結晶ダイオキシン結合の共性有機構造は,不可逆的な反応から生じる
Bing Zhang1, Mufeng Wei1, Haiyan Mao2
1Department of Chemistry , University of California-Berkeley ; Materials Sciences Division, Lawrence Berkeley National Laboratory; Kavli Energy NanoSciences Institute at Berkeley, and Berkeley Global Science Institute, Berkeley , California 94720 , United States.
Journal of the American Chemical Society
|September 25, 2018
まとめ
新しい共性有機フレームワーク (COF) は,不可逆的な核愛性芳香置換反応を用いて合成された. COF-316とCOF-318と呼ばれる,安定した,多孔性のCOFは,合成後の高度な改変を可能にします.
科学分野:
- 材料科学
- 有機化学
- ナノテクノロジー
背景:
- 協和有機フレームワーク (COF) は,調節性特性を有する結晶性多孔ポリマーである.
- 伝統的なCOF合成はしばしば可逆的凝縮反応に依存し,化学的安定性を制限する.
- アクセシブルな機能を持つ堅牢なCOFの開発は,高度なアプリケーションにとって不可欠です.
研究 の 目的:
- 逆戻りできない反応を用いて新しい2D共性有機フレームワーク (COF) を合成する.
- 合成されたCOFの化学的安定性と多孔性を調査する.
- これらの強固なフレームワークの合成後の改変の可能性を実証する.
主な方法:
- 三角形2,3,6,7,10,11-ヘキサヒドロキシトリフェニレン (HHTP) と線形四フルオルファロニトリル (TFPN) または2,3,5,6-四フルオル-4-ピリジン炭素ニトリル (TFPC) の間の利用された核性芳香置換 (SNAr) 反応.
- 結晶の2DCOF,COF-316とCOF-318が1,4ダイオキシン結合で結ばれている.
- COF-316の合成後の改良を 厳しい条件下で実施した.
主要な成果:
- COF-316とCOF-318を不可逆的なSNAr反応で成功して合成した.
- その結果生成される1,4-ダイオキシン結合COFは,酸性および塩基性条件下で高い化学的安定性を示す.
- 永続的な多孔性と,新しい機能の導入のための合成後の改変の実現可能性が示されています.
結論:
- 不逆のSNAr反応は,安定したCOFを合成するための堅固な経路を提供します.
- COF-316とCOF-318は固有の化学的安定性と永久の多孔性を持っています.
- これらの新しいCOFは,合成後の機能化を通じて,高度な材料設計とアプリケーションのための多用途のプラットフォームを提供します.
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