rahaman Mostafizur、Aldalbahi Ali、Hasnat Mohammad A.
    • Journal Title

      ACS Applied Energy Materials

      Volume: - Issue: 8 Pages: 3125-3136

    • DOI

      10.1021/acsaem.3c03142

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] IrOx-Pt electrode for the electro-oxidation of ethanol in alkaline-type direct ethanol fuel cells: an excellent CO-tolerant catalyst2023

    • Author(s)
      Islam Md. Fahamidul、Ahmed Jahir、Faisal M.、Algethami Jari S、Aoki Kentaro、Nagao Yuki、Harraz Farid A.、Hasnat Mohammad A.
    • Journal Title

      New Journal of Chemistry

      Volume: 47 Issue: 41 Pages: 18933-18944

    • DOI

      10.1039/d3nj03306f

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Development of CuNi immobilized Pt surface to minimize nitrite evolution during electrocatalytic nitrate reduction in neutral medium2023

    • Author(s)
      Nurnobi Islam Md.、Ahsan Mohebul、Aoki Kentaro、Nagao Yuki、Alsafrani Amjad E.、Marwani Hadi M.、Almahri Albandary、Rahman Mohammed M.、Hasnat Mohammad A.
    • Journal Title

      Journal of Environmental Chemical Engineering

      Volume: 11 Issue: 6 Pages: 111149-111149

    • DOI

      10.1016/j.jece.2023.111149

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Kinetics of Electrocatalytic Oxidation of Gallic Acid by Activated Glassy Carbon Electrode in Acidic Medium2023

    • Author(s)
      Siddika Munira、Ahmed Jahir、Aoki Kentaro、Faisal M.、Algethami Jari S.、Harraz Farid A.、Nagao Yuki、Hasnat Mohammad A.
    • Journal Title

      ChemistrySelect

      Volume: 8 Issue: 38

    • DOI

      10.1002/slct.202302074

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Efficient Electrocatalytic Hydrogen Evolution Reaction on CuO Immobilized Stainless‐Steel Electrode Prepared by the SILAR Method2023

    • Author(s)
      Islam Md. Nurnobi、Ahmed Jahir、Faisal Mohd、Algethami Jari S、Aoki Kentaro、Nagao Yuki、Harraz Farid A.、Hasnat Mohammad A.
    • Journal Title

      ChemistrySelect

      Volume: 8 Issue: 28

    • DOI

      10.1002/slct.202301077

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Presentation] 光照射による多段階かつ高いプロトン伝導度スイッチング材料の構築2024

    • Author(s)
      青木健太郎, 長尾祐樹
    • Organizer
      第71回応用物理学会 春季学術講演会
    • Related Report
      2023 Annual Research Report
  • [Presentation] スルホン化ポリイミドのリチウムイオン伝導性と界面構造2024

    • Author(s)
      長尾祐樹, 青木健太郎, Athchaya Suwansoontorn, 原光生, 生田聖也, 宮﨑司, 宮田登, 青木裕之, Attila Taborosi, 古山通久,永野修作,山本勝宏
    • Organizer
      第71回応用物理学会 春季学術講演会
    • Related Report
      2023 Annual Research Report
  • [Presentation] Construction of a light-induced multi-step ion conductivity switching material and elucidation of its mechanism2024

    • Author(s)
      Kentaro Aoki, Yuki Nagao
    • Organizer
      日本化学会第104春季年会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 中性子反射率法を用いたスルホン化ポリイミド薄膜の界面構造2024

    • Author(s)
      長尾祐樹, 青木健太郎, 生田聖也, 宮﨑司, 宮田登, 青木裕之, AttilaTaborosi, 古山通久, 永野修作, 山本勝宏
    • Organizer
      日本化学会第104春季年会
    • Related Report
      2023 Annual Research Report
  • [Presentation] ナフタレンテトラカルボン酸無水物の位置異性体を用いたリチウムイオン伝導性スルホン化ポリイミドの合成と物性2024

    • Author(s)
      山口祐樹 , 青木健太郎 , 生田聖也 , 是津信行 , 長尾祐樹
    • Organizer
      日本化学会第104春季年会
    • Related Report
      2023 Annual Research Report
  • [Presentation] ナフタレンテトラカルボン酸無水物の位置異性体を用いたスルホン化ポリイミドの合成2023

    • Author(s)
      山口祐樹, 青木健太郎, 生田聖也, 長尾祐樹
    • Organizer
      2023年度 北陸地区講演会と研究発表会
    • Related Report
      2023 Annual Research Report
  • [Presentation] リチウム伝導性脂環式スルホン化ポリイミドの合成と物性2023

    • Author(s)
      Yunhe Tian, 青木健太郎, 生田聖也, 長尾祐樹
    • Organizer
      2023年度 北陸地区講演会と研究発表会
    • Related Report
      2023 Annual Research Report
  • [Presentation] リチウム型リオトロピック液晶性高分子電解質の合成およびハイパワー型リチウムイオン正極への応用2023

    • Author(s)
      生田聖也, 青木健太郎, 原光生, Marium Mayeesha, 是津信, 長尾祐樹
    • Organizer
      第72回高分子討論会
    • Related Report
      2023 Annual Research Report
  • [Presentation] Construction of a light-induced high proton conduction switching material and its mechanism2023

    • Author(s)
      Kentaro Aoki, Yuki Nagao
    • Organizer
      錯体化学会 第73回討論会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 光応答性部位の協奏効果による高いプロトン伝導度スイッチング体の構築2023

    • Author(s)
      青木健太郎, 長尾祐樹
    • Organizer
      第17回分子科学討論会2023
    • Related Report
      2023 Annual Research Report
  • [Presentation] 光応答性部位の協奏効果に起因した高いプロトン伝導度スイッチング体の構築と機構の解明2023

    • Author(s)
      青木健太郎, 長尾祐樹
    • Organizer
      2023年光化学討論会
    • Related Report
      2023 Annual Research Report
  • [Presentation] Evaluation of the environment of water molecules in lyotropic liquid crystalline polymer electrolytes2023

    • Author(s)
      Yuya Inukai, Yutaro Ono, Kentaro Aoki, Yuki Nagao
    • Organizer
      13th SPSJ International Polymer Conference (IPC2023)
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Protonic field-effect transistor with electrochemical impedance spectroscopy reveals proton transport mobility in thin film2023

    • Author(s)
      Athchaya Suwansoontorn, Kentaro Aoki, Jun Matsui, Yuki Nagao
    • Organizer
      13th SPSJ International Polymer Conference (IPC2023)
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Evaluation of the environment of water molecules in lyotropic liquid crystalline polymer electrolytes2023

    • Author(s)
      Yuya Inukai, Yutaro Ono, Kentaro Aoki, Yuki Nagao
    • Organizer
      13th International Congress on Membranes and Membrane Processes (ICOM2023)
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 電界効果を利用した電解質薄膜の移動度2023

    • Author(s)
      長尾祐樹, Athchaya Suwansoontorn, 青木健太郎, 松井淳
    • Organizer
      第72回高分子学会年次大会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 光応答性部位の協奏による 高いイオン伝導度スイッチング材料の開発2023

    • Author(s)
      青木健太郎 長尾祐樹
    • Organizer
      第70回応用物理学会春季学術講演会
    • Related Report
      2022 Research-status Report
  • [Presentation] Investigation of Proton Conductivity Switching Using Metal Complex with Multi Light-responsive Units2023

    • Author(s)
      Kentaro Aoki and Yuki Nagao
    • Organizer
      The 103rd CSJ annual meeting (2023)
    • Related Report
      2022 Research-status Report
  • [Presentation] 光応答性部位の協奏に起因した 高いイオン伝導度スイッチング材料の開発2022

    • Author(s)
      青木健太郎
    • Organizer
      JAIST 物質化学フロンティアシンポジウム2022
    • Related Report
      2022 Research-status Report
    • Invited

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Published: 2022-09-01   Modified: 2025-01-30  

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