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首页> 外文期刊>Chemistry: A European journal >Gated Channels and Selectivity Tuning of CO2 over N-2 Sorption by Post-Synthetic Modification of a UiO-66-Type Metal-Organic Framework
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Gated Channels and Selectivity Tuning of CO2 over N-2 Sorption by Post-Synthetic Modification of a UiO-66-Type Metal-Organic Framework

机译：UiO-66型金属有机骨架的后合成修饰在N-2吸附下的门控通道和CO2选择性调谐

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摘要

The highly porous and stable metal-organic framework (MOF) UiO-66 was altered using post-synthetic modifications (PSMs). Prefunctionalization allowed the introduction of carbon double bonds into the framework through a four-step synthesis from 2-bromo-1,4-benzenedicarboxylic acid; the organic linker 2-allyl-1,4-benzenedicarboxylic acid was obtained. The corresponding functionalized MOF (UiO-66-allyl) served as a platform for further PSMs. From UiO-66-allyl, epoxy, dibromide, thioether, diamine, and amino alcohol functionalities were synthesized. The abilities of these compounds to adsorb CO2 and N-2 were compared, which revealed the structure-selectivity correlations. All synthesized MOFs showed profound thermal stability together with an increased ability for selective CO2 uptake and molecular gate functionalities at low temperatures.
机译：使用合成后修饰（PSM）更改了高度多孔且稳定的金属有机骨架（MOF）UiO-66。预官能化允许通过从2-溴-1,4-苯二甲酸的四步合成将碳双键引入骨架。得到有机连接基2-烯丙基-1，4-苯二甲酸。相应的功能化MOF（UiO-66-烯丙基）用作其他PSM的平台。由UiO-66-烯丙基合成环氧，二溴化物，硫醚，二胺和氨基醇官能团。比较了这些化合物吸附CO2和N-2的能力，从而揭示了结构选择性的相关性。所有合成的MOF均显示出深厚的热稳定性，并且在低温下具有更高的选择性CO2吸收能力和分子门功能。

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