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Cucurbituril-Encapsulating Metal-Organic Framework via Mechanochemistry: Adsorbents with Enhanced Performance.

ABSTRACT: The first examples of monolithic crystalline host-guest hybrid materials are described. The reaction of 1,3,5-benzenetricarboxylic acid (H3 BTC) and Fe(NO3 )3 ⋅9 H2 O in the presence of decamethylcucurbit[5]uril ammonium chloride (MC5⋅2 NH4 Cl⋅4 H2 O) directly affords MC5@MIL-100(Fe) hybrid monoliths featuring hierarchical micro-, meso- and macropores. Particularly, this "bottle-around-ship" synthesis and one-pot shaping are facilitated by a newly discovered Fe-MC5 flowing gel formed by mechanochemistry. The designed MC5@MIL-100(Fe) hybrid material with MC5 as active domains shows enhanced CH4 and lead(II) uptake performance, and selective capture of lead(II) cations at low concentrations. This shows that host-guest hybrid materials can exhibit synergic properties that out-perform materials based on individual components.

SUBMITTER: Liang J 

PROVIDER: S-EPMC8362037 | biostudies-literature | 2021 Jul

REPOSITORIES: biostudies-literature

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Cucurbituril-Encapsulating Metal-Organic Framework via Mechanochemistry: Adsorbents with Enhanced Performance.

Liang Jun J   Gvilava Vasily V   Jansen Christian C   Öztürk Secil S   Spieß Alex A   Lin Jingxiang J   Xing Shanghua S   Sun Yangyang Y   Wang Hao H   Janiak Christoph C  

Angewandte Chemie (International ed. in English) 20210609 28

The first examples of monolithic crystalline host-guest hybrid materials are described. The reaction of 1,3,5-benzenetricarboxylic acid (H<sub>3</sub> BTC) and Fe(NO<sub>3</sub> )<sub>3</sub> ⋅9 H<sub>2</sub> O in the presence of decamethylcucurbit[5]uril ammonium chloride (MC5⋅2 NH<sub>4</sub> Cl⋅4 H<sub>2</sub> O) directly affords MC5@MIL-100(Fe) hybrid monoliths featuring hierarchical micro-, meso- and macropores. Particularly, this "bottle-around-ship" synthesis and one-pot shaping are facil  ...[more]

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