超拡散水層内の二次共振有機枠薄膜の閉じ込め合成
Qing Hao1,2, Chuangqi Zhao3, Bing Sun4
1Key Laboratory of Molecular Nanostructure and Nanotechnology, Institute of Chemistry , Chinese Academy of Sciences and Beijing National Laboratory for Molecular Sciences , Beijing 100190 , P. R. China.
Journal of the American Chemical Society
|September 5, 2018
まとめ
この研究は,水と油を混ぜたエムルションを使用して,独立した二次元共性有機フレームワーク (2D COF) の薄膜を合成するための新しい方法を導入しています. これらのCOFフィルムは優れた機械的特性を持ち,ナノフィルタリングとセンシングの用途に適しています.
科学分野:
- 材料科学
- ナノテクノロジー
- 化学工学
背景:
- 二次元共性有機フレームワーク (2D COF) は,調節可能な特性を有する高度な材料です.
- 2次元COFの合成方法は,しばしば粉末になるか,複雑な手順を必要とする.
- 2D COF薄膜の開発は,高度なアプリケーションに不可欠です.
研究 の 目的:
- 2D COF薄膜の限られた合成のための新しい効率的な方法を開発する.
- 合成されたCOF膜の構造的,形態的,および機械的性質を特徴付ける.
- ナノフィルタレーションとセンシングにおけるこれらのフリースタンドCOFフィルムの応用可能性を実証する.
主な方法:
- 反応媒介として油に浸された水凝土に薄い超拡散水を使用する限られた合成アプローチを使用した.
- オイル/水/ヒドロゲル界面でのCOF合成を促進するために,オイルとヒドロゲルにロードされたモノマー.
- 機械的性質の特徴化のために使用された原子力顕微鏡 (AFM) のインデント.
主要な成果:
- 均質な地形,大きな面積,制御可能な厚さ (4-150 nm) を有する独立した2DCOF薄膜を成功裏に合成した.
- 特徴づけられたフィルムは,特定の方向の結晶性と25.9 ± 0.6 GPaのヤングのモジュールを示し,良い機械的強さを示した.
- Ru3+のナノフィルター膜と光電化学センサーの製造におけるこれらのフィルムの有用性を実証した.
- 合成戦略を拡張し,結晶性ゼオリチウムイミダゾラートフレーム-8 (ZIF-8) の薄膜を製造した.
結論:
- 開発された油/水/ヒドロゲルインターフェース戦略は,高品質の,独立した2DCOF薄膜を合成するための新しい経路を提供します.
- 合成されたCOFフィルムは,高度な膜およびセンサアプリケーションに望ましい性質を持っています.
- このメソッドの汎用性は,ZIF-8合成に成功することで確認され,広範な適用性を強調した.
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