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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...

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Autores principales: Turner, Gemma F., McKellar, Scott C., Allan, David R., Cheetham, Anthony K., Henke, Sebastian, Moggach, Stephen A.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: The Royal Society of Chemistry 2021
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.
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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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