2022 Fiscal Year Final Research Report
Synthesis of functional composite thin films using a reaction field at a plasma/liquid interface
| Project/Area Number |
19H01888
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Review Section |
Basic Section 14030:Applied plasma science-related
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| Research Institution | Osaka Metropolitan University (2022)
Osaka City University (2019-2021) |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
呉 準席 大阪公立大学, 大学院工学研究科, 教授 (90533779)
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| Project Period (FY) |
2019-04-01 – 2023-03-31
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| 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 |
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| 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.
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| Free Research Field |
プラズマプロセス工学
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| 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．
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