1
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Jędrzejowska K, Kobylarczyk J, Muzioł TM, Nowicka B, Jędrzejowski D, Matoga D, Gaweł B, Podgajny R. Exploring porosity in a flexible 3D organic-inorganic {ZnII3(4DPNDI)[W V(CN) 8] 2} coordination network. Chem Commun (Camb) 2024. [PMID: 39239696 DOI: 10.1039/d4cc03141e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/07/2024]
Abstract
A 2D cyanido-bridged architecture ZnII-[WV(CN)8]3- is smoothly pillared by N,N'-di-(4-pyridyl)-1,4,5,8-naphthalenetetracarboxydiimide (4DPNDI) into 3D hybrid porous coordination polymer (PCP) {ZnII3(DMA)6[WV(CN)8]2(4DPNDI)·8DMA}. It shows significant uptake of H2O, MeOH or CHCl3 vapours with easy regeneration to the native form, and breathing-type CO2 adsorption contrasting non-porosity towards N2, providing a new example of a highly flexible porous material.
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Affiliation(s)
- Katarzyna Jędrzejowska
- Faculty of Chemistry, Jagiellonian University in Krakow, Gronostajowa 2, 30-387 Kraków, Poland.
- Doctoral School of Exact and Natural Sciences, Jagiellonian University in Kraków, Prof. St. Łojasiewicza 11, 30-348 Kraków, Poland.
| | - Jedrzej Kobylarczyk
- Institute of Nuclear Physics PAN, Radzikowskiego 152, 31-342 Kraków, Poland.
| | - Tadeusz M Muzioł
- Faculty of Chemistry, Nicolaus Copernicus University in Toruń, Gagarina 7, 87-100 Toruń, Poland.
| | - Beata Nowicka
- Faculty of Chemistry, Jagiellonian University in Krakow, Gronostajowa 2, 30-387 Kraków, Poland.
| | - Damian Jędrzejowski
- Faculty of Chemistry, Jagiellonian University in Krakow, Gronostajowa 2, 30-387 Kraków, Poland.
- Doctoral School of Exact and Natural Sciences, Jagiellonian University in Kraków, Prof. St. Łojasiewicza 11, 30-348 Kraków, Poland.
| | - Dariusz Matoga
- Faculty of Chemistry, Jagiellonian University in Krakow, Gronostajowa 2, 30-387 Kraków, Poland.
| | | | - Robert Podgajny
- Faculty of Chemistry, Jagiellonian University in Krakow, Gronostajowa 2, 30-387 Kraków, Poland.
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2
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Li X, Sensharma D, Loots L, Geng S, Nikkhah SJ, Lin E, Bon V, Liu W, Wang Z, He T, Mukherjee S, Vandichel M, Kaskel S, Barbour LJ, Zhang Z, Zaworotko MJ. Reversible Phase Transformations in a Double-Walled Diamondoid Coordination Network with a Stepped Isotherm for Methane. J Am Chem Soc 2024; 146:18387-18395. [PMID: 38904843 PMCID: PMC11240251 DOI: 10.1021/jacs.4c03555] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/22/2024]
Abstract
Flexible metal-organic materials (FMOMs) with stepped isotherms can offer enhanced working capacity in storage applications such as adsorbed natural gas (ANG) storage. Unfortunately, whereas >1000 FMOMs are known, only a handful exhibit methane uptake of >150 cm3/cm3 at 65 atm and 298 K, conditions relevant to ANG. Here, we report a double-walled 2-fold interpenetrated diamondoid (dia) network, X-dia-6-Ni, [Ni2L4(μ-H2O)]n, comprising a new azo linker ligand, L- (L- = (E)-3-(pyridin-4-yldiazenyl)benzoate) and 8-connected dinuclear molecular building blocks. X-dia-6-Ni exhibited gas (CO2, N2, CH4) and liquid (C8 hydrocarbons)-induced reversible transformations between its activated narrow-pore β phase and γ, a large-pore phase with ca. 33% increase in unit cell volume. Single-crystal X-ray diffraction (SCXRD) studies of the as-synthesized phase α, β, and γ revealed that structural transformations were enabled by twisting of the azo moiety and/or deformation of the MBB. Further insight into these transformations was gained from variable temperature powder XRD and in situ variable pressure powder XRD. Low-temperature N2 and CO2 sorption revealed stepped Type F-II isotherms with saturation uptakes of 422 and 401 cm3/g, respectively. X-dia-6-Ni exhibited uptake of 200 cm3/cm3 (65 atm, 298 K) and a high CH4 working capacity of 166 cm3/cm3 (5-65 bar, 298 K, 33 cycles), the third highest value yet reported for an FMOM and the highest value for an FMOM with a Type F-II isotherm.
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Affiliation(s)
- Xia Li
- Department of Chemical Science, Bernal Institute, University of Limerick, Limerick V94 T9PX, Republic of Ireland
| | - Debobroto Sensharma
- Department of Chemical Science, Bernal Institute, University of Limerick, Limerick V94 T9PX, Republic of Ireland
| | - Leigh Loots
- Department of Chemistry and Polymer Science, Stellenbosch University, Matieland 7602, South Africa
| | - Shubo Geng
- College of Chemistry, Nankai University, Tianjin 300071, People's Republic of China
| | - Sousa Javan Nikkhah
- Department of Chemical Science, Bernal Institute, University of Limerick, Limerick V94 T9PX, Republic of Ireland
| | - En Lin
- College of Chemistry, Nankai University, Tianjin 300071, People's Republic of China
| | - Volodymyr Bon
- Faculty of Chemistry, Technische Universität Dresden, Bergstrasse 66, 01062 Dresden, Germany
| | - Wansheng Liu
- College of Chemistry, Nankai University, Tianjin 300071, People's Republic of China
| | - Zhifang Wang
- College of Chemistry, Nankai University, Tianjin 300071, People's Republic of China
| | - Tao He
- Department of Chemical Science, Bernal Institute, University of Limerick, Limerick V94 T9PX, Republic of Ireland
| | - Soumya Mukherjee
- Department of Chemical Science, Bernal Institute, University of Limerick, Limerick V94 T9PX, Republic of Ireland
| | - Matthias Vandichel
- Department of Chemical Science, Bernal Institute, University of Limerick, Limerick V94 T9PX, Republic of Ireland
| | - Stefan Kaskel
- Faculty of Chemistry, Technische Universität Dresden, Bergstrasse 66, 01062 Dresden, Germany
| | - Leonard J Barbour
- Department of Chemistry and Polymer Science, Stellenbosch University, Matieland 7602, South Africa
| | - Zhenjie Zhang
- College of Chemistry, Nankai University, Tianjin 300071, People's Republic of China
| | - Michael J Zaworotko
- Department of Chemical Science, Bernal Institute, University of Limerick, Limerick V94 T9PX, Republic of Ireland
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3
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Li X, Bezrukov AA, Graham W, Sensharma D, Kong XJ, Thonhauser T, Zaworotko MJ. Modulation of Water Vapor Sorption by Pore Engineering in Isostructural Square Lattice Topology Coordination Networks. ACS APPLIED MATERIALS & INTERFACES 2024; 16:34402-34408. [PMID: 38902851 PMCID: PMC11232023 DOI: 10.1021/acsami.4c06412] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/19/2024] [Revised: 06/07/2024] [Accepted: 06/11/2024] [Indexed: 06/22/2024]
Abstract
We report a crystal-engineering study conducted upon a platform of three mixed-linker square lattice (sql) coordination networks of general formula [Zn(Ria)(bphy)] [bphy = 1,2-bis(pyridin-4-yl)hydrazine, H2Ria = 5-position-substituted isophthalic acid, and R = -Br, -NO2, and -OH; compounds 1-3]. Analysis of single-crystal X-ray diffraction data of 1-2 and the simulated crystal structure of 3 revealed that 1-3 are isomorphous and sustained by bilayers of sql networks linked by hydrogen bonds. Although similar pore shapes and sizes exist in 1-3, distinct isotherm shapes (linear and S shape) and uptakes (2.4, 11.6, and 13.3 wt %, respectively) were observed. Ab initio calculations indicated that the distinct water sorption properties can be attributed to the R groups, which offer a range of hydrophilicity. Calculations indicated that the significantly lower experimental uptake in compound 1 can be attributed to a constricted channel. The calculated water-binding sites provide insights into how adsorbed water molecules bond to the pore walls, with the strongest interactions, water-hydroxyl hydrogen bonding, observed for 3. Overall, this study reveals how pore engineering can result in large variations in water sorption properties in an isomorphous family of rigid porous coordination networks.
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Affiliation(s)
- Xia Li
- Department
of Chemical Science, Bernal Institute, University
of Limerick, Limerick V94 T9PX, Republic
of Ireland
| | - Andrey A. Bezrukov
- Department
of Chemical Science, Bernal Institute, University
of Limerick, Limerick V94 T9PX, Republic
of Ireland
| | - Wells Graham
- Department
of Physics and Center for Functional Materials, Wake Forest University, Winston–Salem, North Carolina 27109, United States
| | - Debobroto Sensharma
- Department
of Chemical Science, Bernal Institute, University
of Limerick, Limerick V94 T9PX, Republic
of Ireland
| | - Xiang-Jing Kong
- Department
of Chemical Science, Bernal Institute, University
of Limerick, Limerick V94 T9PX, Republic
of Ireland
| | - Timo Thonhauser
- Department
of Physics and Center for Functional Materials, Wake Forest University, Winston–Salem, North Carolina 27109, United States
| | - Michael J. Zaworotko
- Department
of Chemical Science, Bernal Institute, University
of Limerick, Limerick V94 T9PX, Republic
of Ireland
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4
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Subanbekova A, Bezrukov AA, Bon V, Nikolayenko VI, Koupepidou K, Sensharma D, Javan Nikkhah S, Wang SQ, Kaskel S, Vandichel M, Zaworotko MJ. Effect of Polymorphism on the Sorption Properties of a Flexible Square-Lattice Topology Coordination Network. ACS APPLIED MATERIALS & INTERFACES 2024; 16. [PMID: 38666365 PMCID: PMC11082895 DOI: 10.1021/acsami.4c03777] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/06/2024] [Revised: 04/13/2024] [Accepted: 04/16/2024] [Indexed: 05/12/2024]
Abstract
The stimulus-responsive behavior of coordination networks (CNs), which switch between closed (nonporous) and open (porous) phases, is of interest because of its potential utility in gas storage and separation. Herein, we report two polymorphs of a new square-lattice (sql) topology CN, X-sql-1-Cu, of formula [Cu(Imibz)2]n (HImibz = {[4-(1H-imidazol-1-yl)phenylimino]methyl}benzoic acid), isolated from the as-synthesized CN X-sql-1-Cu-(MeOH)2·2MeOH, which subsequently transformed to a narrow pore solvate, X-sql-1-Cu-A·MeOH, upon mild activation (drying in air or heating at 333 K under nitrogen). X-sql-1-Cu-A·MeOH contains MeOH in cavities, which was removed through exposure to vacuum for 2 h, yielding the nonporous (closed) phase X-sql-1-Cu-A. In contrast, a more dense polymorph, X-sql-1-Cu-B, was obtained by exposing X-sql-1-Cu-(MeOH)2·2MeOH directly to vacuum for 2 h. Gas sorption studies conducted on X-sql-1-Cu-A and X-sql-1-Cu-B revealed different switching behaviors to two open phases (X-sql-1-Cu·CO2 and X-sql-1-Cu·C2H2), with different gate-opening threshold pressures for CO2 at 195 K and C2H2 at 278 K. Coincident CO2 sorption and in situ powder X-ray diffraction studies at 195 K revealed that X-sql-1-Cu-A transformed to X-sql-1-Cu-B after the first sorption cycle and that the CO2-induced switching transformation was thereafter reversible. The results presented herein provide insights into the relationship between two polymorphs of a CN and the effect of polymorphism upon gas sorption properties. To the best of our knowledge, whereas sql networks such as X-sql-1-Cu are widely studied in terms of their structural and sorption properties, this study represents only the second example of an in-depth study of the sorption properties of polymorphic sql networks.
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Affiliation(s)
- Aizhamal Subanbekova
- Department
of Chemical Sciences, Bernal Institute, University of Limerick, Limerick V94 T9PX, Republic
of Ireland
| | - Andrey A. Bezrukov
- Department
of Chemical Sciences, Bernal Institute, University of Limerick, Limerick V94 T9PX, Republic
of Ireland
| | - Volodymyr Bon
- Faculty
of Chemistry, Technische Universität
Dresden, Bergstrasse 66, Dresden 01062, Germany
| | - Varvara I. Nikolayenko
- Department
of Chemical Sciences, Bernal Institute, University of Limerick, Limerick V94 T9PX, Republic
of Ireland
| | - Kyriaki Koupepidou
- Department
of Chemical Sciences, Bernal Institute, University of Limerick, Limerick V94 T9PX, Republic
of Ireland
| | - Debobroto Sensharma
- Department
of Chemical Sciences, Bernal Institute, University of Limerick, Limerick V94 T9PX, Republic
of Ireland
| | - Sousa Javan Nikkhah
- Department
of Chemical Sciences, Bernal Institute, University of Limerick, Limerick V94 T9PX, Republic
of Ireland
| | - Shi-Qiang Wang
- Department
of Chemical Sciences, Bernal Institute, University of Limerick, Limerick V94 T9PX, Republic
of Ireland
- Institute
of Materials Research and Engineering (IMRE), Agency for Science, Technology and Research (A*STAR), 2 Fusionopolis Way, Singapore 138634, Singapore
| | - Stefan Kaskel
- Faculty
of Chemistry, Technische Universität
Dresden, Bergstrasse 66, Dresden 01062, Germany
| | - Matthias Vandichel
- Department
of Chemical Sciences, Bernal Institute, University of Limerick, Limerick V94 T9PX, Republic
of Ireland
| | - Michael J. Zaworotko
- Department
of Chemical Sciences, Bernal Institute, University of Limerick, Limerick V94 T9PX, Republic
of Ireland
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5
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Cheng Y, Tang WQ, Geng LT, Xu M, Zhu JP, Meng SS, Gu ZY. Polar alcohol guest molecules regulate the stacking modes of 2-D MOF nanosheets. Chem Sci 2024; 15:4106-4113. [PMID: 38487231 PMCID: PMC10935662 DOI: 10.1039/d3sc06844g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2023] [Accepted: 02/07/2024] [Indexed: 03/17/2024] Open
Abstract
The modulation of two-dimensional metal-organic framework (2-D MOF) nanosheet stacking is an effective means to improve the properties and promote the application of nanosheets in various fields. Here, we employed a series of alcohol guest molecules (MeOH, EtOH and PrOH) to modulate Zr-BTB (BTB = benzene-1,3,5-tribenzoate) nanosheets and to generate untwisted stacking. The distribution of stacking angles was statistically analyzed from high-angle annular dark-field (HAADF) and fast Fourier transform (FFT) images. The ratios of untwisted stacking were calculated, such as 77.01% untwisted stacking for MeOH, 83.45% for EtOH, and 85.61% for PrOH. The obtained untwisted Zr-BTB showed good separation abilities for different substituted benzene isomers, superior para selectivity and excellent column stability and reusability. Control experiments of 2-D Zr-TCA (TCA = 4,4',4''-tricarboxytriphenylamine) and Zr-TATB (TATB = 4,4',4''-(1,3,5-triazine-2,4,6-triyl)tribenzoic acid) nanosheets with similar pore sizes and stronger polarity regulated by the alcohol guests exhibited moderate separation performance. The electron microscopy images revealed that polar alcohol regulation dominantly generated the twisted stacking of Zr-TCA and Zr-TATB with various Moiré patterns. Polar guest molecules, such as alcohols, provide strong host-guest interactions during the regulation of MOF nanosheet stacking, providing an opportunity to design new porous Moiré materials with application prospects.
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Affiliation(s)
- Yue Cheng
- Jiangsu Key Laboratory of Biofunctional Materials, Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, Jiangsu Key Laboratory of New Power Batteries, School of Chemistry and Materials Science, Nanjing Normal University Nanjing 210023 China
| | - Wen-Qi Tang
- Jiangsu Key Laboratory of Biofunctional Materials, Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, Jiangsu Key Laboratory of New Power Batteries, School of Chemistry and Materials Science, Nanjing Normal University Nanjing 210023 China
| | - Lu-Ting Geng
- Jiangsu Key Laboratory of Biofunctional Materials, Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, Jiangsu Key Laboratory of New Power Batteries, School of Chemistry and Materials Science, Nanjing Normal University Nanjing 210023 China
| | - Ming Xu
- Jiangsu Key Laboratory of Biofunctional Materials, Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, Jiangsu Key Laboratory of New Power Batteries, School of Chemistry and Materials Science, Nanjing Normal University Nanjing 210023 China
| | - Jian-Ping Zhu
- Jiangsu Key Laboratory of Biofunctional Materials, Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, Jiangsu Key Laboratory of New Power Batteries, School of Chemistry and Materials Science, Nanjing Normal University Nanjing 210023 China
| | - Sha-Sha Meng
- Jiangsu Key Laboratory of Biofunctional Materials, Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, Jiangsu Key Laboratory of New Power Batteries, School of Chemistry and Materials Science, Nanjing Normal University Nanjing 210023 China
| | - Zhi-Yuan Gu
- Jiangsu Key Laboratory of Biofunctional Materials, Jiangsu Collaborative Innovation Center of Biomedical Functional Materials, Jiangsu Key Laboratory of New Power Batteries, School of Chemistry and Materials Science, Nanjing Normal University Nanjing 210023 China
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6
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Koupepidou K, Bezrukov AA, Castell DC, Sensharma D, Mukherjee S, Zaworotko MJ. Water vapour induced structural flexibility in a square lattice coordination network. Chem Commun (Camb) 2023; 59:13867-13870. [PMID: 37930365 DOI: 10.1039/d3cc04109c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2023]
Abstract
Herein, we introduce a new square lattice topology coordination network, sql-(1,3-bib)(ndc)-Ni, with three types of connection and detail its gas and vapour induced phase transformations. Exposure to humidity resulted in an S-shaped isotherm profile, suggesting potential utility of such materials as desiccants.
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Affiliation(s)
- Kyriaki Koupepidou
- Bernal Institute, Department of Chemical Sciences, University of Limerick, Limerick V94 T9PX, Republic of Ireland.
| | - Andrey A Bezrukov
- Bernal Institute, Department of Chemical Sciences, University of Limerick, Limerick V94 T9PX, Republic of Ireland.
| | - Dominic C Castell
- Bernal Institute, Department of Chemical Sciences, University of Limerick, Limerick V94 T9PX, Republic of Ireland.
| | - Debobroto Sensharma
- Bernal Institute, Department of Chemical Sciences, University of Limerick, Limerick V94 T9PX, Republic of Ireland.
| | - Soumya Mukherjee
- Bernal Institute, Department of Chemical Sciences, University of Limerick, Limerick V94 T9PX, Republic of Ireland.
| | - Michael J Zaworotko
- Bernal Institute, Department of Chemical Sciences, University of Limerick, Limerick V94 T9PX, Republic of Ireland.
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7
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Li X, Sensharma D, Koupepidou K, Kong XJ, Zaworotko MJ. The Effect of Pendent Groups upon Flexibility in Coordination Networks with Square Lattice Topology. ACS MATERIALS LETTERS 2023; 5:2567-2575. [PMID: 37680544 PMCID: PMC10481394 DOI: 10.1021/acsmaterialslett.3c00565] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/29/2023] [Accepted: 08/02/2023] [Indexed: 09/09/2023]
Abstract
Gas or vapor-induced phase transformations in flexible coordination networks (CNs) offer the potential to exceed the performance of their rigid counterparts for separation and storage applications. However, whereas ligand modification has been used to alter the properties of such stimulus-responsive materials, they remain understudied compared with their rigid counterparts. Here, we report that a family of Zn2+ CNs with square lattice (sql) topology, differing only through the substituents attached to a linker, exhibit variable flexibility. Structural and CO2 sorption studies on the sql networks, [Zn(5-Ria)(bphy)]n, ia = isophthalic acid, bphy = 1,2-bis(pyridin-4-yl)hydrazine, R = -CH3, -OCH3, -C(CH3)3, -N=N-Ph, and -N=N-Ph(CH3)2, 2-6, respectively, revealed that the substituent moieties influenced both structural and gas sorption properties. Whereas 2-3 exhibited rigidity, 4, 5, and 6 exhibited reversible transformation from small pore to large pore phases. Overall, the insight into the profound effect of pendent moieties of linkers upon phase transformations in this family of layered CNs should be transferable to other CN classes.
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Affiliation(s)
- Xia Li
- Department of Chemical Science,
Bernal Institute, University of Limerick, Limerick V94 T9PX, Republic of Ireland
| | - Debobroto Sensharma
- Department of Chemical Science,
Bernal Institute, University of Limerick, Limerick V94 T9PX, Republic of Ireland
| | - Kyriaki Koupepidou
- Department of Chemical Science,
Bernal Institute, University of Limerick, Limerick V94 T9PX, Republic of Ireland
| | - Xiang-Jing Kong
- Department of Chemical Science,
Bernal Institute, University of Limerick, Limerick V94 T9PX, Republic of Ireland
| | - Michael J. Zaworotko
- Department of Chemical Science,
Bernal Institute, University of Limerick, Limerick V94 T9PX, Republic of Ireland
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8
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Subanbekova A, Nikolayenko VI, Bezrukov AA, Sensharma D, Kumar N, O'Hearn DJ, Bon V, Wang SQ, Koupepidou K, Darwish S, Kaskel S, Zaworotko MJ. Water vapour and gas induced phase transformations in an 8-fold interpenetrated diamondoid metal-organic framework. JOURNAL OF MATERIALS CHEMISTRY. A 2023; 11:9691-9699. [PMID: 37153821 PMCID: PMC10153660 DOI: 10.1039/d3ta01574b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/15/2023] [Accepted: 04/17/2023] [Indexed: 05/10/2023]
Abstract
In this work, we report the synthesis, structural characterisation and sorption properties of an 8-fold interpenetrated diamondoid (dia) metal-organic framework (MOF) that is sustained by a new extended linker ligand, [Cd(Imibz)2], X-dia-2-Cd, HImibz or 2 = 4-((4-(1H-imidazol-1-yl)phenylimino)methyl)benzoic acid. X-dia-2-Cd was found to exhibit reversible single-crystal-to-single-crystal (SC-SC) transformations between four distinct phases: an as-synthesised (from N,N-dimethylformamide) wide-pore phase, X-dia-2-Cd-α; a narrow-pore phase, X-dia-2-Cd-β, formed upon exposure to water; a narrow-pore phase obtained by activation, X-dia-2-Cd-γ; a medium-pore CO2-loaded phase X-dia-2-Cd-δ. While the space group remained constant in the four phases, the cell volumes and calculated void space ranged from 4988.7 Å3 and 47% (X-dia-2-Cd-α), respectively, to 3200.8 Å3 and 9.1% (X-dia-2-Cd-γ), respectively. X-dia-2-Cd-γ also exhibited a water vapour-induced structural transformation to the water-loaded X-dia-2-Cd-β phase, resulting in an S-shaped sorption isotherm. The inflection point occurred at 18% RH with negligible hysteresis on the desorption profile. Water vapour temperature-humidity swing cycling (60% RH, 300 K to 0% RH, 333 K) indicated hydrolytic stability of X-dia-2-Cd and working capacity was retained after 128 cycles of sorbent regeneration. CO2 (at 195 K) was also observed to induce a structural transformation in X-dia-2-Cd-γ and in situ PXRD studies at 1 bar of CO2, 195 K revealed the formation of X-dia-2-Cd-δ, which exhibited 31% larger unit cell volume than X-dia-2-Cd-γ.
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Affiliation(s)
- Aizhamal Subanbekova
- Department of Chemical Sciences, Bernal Institute, University of Limerick Limerick V94 T9PX Republic of Ireland
| | - Varvara I Nikolayenko
- Department of Chemical Sciences, Bernal Institute, University of Limerick Limerick V94 T9PX Republic of Ireland
| | - Andrey A Bezrukov
- Department of Chemical Sciences, Bernal Institute, University of Limerick Limerick V94 T9PX Republic of Ireland
| | - Debobroto Sensharma
- Department of Chemical Sciences, Bernal Institute, University of Limerick Limerick V94 T9PX Republic of Ireland
| | - Naveen Kumar
- Department of Chemical Sciences, Bernal Institute, University of Limerick Limerick V94 T9PX Republic of Ireland
| | - Daniel J O'Hearn
- Department of Chemical Sciences, Bernal Institute, University of Limerick Limerick V94 T9PX Republic of Ireland
| | - Volodymyr Bon
- Faculty of Chemistry, Technische Universität Dresden Bergstrasse 66 01062 Dresden Germany
| | - Shi-Qiang Wang
- Department of Chemical Sciences, Bernal Institute, University of Limerick Limerick V94 T9PX Republic of Ireland
- Institute of Materials Research and Engineering (IMRE), Agency for Science, Technology and Research (ASTAR) 2 Fusionopolis Way 138634 Singapore
| | - Kyriaki Koupepidou
- Department of Chemical Sciences, Bernal Institute, University of Limerick Limerick V94 T9PX Republic of Ireland
| | - Shaza Darwish
- Department of Chemical Sciences, Bernal Institute, University of Limerick Limerick V94 T9PX Republic of Ireland
| | - Stefan Kaskel
- Faculty of Chemistry, Technische Universität Dresden Bergstrasse 66 01062 Dresden Germany
| | - Michael J Zaworotko
- Department of Chemical Sciences, Bernal Institute, University of Limerick Limerick V94 T9PX Republic of Ireland
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