Unusual adsorption behaviours and responsive structural dynamics via selective gate effects of an hourglass porous metal–organic framework
| Autor: | Ji-Jun Jiang, Mihail Barboiu, Dawei Wang, Cheng-Xia Chen, Cheng-Yong Su, Zhang-Wen Wei, Ying Xiong, Yan-Zhong Fan, Sha Chen |
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| Přispěvatelé: | Sun Yat-Sen University [Guangzhou] (SYSU), Institut Européen des membranes (IEM), Centre National de la Recherche Scientifique (CNRS)-Ecole Nationale Supérieure de Chimie de Montpellier (ENSCM)-Université Montpellier 2 - Sciences et Techniques (UM2)-Institut de Chimie du CNRS (INC)-Université de Montpellier (UM) |
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
Diffraction
Materials science Ligand General Chemical Engineering Diffusion 02 engineering and technology General Chemistry 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences law.invention Adsorption Chemical physics law Molecule [CHIM]Chemical Sciences Hourglass 0210 nano-technology Porosity Single crystal |
| Zdroj: | RSC Advances RSC Advances, Royal Society of Chemistry, 2019, 9 (64), pp.37222-37231. ⟨10.1039/c9ra07301a⟩ |
| ISSN: | 2046-2069 |
| Popis: | International audience; An hourglass porous metal-organic framework, LIFM-12, constructed on a T-shaped flexible ligand with Cu 2+ paddle-wheel clusters, shows temperature and gas adsorption responsive structural dynamics upon reversible molecular guest binding. Temperature-dependent single crystal and powder X-ray diffraction experiments show that the open gate status of the framework with adaptive behaviours facilitates kinetic diffusion of gas molecules resulting in the sequential filling of pores of different sizes, thus creating a breathing behaviour reminiscent of the observation of several steps in adsorption isotherms. In addition, adsorption studies revealed that LIFM-12 performs exceptional adsorption selectivity of 10-25 for CO 2 versus light gases N 2 , CH 4 , and CO and up to 200 for C 3 H 6 versus CH 4 . |
| Databáze: | OpenAIRE |
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