結晶C-CおよびCC結合キラル共性有機フレームワーク
Chen Yuan1, Shiguo Fu1, Kuiwei Yang2
1School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules and State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai 200240, P. R. China.
Journal of the American Chemical Society
|December 28, 2020
まとめ
C-C結合による結晶共性有機フレームワーク (COF) の合成は困難である. この研究では,安定した,多孔性C-Cリンクされたフレームワークを達成するために,オレフィン結合COFを減少させる結晶から結晶への変換方法が導入されます.
科学分野:
- 材料科学
- 有機化学
- 超分子化学
背景:
- C-C結合を持つ結晶共性有機フレームワーク (COF) は非常に求められているが,合成することは困難である.
- COFにおけるC−C単一結合の新合成は,しばしば無形な材料を生成する.
研究 の 目的:
- 結晶C-C結合のCOFを合成する方法を開発する.
- 結晶から結晶への変換をCOFの修正のために探求する.
- 結果となるC-C関連COFの性質と用途を調査する.
主な方法:
- クイラルテトラベンザルデヒドをディニトリル単体でノイヴェナゲルポリコンデンサーションしてオレフィン結合COFを形成する.
- CC債券をC-C単一債券に直接削減する.
- フーリエ変換赤外線 (FTIR) と固体C NMRスペクトロシーを用いた特徴化.
- 孔隙性,化学的安定性,光学的性質の評価
主要な成果:
- 2D層の四角構造を持つ2つのオレフィン結合キラルCOFが成功して合成されました.
- 還元により,高結晶性と多孔性を保持した結晶性C-C単一結合のCOFが得られました.
- 減少したCOFは強い酸と塩基で優れた化学的安定性を示した.
- 減少したCOFは,原始COFと比較して,量子収量と光寿命が向上したブルーシフトの放出を示した.
結論:
- 新しい結晶から結晶への変換戦略により,安定した結晶C-C結合COFの合成が可能である.
- この方法は,COFにおけるC−C結合形成の de novo合成の限界を克服する.
- その結果得られるCOFは,調節可能な光学特性を提供し,キラルセンシングでの応用の可能性があります.
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