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Guest-mediated phase transitions in a flexible pillared-layered metal–organic framework under high-pressure
The guest-dependent flexibility of the pillared-layered metal–organic framework (MOF), Zn(2)bdc(2)dabco·X(guest), where guest = EtOH, DMF or benzene, has been examined by high-pressure single crystal X-ray diffraction. A pressure-induced structural phase transition is found for the EtOH- and DMF-inc...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
The Royal Society of Chemistry
2021
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8549792/ https://www.ncbi.nlm.nih.gov/pubmed/34760164 http://dx.doi.org/10.1039/d1sc03108b |
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author | Turner, Gemma F. McKellar, Scott C. Allan, David R. Cheetham, Anthony K. Henke, Sebastian Moggach, Stephen A. |
author_facet | Turner, Gemma F. McKellar, Scott C. Allan, David R. Cheetham, Anthony K. Henke, Sebastian Moggach, Stephen A. |
author_sort | Turner, Gemma F. |
collection | PubMed |
description | The guest-dependent flexibility of the pillared-layered metal–organic framework (MOF), Zn(2)bdc(2)dabco·X(guest), where guest = EtOH, DMF or benzene, has been examined by high-pressure single crystal X-ray diffraction. A pressure-induced structural phase transition is found for the EtOH- and DMF-included frameworks during compression in a hydrostatic medium of the guest species, which is dependent upon the nature and quantity of the guest in the channels. The EtOH-included material undergoes a phase transition from P4/mmm to C2/m at 0.69 GPa, which is accompanied by a change in the pore shape from square to rhombus via super-filling of the pores. The DMF-included material undergoes a guest-mediated phase transition from I4/mcm to P4/mmm at 0.33 GPa via disordering of the DMF guest. In contrast, the benzene-included framework features a structure with rhombus-shaped channels at ambient pressure and shows direct compression under hydrostatic pressure. These results demonstrate the large influence of guest molecules on the high-pressure phase behavior of flexible MOFs. Guest-mediated framework flexibility is useful for engineering MOFs with bespoke pore shapes and compressibility. |
format | Online Article Text |
id | pubmed-8549792 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2021 |
publisher | The Royal Society of Chemistry |
record_format | MEDLINE/PubMed |
spelling | pubmed-85497922021-11-09 Guest-mediated phase transitions in a flexible pillared-layered metal–organic framework under high-pressure Turner, Gemma F. McKellar, Scott C. Allan, David R. Cheetham, Anthony K. Henke, Sebastian Moggach, Stephen A. Chem Sci Chemistry The guest-dependent flexibility of the pillared-layered metal–organic framework (MOF), Zn(2)bdc(2)dabco·X(guest), where guest = EtOH, DMF or benzene, has been examined by high-pressure single crystal X-ray diffraction. A pressure-induced structural phase transition is found for the EtOH- and DMF-included frameworks during compression in a hydrostatic medium of the guest species, which is dependent upon the nature and quantity of the guest in the channels. The EtOH-included material undergoes a phase transition from P4/mmm to C2/m at 0.69 GPa, which is accompanied by a change in the pore shape from square to rhombus via super-filling of the pores. The DMF-included material undergoes a guest-mediated phase transition from I4/mcm to P4/mmm at 0.33 GPa via disordering of the DMF guest. In contrast, the benzene-included framework features a structure with rhombus-shaped channels at ambient pressure and shows direct compression under hydrostatic pressure. These results demonstrate the large influence of guest molecules on the high-pressure phase behavior of flexible MOFs. Guest-mediated framework flexibility is useful for engineering MOFs with bespoke pore shapes and compressibility. The Royal Society of Chemistry 2021-09-07 /pmc/articles/PMC8549792/ /pubmed/34760164 http://dx.doi.org/10.1039/d1sc03108b Text en This journal is © The Royal Society of Chemistry https://creativecommons.org/licenses/by/3.0/ |
spellingShingle | Chemistry Turner, Gemma F. McKellar, Scott C. Allan, David R. Cheetham, Anthony K. Henke, Sebastian Moggach, Stephen A. Guest-mediated phase transitions in a flexible pillared-layered metal–organic framework under high-pressure |
title | Guest-mediated phase transitions in a flexible pillared-layered metal–organic framework under high-pressure |
title_full | Guest-mediated phase transitions in a flexible pillared-layered metal–organic framework under high-pressure |
title_fullStr | Guest-mediated phase transitions in a flexible pillared-layered metal–organic framework under high-pressure |
title_full_unstemmed | Guest-mediated phase transitions in a flexible pillared-layered metal–organic framework under high-pressure |
title_short | Guest-mediated phase transitions in a flexible pillared-layered metal–organic framework under high-pressure |
title_sort | guest-mediated phase transitions in a flexible pillared-layered metal–organic framework under high-pressure |
topic | Chemistry |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8549792/ https://www.ncbi.nlm.nih.gov/pubmed/34760164 http://dx.doi.org/10.1039/d1sc03108b |
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