nbo トポロジーを持つ立方体3D共性有機フレームワーク
Xue Wang1,2, Mounib Bahri3, Zhiwei Fu2
1Leverhulme Research Centre for Functional Materials Design, University of Liverpool, Liverpool, L7 3NY, U.K.
Journal of the American Chemical Society
|September 13, 2021
まとめ
研究者らは,正方形の平面コバルト (II) フタロシアニン単位とスピロボレート結合を用いて,新しい多孔性三次元共性有機フレームワーク (3D COF) を合成した. この新しい材料はSPB-COF-DBAで 高結晶度で 表面積が大きい.
科学分野:
- 材料科学
- 化学について
- ナノテクノロジー
背景:
- 三次元 (3D) の共性有機フレームワーク (COF) は,様々な分野で応用できる重要な材料です.
- 彼らの合成はしばしば高接続性のビルディングブロックや 構造的アライメントの正確な制御に依存しています
- nboのトポロジーのような特定のネットワークトポロジーを達成することは,合成的な課題です.
研究 の 目的:
- nbo トポロジーで3D COFを構築するための新しい合成戦略を開発する.
- 正方形平面コバルト (PcCo) ユニットと四面体スピロボラート (SPB) 結合を制御されたフレームアセットに使用する.
- 形成されたCOFの構造,結晶,および多孔性の性質を特徴づける.
主な方法:
- PcCo ユニットと SPB リンクを使用した制御されたアラインメント戦略を使用します.
- PcCoユニット間の90°二面角を強制するためにSPBリンクを使用し,nboトポロジーの形成を指示します.
- 粉末X線微分法 (PXRD) と高解像度伝送電子顕微鏡 (HR-TEM) を用いて合成された材料 (SPB-COF-DBA) を特徴づける.
主要な成果:
- 浸透しないnboトポロジーで,多孔性3DCOF,SPB-COF-DBAの合成に成功しました.
- SPB-COF-DBAは高結晶性と長距離順序を示しており,PXRDで11個の解散ピークによって確認されています.
- HR-TEMイメージングで 円形の格子が確認されました
- この材料は立方体毛穴と永久毛穴を持ち,BET (Brunauer-Emmett-Teller) の表面積は1726 m2g−1である.
結論:
- 特定のビルディングブロックを使用した制御されたアライメント戦略は,複雑な3D COF トポロジーを構築するのに有効です.
- SPB-COF-DBAは,高表面積の材料を必要とする分野での潜在的な応用を持つ新しい,高結晶性,多孔性の材料を表しています.
- この研究は,PcCoユニットが,定義された多孔性を持つ堅固な3Dフレームワークに成功裏に統合されたことを示しています.
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