A Charged Coordination Cage-Based Porous Salt
A Charged Coordination Cage-Based Porous Salt
复制标题
DOI：
10.1021/jacs.0c02806
复制
发表时间：
2020-05-27
影响因子：
15
通讯作者：
Bloch, Eric D.
中科院分区：
文献类型：
--
作者：
Gosselin, Eric J.;Decker, Gerald E.;Bloch, Eric D.
金属有机框架和多孔配位笼由于其高度的可调性而显示出令人难以置信的前景。然而，追求精确目标的混合功能，如多个配体类型或混合金属组合物的合成往往是偶然的，需要合成后的修饰策略，或基于复杂的配体设计。在此，我们提出了一种通过制备多孔盐来控制合成混合功能金属有机材料的新方法。更具体地，相反电荷的多孔离子分子的组合提供了其中阳离子笼和阴离子笼之间的比率是潜在可调的框架状材料。所得的双多孔盐显示出与起始材料相比具有增加的气体吸收能力的母体笼的光谱特征。这种方法将广泛适用于所有家庭的多孔离子，并代表了一个新的和强大的方法，用于合成多孔固体定制功能。
Metal-organic frameworks and porous coordination cages have shown incredible promise as a result of their high tunability. However, syntheses pursuing precisely targeted mixed functionalities, such as multiple ligand types or mixed-metal compositions are often serendipitous, require postsynthetic modification strategies, or are based on complex ligand design. Herein, we present a new method for the controlled synthesis of mixed functionality metal-organic materials via the preparation of porous salts. More specifically, the combination of porous ionic molecules of opposite charge affords framework-like materials where the ratio between cationic cage and anionic cage is potentially tunable. The resulting doubly porous salt displays the spectroscopic signatures of the parent cages with increased gas uptake capacities as compared to starting materials. This approach will be widely applicable to all families of porous ions and represents a new and powerful method for the synthesis of porous solids with tailored functionalities.