The Zeolitic Imidazolate Framework ZIF-4 under Low Hydrostatic Pressures

Pia Vervoorts; Claire L. Hobday; Michael G. Ehrenreich; Dominik Daisenberger; Gregor Kieslich

doi:10.1002/zaac.201900046

The Zeolitic Imidazolate Framework ZIF-4 under Low Hydrostatic Pressures

Pia Vervoorts, Claire L. Hobday, Michael G. Ehrenreich, Dominik Daisenberger, Gregor Kieslich^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

Abstract / Description of output

The zeolitic imidazolate framework ZIF-4 has recently been shown to exhibit large structural flexibility as a response to hydrostatic pressures, going from an open pore phase (ZIF-4(Zn)-op) to a closed pore phase (ZIF-4(Zn)-cp). The use of diamond anvil cell (DAC) setups has so far restricted thorough experimental insight into the evolution of lattice parameters at pressures below p < 0.1 GPa. Here we revisit the high-pressure properties of ZIF-4(Zn) by applying a new high-pressure powder X-ray diffraction setup that allows for tracking the evolution of lattice parameters in pressure increments as small as Δp = 0.005 GPa in the pressure range p = ambient – 0.4 GPa; a pressure resolution that cannot be achieved by using traditional DACs. We find ZIF-4(Zn) has a bulk modulus of K(ZIF-4(Zn)-op) = 2.01 ± 0.05 GPa and K(ZIF-4(Zn)-cp) = 4.39 ± 0.20 GPa, clarifying and confirming some ambiguous results that have been reported previously.

Original language	English
Pages (from-to)	970-974
Number of pages	5
Journal	Zeitschrift für anorganische und allgemeine Chemie (ZACC)
Volume	645
Issue number	15
Early online date	18 Jul 2019
DOIs	https://doi.org/10.1002/zaac.201900046
Publication status	E-pub ahead of print - 18 Jul 2019

Keywords / Materials (for Non-textual outputs)

Bulk modulus
Flexibility
Flexible metal-organic frameworks
High pressure
Zinc

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10.1002/zaac.201900046

https://onlinelibrary.wiley.com/doi/10.1002/zaac.201900046

Cite this

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title = "The Zeolitic Imidazolate Framework ZIF-4 under Low Hydrostatic Pressures",

abstract = "The zeolitic imidazolate framework ZIF-4 has recently been shown to exhibit large structural flexibility as a response to hydrostatic pressures, going from an open pore phase (ZIF-4(Zn)-op) to a closed pore phase (ZIF-4(Zn)-cp). The use of diamond anvil cell (DAC) setups has so far restricted thorough experimental insight into the evolution of lattice parameters at pressures below p < 0.1 GPa. Here we revisit the high-pressure properties of ZIF-4(Zn) by applying a new high-pressure powder X-ray diffraction setup that allows for tracking the evolution of lattice parameters in pressure increments as small as Δp = 0.005 GPa in the pressure range p = ambient – 0.4 GPa; a pressure resolution that cannot be achieved by using traditional DACs. We find ZIF-4(Zn) has a bulk modulus of K(ZIF-4(Zn)-op) = 2.01 ± 0.05 GPa and K(ZIF-4(Zn)-cp) = 4.39 ± 0.20 GPa, clarifying and confirming some ambiguous results that have been reported previously.",

keywords = "Bulk modulus, Flexibility, Flexible metal-organic frameworks, High pressure, Zinc",

author = "Pia Vervoorts and Hobday, {Claire L.} and Ehrenreich, {Michael G.} and Dominik Daisenberger and Gregor Kieslich",

note = "Funding Information: The authors would like to acknowledge beamtime at the Diamond Lightsource (Experiment EE19187–1, beamline I15) and the support from A. J. Smith during HPPXRD experiments. GK would like to thank the Fonds der chemischen Industrie for support through the Liebig fellowship Scheme and financial support from the DFG through a COORNET SPP1928 start up grant. PV gratefully acknowledges financial support by the DFG within the research unit FOR2433 “Switchable MOFs”. CLH gratefully acknowledges the University of Edinburgh for funding (Christina Miller Research Fellowship). Publisher Copyright: {\textcopyright} 2019 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim",

year = "2019",

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doi = "10.1002/zaac.201900046",

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T1 - The Zeolitic Imidazolate Framework ZIF-4 under Low Hydrostatic Pressures

AU - Vervoorts, Pia

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AU - Ehrenreich, Michael G.

AU - Daisenberger, Dominik

AU - Kieslich, Gregor

N1 - Funding Information: The authors would like to acknowledge beamtime at the Diamond Lightsource (Experiment EE19187–1, beamline I15) and the support from A. J. Smith during HPPXRD experiments. GK would like to thank the Fonds der chemischen Industrie for support through the Liebig fellowship Scheme and financial support from the DFG through a COORNET SPP1928 start up grant. PV gratefully acknowledges financial support by the DFG within the research unit FOR2433 “Switchable MOFs”. CLH gratefully acknowledges the University of Edinburgh for funding (Christina Miller Research Fellowship). Publisher Copyright: © 2019 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim

PY - 2019/7/18

Y1 - 2019/7/18

N2 - The zeolitic imidazolate framework ZIF-4 has recently been shown to exhibit large structural flexibility as a response to hydrostatic pressures, going from an open pore phase (ZIF-4(Zn)-op) to a closed pore phase (ZIF-4(Zn)-cp). The use of diamond anvil cell (DAC) setups has so far restricted thorough experimental insight into the evolution of lattice parameters at pressures below p < 0.1 GPa. Here we revisit the high-pressure properties of ZIF-4(Zn) by applying a new high-pressure powder X-ray diffraction setup that allows for tracking the evolution of lattice parameters in pressure increments as small as Δp = 0.005 GPa in the pressure range p = ambient – 0.4 GPa; a pressure resolution that cannot be achieved by using traditional DACs. We find ZIF-4(Zn) has a bulk modulus of K(ZIF-4(Zn)-op) = 2.01 ± 0.05 GPa and K(ZIF-4(Zn)-cp) = 4.39 ± 0.20 GPa, clarifying and confirming some ambiguous results that have been reported previously.

AB - The zeolitic imidazolate framework ZIF-4 has recently been shown to exhibit large structural flexibility as a response to hydrostatic pressures, going from an open pore phase (ZIF-4(Zn)-op) to a closed pore phase (ZIF-4(Zn)-cp). The use of diamond anvil cell (DAC) setups has so far restricted thorough experimental insight into the evolution of lattice parameters at pressures below p < 0.1 GPa. Here we revisit the high-pressure properties of ZIF-4(Zn) by applying a new high-pressure powder X-ray diffraction setup that allows for tracking the evolution of lattice parameters in pressure increments as small as Δp = 0.005 GPa in the pressure range p = ambient – 0.4 GPa; a pressure resolution that cannot be achieved by using traditional DACs. We find ZIF-4(Zn) has a bulk modulus of K(ZIF-4(Zn)-op) = 2.01 ± 0.05 GPa and K(ZIF-4(Zn)-cp) = 4.39 ± 0.20 GPa, clarifying and confirming some ambiguous results that have been reported previously.

KW - Bulk modulus

KW - Flexibility

KW - Flexible metal-organic frameworks

KW - High pressure

KW - Zinc

U2 - 10.1002/zaac.201900046

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AN - SCOPUS:85069876423

SN - 0044-2313

VL - 645

SP - 970

EP - 974

JO - Zeitschrift für anorganische und allgemeine Chemie (ZACC)

JF - Zeitschrift für anorganische und allgemeine Chemie (ZACC)

IS - 15

ER -

The Zeolitic Imidazolate Framework ZIF-4 under Low Hydrostatic Pressures

Abstract / Description of output

Keywords / Materials (for Non-textual outputs)

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