巨大な開口部を有するキラル金属－有機ナノチューブの開発

具有大开口的手性金属有机纳米管的开发

• 批准号: 16F16337
• 负责人: 佐藤 弘志
• 金额: $ 1.41万
• 依托单位: The University of Tokyo
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for JSPS Fellows
• 财政年份: 2016
• 资助国家: 日本
• 起止时间: 2016-11-07 至 2019-03-31
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-16F16337/
• 关键词: porous crystal; catenane; metal-organic framework; 多孔体; 結晶; 配位高分子; カテナン; Porous materials; Stimuli response; Coordination polymers

Polycatenation is one of the commonly observed entanglement patterns in metal-organic frameworks (MOFs, where 0D, 1D or 2D motifs are connected through mechanical bonds to give a framework of a higher dimension. Usually the formation of mechanical bonds within polycatenated MOFs mainly rely on the crystallization process which is sensitive to subtle reaction conditions. As a result, the outcome of the topology is usually difficult to predict, and the synthesis of polycatenated MOFs is quite serendipitous.Here we report a more controlled method to synthesize polycatenated MOFs by using a ligand that contains a mechanical bond. Mechanically interlocked molecules (MIMs), such as catenanes and rotaxanes have been introduced into MOFs, but the mechanical bond only acts as the pendant of the ligand. In this work, a tetra-functionalized [2]catenane was designed to have two carboxylic acid groups on each macrocycle. When the ligand reacted with suitable metal ions such as Co(II), [2]catenanes are connected by paddlewheel units to produce a 3D framework with the mechanical bond of the catenanes forms a part of the backbone. This catenane-backboned MOF was found to be able to sense subtle environmental change, as revealed by the temperature- and solvent-dependent polymorphism. More importantly, the crystal was found to be a mechanically softest crystal.

Polycatenation is one of the commonly observed entanglement patterns in metal-organic frameworks (MOFs, where 0D, 1D or 2D motifs are connected through mechanical bonds to give a framework of a higher dimension. Usually the formation of mechanical bonds within polycatenated MOFs mainly rely on the crystallization process which is sensitive to subtle reaction conditions. As a result, the outcome of the topology is usually difficult to predict, and多养育MOF的合成是相当串行的。在这里，我们报告了一种更受控的方法，可以使用包含机械键的配体来合成多载体的MOF（MIMS）。当每个大环上设计了两个羧酸，当配体与合适的金属离子（例如CO（ii））反应，[2] catenanes通过桨板单元连接到3D框架，与catenanes的机械键合成了这种环境，将catenanes与catenane的机械构成，将catenanes与catenane的机械构成了catenane cate的一部分。正如温度和溶剂依赖性多态性所揭示的。