Inflation Negative Compressibility during Intrusion-Extrusion of a Non-Wetting Liquid into a Flexible Nanoporous Framework
| Autor: | Yaroslav Grosu, Tong Feng, Hai-Feng Zhang, Monika Geppert-Rybczyńska, Paweł Zajdel, Markus Bleuel, Alexander R. Lowe, Juscelino B. Leão, Mian Li, Dong Luo, Grethe V. Jensen, Dan Li, Mirosław Chorążewski |
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| Rok vydání: | 2021 |
| Předmět: |
Work (thermodynamics)
Materials science Nanoporous Thermodynamics 02 engineering and technology Neutron scattering 010402 general chemistry 021001 nanoscience & nanotechnology Compression (physics) 01 natural sciences 0104 chemical sciences Compressibility General Materials Science Extrusion Physical and Theoretical Chemistry 0210 nano-technology Porosity Order of magnitude |
| Zdroj: | The journal of physical chemistry letters. 12(20) |
| ISSN: | 1948-7185 |
| Popis: | Negative compressibility (NC) is a phenomenon when an object expands/shrinks in at least one of its dimensions upon compression/decompression. NC is very rare and is of great interest for a number of applications. In this work a gigantic (more than one order of magnitude higher compared to the reported values) NC effect was recorded during intrusion-extrusion of a non-wetting liquid into a flexible porous structure. For this purpose, in situ high-pressure neutron scattering, intrusion-extrusion experiments, and DFT calculations were applied to a system consisting of water and a highly hydrophobic Cu2(tebpz) metal-organic framework (MOF), which upon water penetration expands in a and c directions to demonstrate NC coefficients more than order of magnitude higher compared to the highest values ever reported. The proposed approach is not limited to the materials used in this work and can be applied to achieve coefficients of negative linear compressibility of more than 103 TPa-1. |
| Databáze: | OpenAIRE |
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