Control of structural flexibility of layered-pillared metal-organic frameworks anchored at surfaces
| Autor: | Inke Hante, Roland A. Fischer, Konstantin Epp, Gregor Kieslich, Anna Lisa Semrau, Min Tu, Samuel J. Baxter, Michael Paulus, Suttipong Wannapaiboon, Andreas Schneemann, Christian Sternemann |
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| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
0301 basic medicine
Materials science Science General Physics and Astronomy Anchoring Nanotechnology 02 engineering and technology Epitaxy Article General Biochemistry Genetics and Molecular Biology 03 medical and health sciences Microelectronics Thin film Porosity lcsh:Science Multidisciplinary business.industry Rational design General Chemistry 021001 nanoscience & nanotechnology ddc 030104 developmental biology Metal-organic framework lcsh:Q Crystallite 0210 nano-technology business |
| Zdroj: | Nature Communications, Vol 10, Iss 1, Pp 1-10 (2019) Nature Communications |
| ISSN: | 2041-1723 |
| DOI: | 10.1038/s41467-018-08285-5 |
| Popis: | Flexible metal-organic frameworks (MOFs) are structurally flexible, porous, crystalline solids that show a structural transition in response to a stimulus. If MOF-based solid-state and microelectronic devices are to be capable of leveraging such structural flexibility, then the integration of MOF thin films into a device configuration is crucial. Here we report the targeted and precise anchoring of Cu-based alkylether-functionalised layered-pillared MOF crystallites onto substrates via stepwise liquid-phase epitaxy. The structural transformation during methanol sorption is monitored by in-situ grazing incidence X-ray diffraction. Interestingly, spatially-controlled anchoring of the flexible MOFs on the surface induces a distinct structural responsiveness which is different from the bulk powder and can be systematically controlled by varying the crystallite characteristics, for instance dimensions and orientation. This fundamental understanding of thin-film flexibility is of paramount importance for the rational design of MOF-based devices utilising the structural flexibility in specific applications such as selective sensors. Understanding the structural dynamics of flexible metal-organic frameworks at a thin-film level is key if they are to be implemented in devices. Here, Fischer and colleagues anchor flexible MOF crystallites onto substrates and identify a structural responsiveness that is distinct to that of the bulk. |
| Databáze: | OpenAIRE |
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