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首页> 外文期刊>Crystal growth & design >Selective adsorption properties of cationic metal-organic frameworks based on imidazolic linker
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Selective adsorption properties of cationic metal-organic frameworks based on imidazolic linker

机译：基于咪唑连接基的阳离子金属有机骨架的选择性吸附性能

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摘要

In this work we propose an approach for the controlled synthesis of cationic frameworks by the use of imidazolium salts as linker molecules. The imidazolium salt linker H_2ImidCl was prepared in five steps and converted with zinc and copper nitrate, respectively, to give the two topologically different cationic frameworks [Cu(Imid)(H_2O)] ~+ and [Zn_4(Imid)_5]~(3+). The framework charge is compensated by anions located in the pores. [Cu(Imid)(H _2O)]~+ shows a selective adsorption of organic molecules either bearing a carboxylic group or having an ionic nature. Furthermore, adsorbed molecules featuring a carboxylic group are captured inside the pores, whereas ionic substances can be reversibly adsorbed and desorbed, which was followed by UV/vis spectroscopy.
机译：在这项工作中，我们提出了一种通过使用咪唑鎓盐作为连接分子来控制合成阳离子骨架的方法。分五步制备咪唑鎓盐连接基H_2ImidCl，分别用硝酸锌和硝酸铜转化，得到两个拓扑不同的阳离子骨架[Cu（Imid）（H_2O）]〜+和[Zn_4（Imid）_5]〜（3 +）。骨架电荷由位于孔中的阴离子补偿。 [Cu（Imid）（H _2O）]〜+显示带有羧基或具有离子性质的有机分子的选择性吸附。此外，具有羧基的被吸附分子被捕获在孔内，而离子物质可以被可逆地吸附和解吸，然后进行紫外/可见光谱。

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