リンカー非対称化:8つ接続された六核ノードを持つレアアーステトラカルボキシラートフレームワークのシリーズへのアクセス
Xiu-Liang Lv1,2, Liang Feng2, Lin-Hua Xie1
1Beijing Key Laboratory for Green Catalysis and Separation and Department of Environmental Chemical Engineering, Beijing University of Technology, Beijing 100124, People's Republic of China.
Journal of the American Chemical Society
|January 25, 2021
まとめ
メタル・オーガニック・フレームワーク (MOF) の設計は,新しい材料の鍵です. この研究は,分離と触媒のための新しい構造を持つ複雑な稀土MOFの作成にリンク器の非対称化が不可欠であることを明らかにしています.
科学分野:
- 材料科学
- 化学について
- クリスタルグラフィー
背景:
- メタル・オーガニック・フレームワーク (MOF) は,様々な用途のために調整可能な多孔構造を提供します.
- 特定のクラスター接続性を持つ稀土 (RE) MOFを合成することは依然として困難です.
- 建築ユニットの合理的な設計は,多孔性の材料の構造的多様性にとって不可欠です.
研究 の 目的:
- リンカーのサイズ,硬さ,対称性がRE-テトラカルボキシラートMOFの形成にどのように影響するかを調査する.
- 特定のクラスターノードを持つRE-MOFの構築におけるリンク器非対称化の役割を明らかにする.
- 新しい MOF トポロジーとその潜在的な応用を探求する.
主な方法:
- 9つの新しいRE-MOF (PCN-50X,X = 1-9) の体系的な合成と構造的特徴付け
- リンカーの特性 (サイズ,幾何学,対称性) とそのMOF組立に対する影響の分析.
- 結果のMOF構造のトポロジカル分析
主要な成果:
- リンカーの非対称化により,8つの接続された六核クラスターを持つRE-MOFの形成が可能である.
- トラペゾイド型または四面体型のリンクは,8つ接続された六核のノードを持つMOFを生成します.
- 正方形または長方形のリンクは,12 つ接続されたノードと shp トポロジーを持つMOFにつながります.
- 前例のない2つの (4, 8) 接続された網 (lxlとjun) は,合理的なリンク設計によって得られた.
結論:
- MOFの構造的複雑性を高める強力な戦略です.
- このアプローチは,希土元素を含む非デフォルトのMOFトポロジーへのアクセスを可能にします.
- 合成されたMOFは,高度な分離と触媒の応用の可能性を示しています.
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