2021 Fiscal Year Final Research Report
Possibility of emulsions stabilized with Janus nanosheets as novel reaction fields with liquid-liquid interfaces
| Project/Area Number |
20K21241
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| Research Category |
Grant-in-Aid for Challenging Research (Exploratory)
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| Allocation Type | Multi-year Fund |
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| Review Section |
Medium-sized Section 36:Inorganic materials chemistry, energy-related chemistry, and related fields
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| Research Institution | Waseda University |
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Principal Investigator |
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| Project Period (FY) |
2020-07-30 – 2022-03-31
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| Keywords | ヤヌス材料 / ナノシート / 界面活性 / グラフト反応 / インターカレーション |
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| Outline of Final Research Achievements |
By using the unique layered structure of potassium hexaniobate trihydrate with two types of interlayers with different reactivities, interlayers I and II, which are alternately appear in its stacking direction, water-dispersible Janus nanosheets were prepared via surface modification of interlayers I and II with phenylphosphonic acid and phosphoric acid, respectively, and subsequent exfoliation. The resultant Janus nanosheets formed an oil-in-water emulsion in a biphasic water-toluene system. An "on water reaction" performed in the emulsion formed with Janus nanosheets demonstrated that the liquid-liquid interface of the emulsion is a superior reaction field.
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| Free Research Field |
ハイブリッド材料化学
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| Academic Significance and Societal Importance of the Research Achievements |
エマルションは，水と油（有機溶媒）が分散している状態で，一般に界面活性剤を用いて安定化させている．本研究は，ナノシートの表面と裏面に異なる官能基を固定化したヤヌスナノシートを水に分散するように設計し，これを用いて水中に有機溶媒であるトルエンが分散しているエマルションを安定化させた．このエマルションの水とトルエンが直接接触している界面が、界面で起こる反応の優れた反応場であることを示した．
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