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Synthesis of functional composite thin films using a reaction field at a plasma/liquid interface

Research Project

Project/Area Number 19H01888
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 14030:Applied plasma science-related
Research InstitutionOsaka Metropolitan University (2022)
Osaka City University (2019-2021)

Principal Investigator

Shirafuji Tatsuru  大阪公立大学, 大学院工学研究科, 教授 (10235757)

Co-Investigator(Kenkyū-buntansha) 呉 準席  大阪公立大学, 大学院工学研究科, 教授 (90533779)
Project Period (FY) 2019-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥17,550,000 (Direct Cost: ¥13,500,000、Indirect Cost: ¥4,050,000)
Fiscal Year 2022: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Fiscal Year 2021: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Fiscal Year 2020: ¥6,110,000 (Direct Cost: ¥4,700,000、Indirect Cost: ¥1,410,000)
Fiscal Year 2019: ¥7,280,000 (Direct Cost: ¥5,600,000、Indirect Cost: ¥1,680,000)
Keywordsプラズマ / 気液界面 / 重合 / ポリエチレンジオキシチオフェン / ポリスチレンスルホン酸 / 低分子量化 / 多糖類 / 液体 / 界面 / 材料プロセス / 薄膜 / マイクロコンタクター / 機能性複合材料薄膜
Outline of Research at the Start

近年,液体が関与するプラズマプロセスが材料・医療・農業・環境分野で注目されている.しかし,その多くはプラズマの効果がダイレクトに及ばない液体中の反応を利用している.これに対し本研究では,他では代替不可能なプラズマからの直接的効果が及ぶ界面反応場の存在が顕在化したプロセスとして,これまでに報告例のないプラズマ/液界面での機能性薄膜形成という新奇プロセスを提案する.申請者は準備研究によってその可能性を見出した.本研究では,このプロセスにおける膜厚制御因子や複合材料化のメカニズムを見出し,プラズマと液体が接することによってのみ実現可能な革新的プロセスの基盤を確立する.

Outline of Final Research Achievements

Polyethylenedioxythiophene (PEDOT), a conductive polymer used in flexible electronic devices, is generally formed by oxidative polymerization of a monomer, ethylenedioxythiophene (EDOT). It takes several tens of hours if we employ conventional oxidative polymerization. In this study, we succeeded in forming a PEDOT-like polymer from EDOT in a few minutes by using the plasma-liquid interfacial processes. We tried the addition of polystyrene sulfonic acid (PSS) as a dopant and clarified that the solidification was significantly higher than that without addition. The conductivity of the obtained solid material was several mS/cm. We also found that plasma-liquid interfacial processes can be applied to the production of low-molecular-weight polysaccharides and proteins which are used for supplements and/or medicine.

Academic Significance and Societal Importance of the Research Achievements

従来のプラズマ重合においても,液体を原料とした手法が知られている.しかし,液体を気化する必要があった.本研究では,プラズマ液界面反応場を利用することで,液体からダイレクトに固体が形成されることを実証した.この学術的意義は,従来技術の延長上にない新しい薄膜形成の可能性を見出したことにある.社会的意義は,フレキシブルデバイス製造に必要な導電性高分子を従来よりも短時間で製造できる可能性を示したことにある.さらに,このプラズマ液界面反応場の利用によって,機能性食材や創薬への応用が期待される多糖類やタンパク質の低分子量化の可能性を見出したことにも学術的・社会的意義がある.

Report

(5 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Annual Research Report
  • 2020 Annual Research Report
  • 2019 Annual Research Report
  • Research Products

    (37 results)

All 2023 2022 2021 2020 2019 Other

All Journal Article (4 results) (of which Peer Reviewed: 4 results,  Open Access: 2 results) Presentation (26 results) (of which Int'l Joint Research: 11 results,  Invited: 3 results) Remarks (5 results) Patent(Industrial Property Rights) (2 results)

  • [Journal Article] 液相と接するプラズマを用いた材料合成~プラズマ/液界面の有効活用に向けて~2021

    • Author(s)
      白藤 立
    • Journal Title

      材料の科学と工学

      Volume: 58 Pages: 168-171

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] He ガスのDBD プラズマを用いた気液界面プロセスによるEDOT の重合2020

    • Author(s)
      白藤 立,平野 舜太,呉 準席
    • Journal Title

      静電気学会誌

      Volume: 44 Pages: 259-260

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Reaction Kinetics of Active Species from an Atmospheric Pressure Plasma Jet Irradiated on the Flowing Water Surface — Effect of Gas-drag by the Sliding Water Surface —2019

    • Author(s)
      T. Shirafuji and J.-S. Oh
    • Journal Title

      Journal of Photopolymer Science and Technology

      Volume: 32 Issue: 3 Pages: 535-540

    • DOI

      10.2494/photopolymer.32.535

    • NAID

      130007744420

    • ISSN
      0914-9244, 1349-6336
    • Year and Date
      2019-06-24
    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Formation of Freestanding Thin Films on Liquid Surfaces: Printing on Liquid Surfaces2019

    • Author(s)
      白藤 立
    • Journal Title

      Journal of Printing Science and Technology

      Volume: 56 Issue: 4 Pages: 181-187

    • DOI

      10.11413/nig.56.181

    • NAID

      130007706713

    • ISSN
      0914-3319, 1882-4935
    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Presentation] Preparation of low-molecular-weight fucoidan using multi-nozzle linear DBD in contact with liquid2023

    • Author(s)
      Sayaka Yamamoto, Haruki Kato, Jun-Seok Oh, Tatsuru Shirafuji, Shiori Maezawa, Motoko Takaoka
    • Organizer
      15th International Symposium on Advanced Plasma Science and its Applications for Nitrides and Nanomaterials (ISPlasma2023), Gifu, Japan
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] On the possibility of a plasma-liquid interface process using a DBD-embedded gas-liquid micro-contactor2023

    • Author(s)
      Tatsuru Shirafuji and Jun-Seok Oh
    • Organizer
      15th International Symposium on Advanced Plasma Science and its Applications for Nitrides and Nanomaterials (ISPlasma2023), Gifu, Japan
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] プラズマ・液界面プロセスを用いた褐藻(オオウキモ)由来フコイダンのプラズマ解重合2023

    • Author(s)
      山本 紗哉加, 呉 準席, 白藤 立, 前澤 志織, 高岡 素子
    • Organizer
      第69回応用物理学会春季学術講演会,青山学院大学相模原キャンパス(オンライン併催)
    • Related Report
      2022 Annual Research Report
  • [Presentation] DBD埋め込みマイクロコンタクタによる液体処理2023

    • Author(s)
      白藤 立,加藤 晴輝,山本 紗哉加,呉 準席,高岡 素子
    • Organizer
      第70回応用物理学会春季学術講演会,上智大学四谷キャンパス,東京(オンライン併催)
    • Related Report
      2022 Annual Research Report
  • [Presentation] Rapid preparation of low-molecular-weight fucoidan using a plasma-liquid interface process2022

    • Author(s)
      Sayaka Yamamoto, Shiori Maezawa, Tatsuru Shirafuji, Motoko Takaoka, Jun-Seok Oh
    • Organizer
      2022 MRS Spring Meeting & Exhibit, Honolulu, U.S.A.(オンライン併催)
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Polymerization of EDOT on H2O by DBD treatment2022

    • Author(s)
      Tomohiro Okamoto, Tatsuru Shirafuji, Jun-Seok Oh
    • Organizer
      11th International Conference on Reactive Plasmas (ICRP-11), Sendai, Japan
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 気液界面プラズマによるアルギン酸ナトリウムの低分子量化に関する研究2022

    • Author(s)
      河野 隆大, 中谷 大樹, 呉 準席, 白藤 立
    • Organizer
      バイオメディカルフォーラム2022
    • Related Report
      2021 Annual Research Report
  • [Presentation] プラズマ・液界面プロセスを用いた褐藻(オオウキモ)由来フコイダンのプラズマ解重合2022

    • Author(s)
      山本 紗哉加, 呉 準席, 白藤 立, 前澤 志織, 高岡 素子
    • Organizer
      第69回応用物理学会春季学術講演会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 大気圧ArプラズマによるEDOT/PSS/SDS混合溶液からの重合物質合成2021

    • Author(s)
      岡本 智宏, 北川 慎太郎, 呉 準席, 白藤 立
    • Organizer
      第82回応用物理学会秋季学術講演会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 気液界面プラズマを用いたタンパク質の高速分解2021

    • Author(s)
      白藤 立,呉 準席,中谷 大樹,前澤 志織,高岡 素子
    • Organizer
      2021年日本表面真空学会学術講演会
    • Related Report
      2021 Annual Research Report
  • [Presentation] プラズマ・液界面プロセスを用いた褐藻(オオウキモ)由来フコイダンのプラズマ解重合2021

    • Author(s)
      山本 紗哉加,呉 準席,白藤 立,前澤 志織,高岡 素子
    • Organizer
      第39回プラズマプロセシング研究会/第34回プラズマ材料科学シンポジウム
    • Related Report
      2021 Annual Research Report
  • [Presentation] プラズマ・液界面プロセスで分解したウシ血清アルブミンのFTIR評価2021

    • Author(s)
      白藤 立,中谷 大樹,呉 準席,前澤 志織,高岡 素子
    • Organizer
      第39回プラズマプロセシング研究会/第34回プラズマ材料科学シンポジウム
    • Related Report
      2021 Annual Research Report
  • [Presentation] 気液界面反応場を用いた天然由来高分子のプラズマ解重合2021

    • Author(s)
      河野 隆大, 中谷 大樹, 呉 準席, 白藤 立
    • Organizer
      第38回プラズマプロセシング研究会/第33回プラズマ材料科学シンポジウム
    • Related Report
      2020 Annual Research Report
  • [Presentation] PEDOT formation from EDOT using DBD plasma of Ar and He gases2021

    • Author(s)
      S. Kitagawa, R. Konishi, J.-S. Oh, and T. Shirafuji
    • Organizer
      13th International Symposium on Advanced Plasma Science and its Applications for Nitrides and Nanomaterials / 14th International Conference on Plasma-Nano Technology & Science
    • Related Report
      2020 Annual Research Report
  • [Presentation] 大気圧Heプラズマ処理したEDOTのFTIRによる評価2020

    • Author(s)
      白藤 立, 平野 舜太, 呉 準席
    • Organizer
      2020年日本表面真空学会学術講演会
    • Related Report
      2020 Annual Research Report
  • [Presentation] Depolymerization of Polysaccharides by Gas-Liquid Interface Plasma2020

    • Author(s)
      T. Shirafuji, H. Nakatani, T. Kono, and J.-S. Oh
    • Organizer
      30th Annual Meeting of MRSJ
    • Related Report
      2020 Annual Research Report
  • [Presentation] 水蒸気蒸発とガスドラッグを伴う流水面上の大気圧プラズマジェットの三次元数値シミュレーション2019

    • Author(s)
      白藤 立, 呉 準席
    • Organizer
      電気学会 放電・プラズマ・パルスパワー研究会, まちなかキャンパス長岡 (新潟県長岡市)
    • Related Report
      2019 Annual Research Report
  • [Presentation] 3D numerical simulation of APPJ on the flowing water surface2019

    • Author(s)
      T. Shirafuji, J.-S. Oh, and M. Ito
    • Organizer
      10th International Workshop on Microplasmas, May. 20-24, 2019 (Kyoto, Japan)
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Materials processing by efficient utilization of plasma-liquid interface2019

    • Author(s)
      T.Shirafuji
    • Organizer
      24th International Symposium on Plasma Chemistry, Jun. 9-14, 2019 (Napoli, Italy)
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Free standing functional membrane formation using plasma-liquid interface processes2019

    • Author(s)
      T.Shirafuji
    • Organizer
      Awaji Island Conference on Electron Spin Science & Technololgy 2019, Jun. 16-19, 2019 (Awaji, Japan)
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] On the formation of polymerized EDOT films using gas-liquid interfacial plasma2019

    • Author(s)
      T. Shirafuji, S. Azuma, and J.-S. Oh
    • Organizer
      XXXIV International Conference on Phenomena in Ionized Gases and the 10th International Conference on Reactive Plasmas, Jul. 14-19, 2019 (Sapporo, Japan)
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Effects of dielectric coating of an internal electrode for coaxial-type plasma/liquid interfacial processes2019

    • Author(s)
      H. Nakatani, J.-S. Oh, and T. Shirafuji
    • Organizer
      The 12th Asian-European International Conference on Plasma Surface Engineering, Sept. 1-5, 2019 (Jeju, Korea)
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Polymerization of EDOT using gas-liquid interfacial plasma2019

    • Author(s)
      R. Konishi, S. Hirano, S. Azuma, J.-S. Oh, and T. Shirafuji
    • Organizer
      The 12th Asian-European International Conference on Plasma Surface Engineering, Sept. 1-5, 2019 (Jeju, Korea)
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 大気圧プラズマジェットから水面に供給されるOHラジカルフラックスの水面流速依存性2019

    • Author(s)
      白藤 立, 呉 準席
    • Organizer
      2019年日本表面真空学会学術講演会, つくば国際会議場 (茨城県つくば市)
    • Related Report
      2019 Annual Research Report
  • [Presentation] 液体が関与するプラズマ材料プロセシング2019

    • Author(s)
      白藤 立
    • Organizer
      2019年日本表面真空学会学術講演会, つくば国際会議場 (茨城県つくば市)
    • Related Report
      2019 Annual Research Report
    • Invited
  • [Presentation] Gas-liquid interfacial plasma polymerization of EDOT2019

    • Author(s)
      S. Hirano, J.-S. Oh, R. Konishi, and T. Shirafuji
    • Organizer
      Materials Research Meeting 2019, Dec. 10-14, 2019 (Yokohama, Japan)
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Remarks] 研究室Web

    • URL

      http://t-shirafuji.jp/

    • Related Report
      2022 Annual Research Report
  • [Remarks] http://t-shirafuji.jp/

    • Related Report
      2021 Annual Research Report
  • [Remarks] 研究室の広報用Web

    • URL

      http://t-shirafuji.jp/

    • Related Report
      2020 Annual Research Report
  • [Remarks] 研究室のWebページ

    • URL

      http://t-shirafuji.jp/

    • Related Report
      2019 Annual Research Report
  • [Remarks] 所属研究機関による研究者紹介Webページ

    • URL

      https://research-soran17.osaka-cu.ac.jp/html/100001258_ja.html

    • Related Report
      2019 Annual Research Report
  • [Patent(Industrial Property Rights)] 処理装置,及び処理方法2023

    • Inventor(s)
      白藤 立,呉 準席
    • Industrial Property Rights Holder
      公立大学法人大阪
    • Industrial Property Rights Type
      特許
    • Industrial Property Number
      2023-026460
    • Filing Date
      2023
    • Related Report
      2022 Annual Research Report
  • [Patent(Industrial Property Rights)] 導電性薄膜の製造方法および製造装置2020

    • Inventor(s)
      白藤 立,呉 準席
    • Industrial Property Rights Holder
      公立大学法人大阪
    • Industrial Property Rights Type
      特許
    • Industrial Property Number
      2020-168939
    • Filing Date
      2020
    • Related Report
      2020 Annual Research Report

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Published: 2019-04-18   Modified: 2024-01-30  

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