Microporosity Enhancement in a One-Dimensional Imidazolium Caged Metal-Organic Framework by Highly Selective Postsynthetic Removal of Inner Yttrium Clusters,Bulletin of the Korean Chemical Society

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Microporosity Enhancement in a One-Dimensional Imidazolium Caged Metal-Organic Framework by Highly Selective Postsynthetic Removal of Inner Yttrium Clusters
Bulletin of the Korean Chemical Society ( IF 2.3 ) Pub Date : 2021-07-09 , DOI: 10.1002/bkcs.12339
Nakeun Ko ₁ , Hyun‐Jung Lee ₁ , Younggyu Seo ₁ , Daesung Jung ₂ , Chan‐Cuk Hwang ₂ , Jaheon Kim ₃ , Eunsung Lee ₁

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A one-dimensional (1D) metal-organic caged framework (YMOF-Y) was obtained via self-assembly of yttrium cations with a U-shape imidazolium based ligand and the structure was elucidated by single-crystal X-ray diffraction analysis. The YMOF-Y has a unique 1D chain structure composed of octa-imidazolium based cages. Inside the cage, an inner Y₄ cluster connected to yttrium cations of the cage through formate anions is present. The microporosity and flexibility of YMOF-Y can be improved by an unprecedented postsynthetic removal of the Y₄ clusters from the cage by washing with alkali metal solutions. The removal of the Y₄ cluster is reflected in a significant change in the properties of the metal-organic framework (MOF), as confirmed by carbon dioxide sorption measurements and variable temperature powder X-ray diffraction analysis.

中文翻译：

通过高选择性合成后去除内部钇簇来提高一维咪唑笼金属有机骨架的微孔率

通过钇阳离子与U形咪唑鎓基配体的自组装获得一维（1D）金属有机笼状骨架（YMOF-Y），并通过单晶X射线衍射分析阐明其结构。所述YMOF-Y具有基于辛咪唑笼构成的独特1D链结构。在笼内，存在通过甲酸阴离子连接到笼的钇阳离子的内部Y ₄簇。YMOF-Y的微孔率和柔韧性可以通过用碱金属溶液洗涤从笼子中空前的合成后去除 Y ₄簇来提高。去除Y ₄ 正如二氧化碳吸附测量和变温粉末 X 射线衍射分析所证实的那样，簇反映在金属有机骨架 (MOF) 性质的显着变化中。

更新日期：2021-07-27

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