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Research Project

Project/Area Number 21H02018
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 35030:Organic functional materials-related
Research InstitutionWaseda University

Principal Investigator

NISHIDE Hiroyuki  早稲田大学, 理工学術院, 名誉教授 (90120930)

Co-Investigator(Kenkyū-buntansha) 須賀 健雄  早稲田大学, 理工学術院, 准教授 (10409659)
篠原 浩美  早稲田大学, 理工学術院総合研究所(理工学研究所), 次席研究員(研究院講師) (70339703)
Project Period (FY) 2021-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥12,610,000 (Direct Cost: ¥9,700,000、Indirect Cost: ¥2,910,000)
Fiscal Year 2023: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Fiscal Year 2022: ¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
Fiscal Year 2021: ¥5,460,000 (Direct Cost: ¥4,200,000、Indirect Cost: ¥1,260,000)
Keywords有機機能材料 / レドックス反応 / ホール輸送高分子 / 光触媒 / 水分解
Outline of Research at the Start

ポリチオフェンおよびポリアリールアミン誘導体などの薄層フィルムが、固有なホール輸送能の他に、水分子の還元/酸化反応の触媒能を兼ね備え、光照射下での水分解(水素/酸素発生)に作動することを実証する。電荷分離輸送/界面での水分子への電荷注入の化学を有機高分子薄層を対象に問い掛け、有機高分子材料の湿式・光触媒として潜在性を明らかにする。環境適合・次世代エネルギー源としての水素・過酸化水素のon site製造法に繋がる実験でもある。

Outline of Final Research Achievements

Photo-electrocatalytic capability of purely organic-based, conjugated polymers was presented using the films of polythiophenes for water-oxidation and -reduction, from the perspectives of hole- or electron-injection reactions at the polymer/water interface. The polythiophene film was formed upon a current collecting substrate including a transparent plastic substrate, which facilitated the water oxidation to evolve oxygen. The water oxidation was significantly enhanced under visible light-illumination based on the hole generated on HOMO level. In addition, the reduction reaction with illumination in alkaline water efficiently produced hydrogen peroxide, even without any bias voltage application. The redox function of organic polymers immersed in water was discussed for their use in sustainable energy-related devices.

Academic Significance and Societal Importance of the Research Achievements

光触媒による水分解は従来、n型無機半導体での開発が主流であるが、光吸収・電荷分離能高いp型ホール輸送有機共役高分子に初めて着目する。研究盛んな精密共役高分子に対し、単純単一の共役高分子薄膜を対象に、水界面の電子(ホール)授受を解析し、純有機高分子への可視光照射による水分子の酸化/還元(酸素/水素発生)という未知の化学機能を引き出す。膜への照射で純酸素(別室で純水素)を発生でき、水酸化還元電位に適したエネルギー準位や反応界面の設計も容易である。太陽光下での水から過酸化水素水の簡易製造などにも波及した。この水分解・湿式デバイスで得た新知見は、汎用乾式デバイスでも示唆多く、空気二次電池等にも繋がる。

Report

(4 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Annual Research Report
  • 2021 Annual Research Report
  • Research Products

    (12 results)

All 2024 2023 2022 2021 Other

All Int'l Joint Research (1 results) Journal Article (7 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 7 results,  Open Access: 5 results) Presentation (4 results) (of which Int'l Joint Research: 1 results)

  • [Int'l Joint Research] Monash University(オーストラリア)

    • Related Report
      2021 Annual Research Report
  • [Journal Article] Molecularly doped polythiophene film as an efficient photocathode for oxygen reduction to hydrogen peroxide2024

    • Author(s)
      Shinohara Hiromi、Nishide Hiroyuki
    • Journal Title

      MRS Communications

      Volume: - Issue: 3 Pages: 281-286

    • DOI

      10.1557/s43579-024-00523-w

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Poly(3-hexylthiophene) Film Coated on Plastic Substrate as an Organic Photoanode for Water Oxidation / Oxygen Evolution with Light Illumination2024

    • Author(s)
      Shinohara Hiromi、Nishide Hiroyuki
    • Journal Title

      Polymers for Advanced Technologies

      Volume: submitted

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Combination of Poly(3-butylthiophene) Hole-Transporting Layer and Butylammonium Interface Passivation to Improve an Inorganic Perovskite Solar Cell2023

    • Author(s)
      Kojima Megumi、Xue Lyufei、Oyaizu Kenichi、Nishide Hiroyuki、Suga Takeo
    • Journal Title

      ACS Applied Polymer Materials

      Volume: 5 Issue: 6 Pages: 4100-4105

    • DOI

      10.1021/acsapm.3c00317

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Organic redox polymers as electrochemical energy materials2022

    • Author(s)
      Nishide H.
    • Journal Title

      Green Chemistry

      Volume: 24 Issue: 12 Pages: 4650-4679

    • DOI

      10.1039/d2gc00981a

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Polymer Complexes for Electrocatalytic Oxygen Evolution2022

    • Author(s)
      Shinohara H., Nishide H.
    • Journal Title

      Bulletin of the Karaganda University. "Chemistry" series

      Volume: 107 Issue: 3 Pages: 67-74

    • DOI

      10.31489/2022ch3/3-22-16

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Two States of Water Converge to One State below 215 K2021

    • Author(s)
      Oka Kouki、Shibue Toshimichi、Sugimura Natsuhiko、Watabe Yuki、Tanaka Midori、Winther-Jensen Bjorn、Nishide Hiroyuki
    • Journal Title

      The Journal of Physical Chemistry Letters

      Volume: 12 Issue: 24 Pages: 5802-5806

    • DOI

      10.1021/acs.jpclett.1c01132

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Poly(3‐alkylthiophene) Films as Solvent‐Processable Photoelectrocatalysts for Efficient Oxygen Reduction to Hydrogen Peroxide2021

    • Author(s)
      Oka Kouki、Kamimori Koichiro、Winther-Jensen Bjorn、Nishide Hiroyuki
    • Journal Title

      Advanced Energy and Sustainability Research

      Volume: 2 Issue: 12 Pages: 2100103-2100103

    • DOI

      10.1002/aesr.202100103

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] 分子ドープしたポリ(3-ヘキシルチオフェン)を光アノードとする水の酸化2023

    • Author(s)
      篠原浩美、西出宏之
    • Organizer
      第72回高分子学会年次大会
    • Related Report
      2023 Annual Research Report
  • [Presentation] Molecularly Doped Poly(3-hexylthiophene) Layers for Efficient Photoelectrocatalytic Oxygen Reduction and Water Oxidation2023

    • Author(s)
      Shinohara Hiromi、Nishide Hiroyuki
    • Organizer
      The 13th SPSJ International Polymer Conference
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] ポリチオフェンを光アノードとする 水の酸化 / 酸素発生2023

    • Author(s)
      篠原浩美、西出宏之
    • Organizer
      第72回高分子討論会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 親水高分子層に担持したポリチオフェンの水酸化触媒能2022

    • Author(s)
      篠原 浩美、西出 宏之
    • Organizer
      第71回高分子討論会(北海道大学)
    • Related Report
      2022 Annual Research Report

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Published: 2021-04-28   Modified: 2025-01-30  

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