1
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Castillo-Blas C, Chester AM, Keen DA, Bennett TD. Thermally activated structural phase transitions and processes in metal-organic frameworks. Chem Soc Rev 2024; 53:3606-3629. [PMID: 38426588 DOI: 10.1039/d3cs01105d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/02/2024]
Abstract
The structural knowledge of metal-organic frameworks is crucial to the understanding and development of new efficient materials for industrial implementation. This review classifies and discusses recent advanced literature reports on phase transitions that occur during thermal treatments on metal-organic frameworks and their characterisation. Thermally activated phase transitions and procceses are classified according to the temperaturatures at which they occur: high temperature (reversible and non-reversible) and low temperature. In addition, theoretical calculations and modelling approaches employed to better understand these structural phase transitions are also reviewed.
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Affiliation(s)
- Celia Castillo-Blas
- Department of Materials Science and Metallurgy, University of Cambridge, 27 Charles Babbage Road, Cambridge, CB30FS, UK.
| | - Ashleigh M Chester
- Department of Materials Science and Metallurgy, University of Cambridge, 27 Charles Babbage Road, Cambridge, CB30FS, UK.
| | - David A Keen
- ISIS Facility, Rutherford Appleton Laboratory, Harwell Campus, OX11 0DE, Didcot, Oxfordshire, UK
| | - Thomas D Bennett
- Department of Materials Science and Metallurgy, University of Cambridge, 27 Charles Babbage Road, Cambridge, CB30FS, UK.
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2
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Bassey EN, Seymour ID, Bocarsly JD, Keen DA, Pintacuda G, Grey CP. Superstructure and Correlated Na + Hopping in a Layered Mg-Substituted Sodium Manganate Battery Cathode are Driven by Local Electroneutrality. Chem Mater 2023; 35:10564-10583. [PMID: 38162043 PMCID: PMC10753809 DOI: 10.1021/acs.chemmater.3c02180] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/28/2023] [Revised: 11/15/2023] [Accepted: 11/16/2023] [Indexed: 01/03/2024]
Abstract
In this work, we present a variable-temperature 23Na NMR and variable-temperature and variable-frequency electron paramagnetic resonance (EPR) analysis of the local structure of a layered P2 Na-ion battery cathode material, Na0.67[Mg0.28Mn0.72]O2 (NMMO). For the first time, we elucidate the superstructure in this material by using synchrotron X-ray diffraction and total neutron scattering and show that this superstructure is consistent with NMR and EPR spectra. To complement our experimental data, we carry out ab initio calculations of the quadrupolar and hyperfine 23Na NMR shifts, the Na+ ion hopping energy barriers, and the EPR g-tensors. We also describe an in-house simulation script for modeling the effects of ionic mobility on variable-temperature NMR spectra and use our simulations to interpret the experimental spectra, available upon request. We find long-zigzag-type Na ordering with two different types of Na sites, one with high mobility and the other with low mobility, and reconcile the tendency toward Na+/vacancy ordering to the preservation of local electroneutrality. The combined magnetic resonance methodology for studying local paramagnetic environments from the perspective of electron and nuclear spins will be useful for examining the local structures of materials for devices.
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Affiliation(s)
- Euan N. Bassey
- Yusuf
Hamied Department of Chemistry, University
of Cambridge, Lensfield Road, Cambridge CB2 1EW, U.K.
| | - Ieuan D. Seymour
- Department
of Materials, Imperial College London, South Kensington Campus, London SW7 2AZ, U.K.
| | - Joshua D. Bocarsly
- Yusuf
Hamied Department of Chemistry, University
of Cambridge, Lensfield Road, Cambridge CB2 1EW, U.K.
| | - David A. Keen
- ISIS
Facility, STFC Rutherford Appleton Laboratory, Harwell Oxford Campus, Didcot OX11 0QX, U.K.
| | - Guido Pintacuda
- Centre
de RMN à Très Hauts Champs, UMR 5082 (CNRS/Université
Claude Bernard Lyon 1/Ecole Normale Supérieure de Lyon), University of Lyon, 69100 Villeurbanne, France
| | - Clare P. Grey
- Yusuf
Hamied Department of Chemistry, University
of Cambridge, Lensfield Road, Cambridge CB2 1EW, U.K.
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3
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Chester AM, Castillo-Blas C, Sajzew R, Rodrigues BP, Mas-Balleste R, Moya A, Snelson JE, Collins SM, Sapnik AF, Robertson GP, Irving DJM, Wondraczek L, Keen DA, Bennett TD. Structural insights into hybrid immiscible blends of metal-organic framework and sodium ultraphosphate glasses. Chem Sci 2023; 14:11737-11748. [PMID: 37920351 PMCID: PMC10619634 DOI: 10.1039/d3sc02305b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2023] [Accepted: 09/09/2023] [Indexed: 11/04/2023] Open
Abstract
Recently, increased attention has been focused on amorphous metal-organic frameworks (MOFs) and, more specifically, MOF glasses, the first new glass category discovered since the 1970s. In this work, we explore the fabrication of a compositional series of hybrid blends, the first example of blending a MOF and inorganic glass. We combine ZIF-62(Zn) glass and an inorganic glass, 30Na2O-70P2O5, to combine the chemical versatility of the MOF glass with the mechanical properties of the inorganic glass. We investigate the interfacial interactions between the two components using pair distribution function analysis and solid state NMR spectroscopy, and suggest potential interactions between the two phases. Thermal analysis of the blend samples indicated that they were less thermally stable than the starting materials and had a Tg shifted relative to the pristine materials. Annular dark field scanning transmission electron microscopy tomography, X-ray energy dispersive spectroscopy (EDS), nanoindentation and 31P NMR all indicated close mixing of the two phases, suggesting the formation of immiscible blends.
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Affiliation(s)
- Ashleigh M Chester
- Department of Materials Science and Metallurgy, University of Cambridge Cambridge CB3 0FS UK
| | - Celia Castillo-Blas
- Department of Materials Science and Metallurgy, University of Cambridge Cambridge CB3 0FS UK
| | - Roman Sajzew
- Otto Schott Institute Materials Research, University of Jena Fraunhoferstrasse 6 07743 Jena Germany
| | - Bruno P Rodrigues
- Otto Schott Institute Materials Research, University of Jena Fraunhoferstrasse 6 07743 Jena Germany
| | - Ruben Mas-Balleste
- Department of Inorganic Chemistry, Universidad Autónoma de Madrid 28049 Madrid Spain
- Institute for Advanced Research in Chemical Sciences (IAdChem), Universidad Autónoma de Madrid 28049 Madrid Spain
| | - Alicia Moya
- Department of Inorganic Chemistry, Universidad Autónoma de Madrid 28049 Madrid Spain
| | - Jessica E Snelson
- School of Chemical and Process Engineering, School of Chemistry, Bragg Centre for Materials Research, University of Leeds Woodhouse Lane LS2 9JT UK
| | - Sean M Collins
- School of Chemical and Process Engineering, School of Chemistry, Bragg Centre for Materials Research, University of Leeds Woodhouse Lane LS2 9JT UK
| | - Adam F Sapnik
- Department of Materials Science and Metallurgy, University of Cambridge Cambridge CB3 0FS UK
| | - Georgina P Robertson
- Department of Materials Science and Metallurgy, University of Cambridge Cambridge CB3 0FS UK
- Diamond Light Source Ltd Diamond House, Harwell Campus, Didcot, Oxfordshire OX11 0DE UK
| | - Daniel J M Irving
- Diamond Light Source Ltd Diamond House, Harwell Campus, Didcot, Oxfordshire OX11 0DE UK
| | - Lothar Wondraczek
- Otto Schott Institute Materials Research, University of Jena Fraunhoferstrasse 6 07743 Jena Germany
| | - David A Keen
- ISIS Facility, Rutherford Appleton Laboratory Harwell Campus, Didcot, Oxfordshire OX11 0QX UK
| | - Thomas D Bennett
- Department of Materials Science and Metallurgy, University of Cambridge Cambridge CB3 0FS UK
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4
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Jabbour R, Ashling CW, Robinson TC, Khan AH, Wisser D, Berruyer P, Ghosh AC, Ranscht A, Keen DA, Brunner E, Canivet J, Bennett TD, Mellot-Draznieks C, Lesage A, Wisser FM. Unravelling the Molecular Structure and Confining Environment of an Organometallic Catalyst Heterogenized within Amorphous Porous Polymers. Angew Chem Int Ed Engl 2023; 62:e202310878. [PMID: 37647152 DOI: 10.1002/anie.202310878] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2023] [Revised: 08/30/2023] [Accepted: 08/30/2023] [Indexed: 09/01/2023]
Abstract
The catalytic activity of multifunctional, microporous materials is directly linked to the spatial arrangement of their structural building blocks. Despite great achievements in the design and incorporation of isolated catalytically active metal complexes within such materials, a detailed understanding of their atomic-level structure and the local environment of the active species remains a fundamental challenge, especially when these latter are hosted in non-crystalline organic polymers. Here, we show that by combining computational chemistry with pair distribution function analysis, 129 Xe NMR, and Dynamic Nuclear Polarization enhanced NMR spectroscopy, a very accurate description of the molecular structure and confining surroundings of a catalytically active Rh-based organometallic complex incorporated inside the cavity of amorphous bipyridine-based porous polymers is obtained. Small, but significant, differences in the structural properties of the polymers are highlighted depending on their backbone motifs.
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Affiliation(s)
- Ribal Jabbour
- Centre de RMN à Très Hauts Champs, Université de Lyon (CNRS/ENS Lyon/UCB Lyon 1), 69100, Villeurbanne, France
| | - Christopher W Ashling
- Department of Materials Science and Metallurgy, University of Cambridge, 27 Charles Babbage Road, Cambridge, CB3 0FS, UK
| | - Thomas C Robinson
- Centre de RMN à Très Hauts Champs, Université de Lyon (CNRS/ENS Lyon/UCB Lyon 1), 69100, Villeurbanne, France
| | - Arafat Hossain Khan
- Chair of Bioanalytical Chemistry, TU Dresden, Bergstraße 66, 01069, Dresden, Germany
| | - Dorothea Wisser
- Erlangen Center for Interface Research and Catalysis (ECRC), Friedrich-Alexander-Universität Erlangen-Nürnberg, Egerlandstraße 3, 91058, Erlangen, Germany
| | - Pierrick Berruyer
- Centre de RMN à Très Hauts Champs, Université de Lyon (CNRS/ENS Lyon/UCB Lyon 1), 69100, Villeurbanne, France
| | - Ashta C Ghosh
- Univ. Lyon, Université Claude Bernard Lyon 1, CNRS, IRCELYON - UMR 5256, 2 Avenue Albert Einstein, 69626, Villeurbanne Cedex, France
| | - Alisa Ranscht
- Univ. Lyon, Université Claude Bernard Lyon 1, CNRS, IRCELYON - UMR 5256, 2 Avenue Albert Einstein, 69626, Villeurbanne Cedex, France
| | - David A Keen
- ISIS Facility, Rutherford Appleton Laboratory, Harwell Campus, Didcot, Oxfordshire, OX11 0QX, UK
| | - Eike Brunner
- Chair of Bioanalytical Chemistry, TU Dresden, Bergstraße 66, 01069, Dresden, Germany
| | - Jérôme Canivet
- Univ. Lyon, Université Claude Bernard Lyon 1, CNRS, IRCELYON - UMR 5256, 2 Avenue Albert Einstein, 69626, Villeurbanne Cedex, France
| | - Thomas D Bennett
- Department of Materials Science and Metallurgy, University of Cambridge, 27 Charles Babbage Road, Cambridge, CB3 0FS, UK
| | - Caroline Mellot-Draznieks
- Laboratoire de Chimie des Processus Biologiques (LCPB), Collège de France, PSL Research University, CNRS Sorbonne Université, 11 Place Marcelin Berthelot, 75231, Paris Cedex 05, France
| | - Anne Lesage
- Centre de RMN à Très Hauts Champs, Université de Lyon (CNRS/ENS Lyon/UCB Lyon 1), 69100, Villeurbanne, France
| | - Florian M Wisser
- Erlangen Center for Interface Research and Catalysis (ECRC), Friedrich-Alexander-Universität Erlangen-Nürnberg, Egerlandstraße 3, 91058, Erlangen, Germany
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5
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Castillo-Blas C, Chester AM, Cosquer RP, Sapnik AF, Corti L, Sajzew R, Poletto-Rodrigues B, Robertson GP, Irving DJ, McHugh LN, Wondraczek L, Blanc F, Keen DA, Bennett TD. Interfacial Bonding between a Crystalline Metal-Organic Framework and an Inorganic Glass. J Am Chem Soc 2023; 145:22913-22924. [PMID: 37819708 PMCID: PMC10603780 DOI: 10.1021/jacs.3c04248] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2023] [Indexed: 10/13/2023]
Abstract
The interface within a composite is critically important for the chemical and physical properties of these materials. However, experimental structural studies of the interfacial regions within metal-organic framework (MOF) composites are extremely challenging. Here, we provide the first example of a new MOF composite family, i.e., using an inorganic glass matrix host in place of the commonly used organic polymers. Crucially, we also decipher atom-atom interactions at the interface. In particular, we dispersed a zeolitic imidazolate framework (ZIF-8) within a phosphate glass matrix and identified interactions at the interface using several different analysis methods of pair distribution function and multinuclear multidimensional magic angle spinning nuclear magnetic resonance spectroscopy. These demonstrated glass-ZIF atom-atom correlations. Additionally, carbon dioxide uptake and stability tests were also performed to check the increment of the surface area and the stability and durability of the material in different media. This opens up possibilities for creating new composites that include the intrinsic chemical properties of the constituent MOFs and inorganic glasses.
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Affiliation(s)
- Celia Castillo-Blas
- Department
of Materials Science and Metallurgy, University
of Cambridge, Cambridge CB3 0FS, U.K.
| | - Ashleigh M. Chester
- Department
of Materials Science and Metallurgy, University
of Cambridge, Cambridge CB3 0FS, U.K.
| | - Ronan P. Cosquer
- Department
of Chemistry, University of Liverpool, Crown Street, Liverpool L69 7ZD, U.K.
| | - Adam F. Sapnik
- Department
of Materials Science and Metallurgy, University
of Cambridge, Cambridge CB3 0FS, U.K.
| | - Lucia Corti
- Department
of Chemistry, University of Liverpool, Crown Street, Liverpool L69 7ZD, U.K.
- Leverhulme
Research Centre for Functional Materials Design, Materials Innovation
Factory, University of Liverpool, Liverpool L7 3NY, U.K.
| | - Roman Sajzew
- Otto
Schott Institute of Materials Research, University of Jena, Fraunhoferstrasse 6, 07743 Jena, Germany
| | - Bruno Poletto-Rodrigues
- Otto
Schott Institute of Materials Research, University of Jena, Fraunhoferstrasse 6, 07743 Jena, Germany
| | - Georgina P. Robertson
- Department
of Materials Science and Metallurgy, University
of Cambridge, Cambridge CB3 0FS, U.K.
- Diamond
Light Source Ltd., Diamond House, Harwell Campus, Didcot, Oxfordshire OX11 0QX, U.K.
| | - Daniel J.M. Irving
- Diamond
Light Source Ltd., Diamond House, Harwell Campus, Didcot, Oxfordshire OX11 0QX, U.K.
| | - Lauren N. McHugh
- Department
of Chemistry, University of Liverpool, Crown Street, Liverpool L69 7ZD, U.K.
| | - Lothar Wondraczek
- Otto
Schott Institute of Materials Research, University of Jena, Fraunhoferstrasse 6, 07743 Jena, Germany
| | - Frédéric Blanc
- Department
of Chemistry, University of Liverpool, Crown Street, Liverpool L69 7ZD, U.K.
- Leverhulme
Research Centre for Functional Materials Design, Materials Innovation
Factory, University of Liverpool, Liverpool L7 3NY, U.K.
- Stephenson
Institute for Renewable Energy, University of Liverpool, Crown Street, Liverpool L69 7ZF, U.K.
| | - David A. Keen
- ISIS
Facility, Rutherford Appleton Laboratory, Harwell Campus, Didcot, Oxfordshire OX11 0QX, U.K.
| | - Thomas D. Bennett
- Department
of Materials Science and Metallurgy, University
of Cambridge, Cambridge CB3 0FS, U.K.
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6
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Robertson GP, Mosca S, Castillo-Blas C, Son FA, Farha OK, Keen DA, Anzellini S, Bennett TD. Survival of Zirconium-Based Metal-Organic Framework Crystallinity at Extreme Pressures. Inorg Chem 2023. [PMID: 37326492 DOI: 10.1021/acs.inorgchem.2c04428] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Recent research on metal-organic frameworks (MOFs) has shown a shift from considering only the crystalline high-porosity phases to exploring their amorphous counterparts. Applying pressure to a crystalline MOF is a common method of amorphization, as MOFs contain large void spaces that can collapse, reducing the accessible surface area. This can be either a desired change or indeed an unwanted side effect of the application of pressure. In either case, understanding the MOF's pressure response is extremely important. Three such MOFs with varying pore sizes (UiO-66, MOF-808, and NU-1000) were investigated using in situ high-pressure X-ray diffraction and Raman spectroscopy. Partial crystallinity was observed in all three MOFs above 10 GPa, along with some recovery of crystallinity on return to ambient conditions if the frameworks were not compressed above thresholds of 13.3, 14.2, and 12.3 GPa for UiO-66, MOF-808, and NU-1000, respectively. This threshold was marked by an unexpected increase in one or more lattice parameters with pressure in all MOFs. Comparison of compressibility between MOFs suggests penetration of the pressure-transmitting oil into MOF-808 and NU-1000. The survival of some crystallinity above 10 GPa in all of these MOFs despite their differing pore sizes and extents of oil penetration demonstrates the importance of high-pressure characterization of known structures.
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Affiliation(s)
- Georgina P Robertson
- Department of Materials Science and Metallurgy, University of Cambridge, 27 Charles Babbage Road, Cambridge, Cambridgeshire CB3 0FS, U.K
- Diamond Light Source Ltd., Diamond House, Harwell Science and Innovation Campus, Didcot, Oxfordshire OX11 0DE, U.K
| | - Sara Mosca
- Central Laser Facility, STFC, Rutherford Appleton Laboratory, Harwell Science and Innovation Campus, Didcot, Oxfordshire OX11 0QX, U.K
| | - Celia Castillo-Blas
- Department of Materials Science and Metallurgy, University of Cambridge, 27 Charles Babbage Road, Cambridge, Cambridgeshire CB3 0FS, U.K
| | - Florencia A Son
- Department of Chemistry and International Institute of Nanotechnology, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
| | - Omar K Farha
- Department of Chemistry and International Institute of Nanotechnology, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
| | - David A Keen
- ISIS Facility, Rutherford Appleton Laboratory, Harwell Science and Innovation Campus, Didcot, Oxfordshire OX11 0QX, U.K
| | - Simone Anzellini
- Diamond Light Source Ltd., Diamond House, Harwell Science and Innovation Campus, Didcot, Oxfordshire OX11 0DE, U.K
| | - Thomas D Bennett
- Department of Materials Science and Metallurgy, University of Cambridge, 27 Charles Babbage Road, Cambridge, Cambridgeshire CB3 0FS, U.K
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7
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León-Alcaide L, Christensen RS, Keen DA, Jordá JL, Brotons-Alcázar I, Forment-Aliaga A, Mínguez Espallargas G. Meltable, Glass-Forming, Iron Zeolitic Imidazolate Frameworks. J Am Chem Soc 2023; 145:11258-11264. [PMID: 37158707 DOI: 10.1021/jacs.3c01455] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/10/2023]
Abstract
We describe the first meltable iron-based zeolitic imidazolate framework (ZIF), denoted MUV-24. This material, elusive from direct synthesis, is obtained from the thermal treatment of [Fe3(im)6(Him)2], which yields Fe(im)2 upon loss of the neutral imidazole molecules. Different crystalline phase transformations are observed upon further heating, until the material melts at 482 °C. Vitrification upon cooling of the liquid phase gives rise to the first Fe-metal-organic framework glass. X-ray total scattering experiments show that the tetrahedral environment of the crystalline solids is maintained in the glass, whereas nanoindentation measurements reveal an increase in Young's modulus, in agreement with stiffening upon vitrification.
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Affiliation(s)
- Luis León-Alcaide
- Instituto de Ciencia Molecular (ICMol), Universidad de Valencia, c/ Catedrático José Beltrán, 2, 46980 Paterna, Spain
| | - Rasmus S Christensen
- Center for Integrated Materials Research, Department of Chemistry and iNANO, Aarhus University, Langelandsgade 140, 8000 Aarhus C, Denmark
| | - David A Keen
- ISIS Facility, Rutherford Appleton Laboratory, Harwell Campus, Didcot, Oxfordshire OX11 0QX, U.K
| | - José L Jordá
- Instituto de Tecnología Química (UPV-CSIC), Universitat Politècnica de València-Consejo Superior de Investigaciones Científicas, Av. de los Naranjos s/n, 46022 Valencia, Spain
| | - Isaac Brotons-Alcázar
- Instituto de Ciencia Molecular (ICMol), Universidad de Valencia, c/ Catedrático José Beltrán, 2, 46980 Paterna, Spain
| | - Alicia Forment-Aliaga
- Instituto de Ciencia Molecular (ICMol), Universidad de Valencia, c/ Catedrático José Beltrán, 2, 46980 Paterna, Spain
| | - Guillermo Mínguez Espallargas
- Instituto de Ciencia Molecular (ICMol), Universidad de Valencia, c/ Catedrático José Beltrán, 2, 46980 Paterna, Spain
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8
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Bumstead AM, Castillo-Blas C, Pakamorė I, Thorne MF, Sapnik AF, Chester AM, Robertson G, Irving DJM, Chater PA, Keen DA, Forgan RS, Bennett TD. Formation of a meltable purinate metal-organic framework and its glass analogue. Chem Commun (Camb) 2023; 59:732-735. [PMID: 36541403 DOI: 10.1039/d2cc05314d] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The chemistries that can be incorporated within melt-quenched zeolitic imidazolate framework (ZIF) glasses are currently limited. Here we describe the preparation of a previously unknown purine-containing ZIF which we name ZIF-UC-7. We find that it melts and forms a glass at one of the lowest temperatures reported for 3D hybrid frameworks.
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Affiliation(s)
- Alice M Bumstead
- Department of Materials Science and Metallurgy, University of Cambridge, Cambridge, CB3 0FS, UK.
| | - Celia Castillo-Blas
- Department of Materials Science and Metallurgy, University of Cambridge, Cambridge, CB3 0FS, UK.
| | - Ignas Pakamorė
- WestCHEM, School of Chemistry, The University of Glasgow, University Avenue, Glasgow, G12 8QQ, UK
| | - Michael F Thorne
- Department of Materials Science and Metallurgy, University of Cambridge, Cambridge, CB3 0FS, UK.
| | - Adam F Sapnik
- Department of Materials Science and Metallurgy, University of Cambridge, Cambridge, CB3 0FS, UK.
| | - Ashleigh M Chester
- Department of Materials Science and Metallurgy, University of Cambridge, Cambridge, CB3 0FS, UK.
| | - Georgina Robertson
- Department of Materials Science and Metallurgy, University of Cambridge, Cambridge, CB3 0FS, UK.
| | - Daniel J M Irving
- Diamond Light Source Ltd, Diamond House, Harwell Campus, Didcot, Oxfordshire, OX11 0DE, UK
| | - Philip A Chater
- Diamond Light Source Ltd, Diamond House, Harwell Campus, Didcot, Oxfordshire, OX11 0DE, UK
| | - David A Keen
- ISIS Facility, Rutherford Appleton Laboratory, Harwell Campus, Didcot, Oxfordshire, OX11 0QX, UK
| | - Ross S Forgan
- WestCHEM, School of Chemistry, The University of Glasgow, University Avenue, Glasgow, G12 8QQ, UK
| | - Thomas D Bennett
- Department of Materials Science and Metallurgy, University of Cambridge, Cambridge, CB3 0FS, UK.
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9
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Laulainen JEM, Johnstone DN, Bogachev I, Longley L, Calahoo C, Wondraczek L, Keen DA, Bennett TD, Collins SM, Midgley PA. Mapping short-range order at the nanoscale in metal-organic framework and inorganic glass composites. Nanoscale 2022; 14:16524-16535. [PMID: 36285652 DOI: 10.1039/d2nr03791b] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Characterization of nanoscale changes in the atomic structure of amorphous materials is a profound challenge. Established X-ray and neutron total scattering methods typically provide sufficient signal quality only over macroscopic volumes. Pair distribution function analysis using electron scattering (ePDF) in the scanning transmission electron microscope (STEM) has emerged as a method of probing nanovolumes of these materials, but inorganic glasses as well as metal-organic frameworks (MOFs) and many other materials containing organic components are characteristically prone to irreversible changes after limited electron beam exposures. This beam sensitivity requires 'low-dose' data acquisition to probe inorganic glasses, amorphous and glassy MOFs, and MOF composites. Here, we use STEM-ePDF applied at low electron fluences (10 e- Å-2) combined with unsupervised machine learning methods to map changes in the short-range order with ca. 5 nm spatial resolution in a composite material consisting of a zeolitic imidazolate framework glass agZIF-62 and a 0.67([Na2O]0.9[P2O5])-0.33([AlO3/2][AlF3]1.5) inorganic glass. STEM-ePDF enables separation of MOF and inorganic glass domains from atomic structure differences alone, showing abrupt changes in atomic structure at interfaces with interatomic correlation distances seen in X-ray PDF preserved at the nanoscale. These findings underline that the average bulk amorphous structure is retained at the nanoscale in the growing family of MOF glasses and composites, a previously untested assumption in PDF analyses crucial for future non-crystalline nanostructure engineering.
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Affiliation(s)
- Joonatan E M Laulainen
- Department of Materials Science and Metallurgy, University of Cambridge, 27 Charles Babbage Road, Cambridge CB3 0FS, UK.
| | - Duncan N Johnstone
- Department of Materials Science and Metallurgy, University of Cambridge, 27 Charles Babbage Road, Cambridge CB3 0FS, UK.
| | - Ivan Bogachev
- Department of Materials Science and Metallurgy, University of Cambridge, 27 Charles Babbage Road, Cambridge CB3 0FS, UK.
| | - Louis Longley
- Department of Materials Science and Metallurgy, University of Cambridge, 27 Charles Babbage Road, Cambridge CB3 0FS, UK.
| | - Courtney Calahoo
- Otto Schott Institute of Materials Research, Friedrich Schiller University Jena, Fraunhoferstrasse 6, 07743 Jena, Germany
| | - Lothar Wondraczek
- Otto Schott Institute of Materials Research, Friedrich Schiller University Jena, Fraunhoferstrasse 6, 07743 Jena, Germany
| | - David A Keen
- ISIS Facility, Rutherford Appleton Laboratory, Harwell Campus, Didcot OX11 0QX, UK
| | - Thomas D Bennett
- Department of Materials Science and Metallurgy, University of Cambridge, 27 Charles Babbage Road, Cambridge CB3 0FS, UK.
| | - Sean M Collins
- Department of Materials Science and Metallurgy, University of Cambridge, 27 Charles Babbage Road, Cambridge CB3 0FS, UK.
- Bragg Centre for Materials Research, School of Chemical and Process Engineering and School of Chemistry, University of Leeds, Leeds LS2 9JT, UK.
| | - Paul A Midgley
- Department of Materials Science and Metallurgy, University of Cambridge, 27 Charles Babbage Road, Cambridge CB3 0FS, UK.
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10
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Bechis I, Sapnik AF, Tarzia A, Wolpert EH, Addicoat MA, Keen DA, Bennett TD, Jelfs KE. Modeling the Effect of Defects and Disorder in Amorphous Metal-Organic Frameworks. Chem Mater 2022; 34:9042-9054. [PMID: 36313398 PMCID: PMC9609304 DOI: 10.1021/acs.chemmater.2c01528] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/20/2022] [Revised: 09/29/2022] [Indexed: 05/26/2023]
Abstract
Amorphous metal-organic frameworks (aMOFs) are a class of disordered framework materials with a defined local order given by the connectivity between inorganic nodes and organic linkers, but absent long-range order. The rational development of function for aMOFs is hindered by our limited understanding of the underlying structure-property relationships in these systems, a consequence of the absence of long-range order, which makes experimental characterization particularly challenging. Here, we use a versatile modeling approach to generate in silico structural models for an aMOF based on Fe trimers and 1,3,5-benzenetricarboxylate (BTC) linkers, Fe-BTC. We build a phase space for this material that includes nine amorphous phases with different degrees of defects and local order. These models are analyzed through a combination of structural analysis, pore analysis, and pair distribution functions. Therefore, we are able to systematically explore the effects of the variation of each of these features, both in isolation and combined, for a disordered MOF system, something that would not be possible through experiment alone. We find that the degree of local order has a greater impact on structure and properties than the degree of defects. The approach presented here is versatile and allows for the study of different structural features and MOF chemistries, enabling the derivation of design rules for the rational development of aMOFs.
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Affiliation(s)
- Irene Bechis
- Department
of Chemistry, Imperial College London, Molecular Sciences Research Hub,
White City Campus, London W12 0BZ, U.K.
| | - Adam F. Sapnik
- Department
of Materials Science and Metallurgy, University
of Cambridge, Cambridge CB3 0FS, U.K.
| | - Andrew Tarzia
- Department
of Chemistry, Imperial College London, Molecular Sciences Research Hub,
White City Campus, London W12 0BZ, U.K.
| | - Emma H. Wolpert
- Department
of Chemistry, Imperial College London, Molecular Sciences Research Hub,
White City Campus, London W12 0BZ, U.K.
| | - Matthew A. Addicoat
- School
of Science and Technology, Nottingham Trent
University, Clifton Lane, Nottingham NG11 8NS, U.K.
| | - David A. Keen
- ISIS
Neutron and Muon Facility, Rutherford Appleton
Laboratory, Harwell Campus, Didcot, Oxfordshire OX11 0QX, U.K.
| | - Thomas D. Bennett
- Department
of Materials Science and Metallurgy, University
of Cambridge, Cambridge CB3 0FS, U.K.
| | - Kim E. Jelfs
- Department
of Chemistry, Imperial College London, Molecular Sciences Research Hub,
White City Campus, London W12 0BZ, U.K.
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11
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Chester AM, Castillo‐Blas C, Wondraczek L, Keen DA, Bennett TD. Materials Formed by Combining Inorganic Glasses and Metal‐Organic Frameworks. Chemistry 2022; 28:e202200345. [PMID: 35416352 PMCID: PMC9400909 DOI: 10.1002/chem.202200345] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2022] [Indexed: 11/08/2022]
Abstract
Here, we propose the combination of glassy or crystalline metal‐organic frameworks (MOFs) with inorganic glasses to create novel hybrid composites and blends.The motivation behind this new composite approach is to improve the processability issues and mechanical performance of MOFs, whilst maintaining their ubiquitous properties. Herein, the precepts of successful composite formation and pairing of MOF and glass MOFs with inorganic glasses are presented. Focus is also given to the synthetic routes to such materials and the challenges anticipated in both their production and characterisation. Depending on their chemical nature, materials are classified as crystalline MOF‐glass composites and blends. Additionally, the potential properties and applications of these two classes of materials are considered, the key aim being the retention of beneficial properties of both components, whilst circumventing their respective drawbacks.
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Affiliation(s)
- Ashleigh M. Chester
- Department of Materials Science and Metallurgy University of Cambridge 27 Charles Babbage Road CB3 0FS Cambridge UK
| | - Celia Castillo‐Blas
- Department of Materials Science and Metallurgy University of Cambridge 27 Charles Babbage Road CB3 0FS Cambridge UK
| | - Lothar Wondraczek
- Otto Schott Institute Materials Research University of Jena Fraunhoferstrasse 6 07743 Jena Germany
| | - David A. Keen
- ISIS Facility Rutherford Appleton Laboratory Harwell Campus OX11, 0DE, Didcot Oxfordshire UK
| | - Thomas D. Bennett
- Department of Materials Science and Metallurgy University of Cambridge 27 Charles Babbage Road CB3 0FS Cambridge UK
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12
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Chester AM, Castillo‐Blas C, Wondraczek L, Keen DA, Bennett TD. Frontispiece: Materials Formed by Combining Inorganic Glasses and Metal‐Organic Frameworks. Chemistry 2022. [DOI: 10.1002/chem.202283861] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Ashleigh M. Chester
- Department of Materials Science and Metallurgy University of Cambridge 27 Charles Babbage Road CB3 0FS Cambridge UK
| | - Celia Castillo‐Blas
- Department of Materials Science and Metallurgy University of Cambridge 27 Charles Babbage Road CB3 0FS Cambridge UK
| | - Lothar Wondraczek
- Otto Schott Institute Materials Research University of Jena Fraunhoferstrasse 6 07743 Jena Germany
| | - David A. Keen
- ISIS Facility Rutherford Appleton Laboratory Harwell Campus OX11, 0DE, Didcot Oxfordshire UK
| | - Thomas D. Bennett
- Department of Materials Science and Metallurgy University of Cambridge 27 Charles Babbage Road CB3 0FS Cambridge UK
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13
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Zhang S, Qin Y, Zhang S, Gao M, Tucker MG, Keen DA, Cai G, Phillips AE, Dove MT. Orientational disorder in sulfur hexafluoride: a neutron total scattering and reverse Monte Carlo study. J Phys Condens Matter 2022; 34:295401. [PMID: 35483339 DOI: 10.1088/1361-648x/ac6b74] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/28/2022] [Accepted: 04/26/2022] [Indexed: 06/14/2023]
Abstract
The orientational disorder in crystalline sulfur hexafluoride, SF6, has been studied using a combination of neutron total scattering and the reverse Monte Carlo method. Analysis of the atomic configurations has shown the extent of the disorder through the evaluation of the S-F bond orientational distribution function, consistent with, but improving upon, the results of earlier neutron powder diffraction data. The correlations between orientations of neighbouring molecules have been studied through analysis of the distributions of F-F distances, showing that nearest-neighbour F-F close contacts are avoided, consistent with previous molecular dynamics simulation results. The results present a new case study of the application of neutron total scattering and the reverse Monte Carlo methods for the study of orientational disorder, where in this instance the disorder arises from orientational frustration rather than from a mismatch of molecular and site symmetries.
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Affiliation(s)
- Shidong Zhang
- College of Physics, Sichuan University, Chengdu, Sichuan 610065, People's Republic of China
| | - Yinze Qin
- College of Physics, Sichuan University, Chengdu, Sichuan 610065, People's Republic of China
| | - Sijie Zhang
- College of Physics, Sichuan University, Chengdu, Sichuan 610065, People's Republic of China
| | - Min Gao
- CrystalMaker Software Ltd, Centre for Innovation & Enterprise, Oxford University Begbroke Science Park, Woodstock Road, Begbroke, Oxfordshire, OX5 1PF, United Kingdom
- School of Physics and Astronomy, Queen Mary University of London, Mile End Road, London E1 4NS, United Kingdom
| | - Matthew G Tucker
- Oak Ridge National Laboratory, Neutron Scattering Division, 1 Bethel Valley Road, Oak Ridge, TN 37831, United States of America
| | - David A Keen
- ISIS Facility, Harwell Campus, Rutherford Appleton Laboratory, Didcot, OX11 0QX, United Kingdom
| | - Guanqun Cai
- College of Chemistry and Molecular Engineering, Peking University, Chengfu Road 292, Haidian District, Beijing 100871, People's Republic of China
| | - Anthony E Phillips
- School of Physics and Astronomy, Queen Mary University of London, Mile End Road, London E1 4NS, United Kingdom
| | - Martin T Dove
- School of Physics and Astronomy, Queen Mary University of London, Mile End Road, London E1 4NS, United Kingdom
- College of Computer Science, Sichuan University, Chengdu, Sichuan 610065, People's Republic of China
- Department of Physics, School of Sciences, Wuhan University of Technology, 205 Luoshi Road, Hongshan District, Wuhan, Hubei, 430070, People's Republic of China
- School of Mechanical Engineering, Dongguan University of Technology, 1st Daxue Road, Songshan Lake, Dongguan, Guangdong 523000, People's Republic of China
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14
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Yoon S, Talin AA, Stavila V, Mroz AM, Bennett TD, He Y, Keen DA, Hendon CH, Allendorf MD, So MC. Correction to "From n- to p-Type Material: Effect of Metal Ion on Charge Transport in Metal-Organic Materials". ACS Appl Mater Interfaces 2022; 14:19079. [PMID: 35420774 DOI: 10.1021/acsami.2c05799] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
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15
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Sapnik AF, Bechis I, Bumstead AM, Johnson T, Chater PA, Keen DA, Jelfs KE, Bennett TD. Multivariate analysis of disorder in metal-organic frameworks. Nat Commun 2022; 13:2173. [PMID: 35449202 PMCID: PMC9023516 DOI: 10.1038/s41467-022-29849-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2021] [Accepted: 03/30/2022] [Indexed: 12/04/2022] Open
Abstract
The rational design of disordered frameworks is an appealing route to target functional materials. However, intentional realisation of such materials relies on our ability to readily characterise and quantify structural disorder. Here, we use multivariate analysis of pair distribution functions to fingerprint and quantify the disorder within a series of compositionally identical metal–organic frameworks, possessing different crystalline, disordered, and amorphous structures. We find this approach can provide powerful insight into the kinetics and mechanism of structural collapse that links these materials. Our methodology is also extended to a very different system, namely the melting of a zeolitic imidazolate framework, to demonstrate the potential generality of this approach across many areas of disordered structural chemistry. Structural disorder in materials is challenging to characterise. Here, the authors use multivariate analysis of atomic pair distribution functions to study structural collapse and melting of metal–organic frameworks, revealing powerful mechanistic and kinetic insight.
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Affiliation(s)
- Adam F Sapnik
- Department of Materials Science and Metallurgy, University of Cambridge, Cambridge, CB3 0FS, UK
| | - Irene Bechis
- Department of Chemistry, Imperial College London, Molecular Sciences Research Hub, White City Campus, London, W12 0BZ, UK
| | - Alice M Bumstead
- Department of Materials Science and Metallurgy, University of Cambridge, Cambridge, CB3 0FS, UK
| | - Timothy Johnson
- Johnson Matthey Technology Centre, Blount's Court, Sonning Common, Reading, RG4 9NH, UK
| | - Philip A Chater
- Diamond Light Source Ltd, Diamond House, Harwell Campus, Didcot, Oxfordshire, OX11 0DE, UK
| | - David A Keen
- ISIS Neutron and Muon Facility, Rutherford Appleton Laboratory, Harwell Campus, Didcot, Oxfordshire, OX11 0QX, UK
| | - Kim E Jelfs
- Department of Chemistry, Imperial College London, Molecular Sciences Research Hub, White City Campus, London, W12 0BZ, UK
| | - Thomas D Bennett
- Department of Materials Science and Metallurgy, University of Cambridge, Cambridge, CB3 0FS, UK.
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16
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Bumstead A, Pakamorė I, Richards KD, Thorne MF, Boyadjieva SS, Castillo-Blas C, McHugh LN, Sapnik AF, Keeble DS, Keen DA, Evans RC, Forgan RS, Bennett TD. Post-Synthetic Modification of a Metal-Organic Framework Glass. Chem Mater 2022; 34:2187-2196. [PMID: 35578693 PMCID: PMC9100367 DOI: 10.1021/acs.chemmater.1c03820] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/04/2021] [Revised: 02/07/2022] [Indexed: 06/15/2023]
Abstract
Melt-quenched metal-organic framework (MOF) glasses have gained significant interest as the first new category of glass reported in 50 years. In this work, an amine-functionalized zeolitic imidazolate framework (ZIF), denoted ZIF-UC-6, was prepared and demonstrated to undergo both melting and glass formation. The presence of an amine group resulted in a lower melting temperature compared to other ZIFs, while also allowing material properties to be tuned by post-synthetic modification (PSM). As a prototypical example, the ZIF glass surface was functionalized with octyl isocyanate, changing its behavior from hydrophilic to hydrophobic. PSM therefore provides a promising strategy for tuning the surface properties of MOF glasses.
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Affiliation(s)
- Alice
M. Bumstead
- Department
of Materials Science and Metallurgy, University
of Cambridge, Cambridge CB3 0FS, U.K.
| | - Ignas Pakamorė
- WestCHEM,
School of Chemistry, The University of Glasgow, University Avenue, Glasgow G12 8QQ, U.K.
| | - Kieran D. Richards
- Department
of Materials Science and Metallurgy, University
of Cambridge, Cambridge CB3 0FS, U.K.
| | - Michael F. Thorne
- Department
of Materials Science and Metallurgy, University
of Cambridge, Cambridge CB3 0FS, U.K.
| | - Sophia S. Boyadjieva
- WestCHEM,
School of Chemistry, The University of Glasgow, University Avenue, Glasgow G12 8QQ, U.K.
| | - Celia Castillo-Blas
- Department
of Materials Science and Metallurgy, University
of Cambridge, Cambridge CB3 0FS, U.K.
| | - Lauren N. McHugh
- Department
of Materials Science and Metallurgy, University
of Cambridge, Cambridge CB3 0FS, U.K.
| | - Adam F. Sapnik
- Department
of Materials Science and Metallurgy, University
of Cambridge, Cambridge CB3 0FS, U.K.
| | - Dean S. Keeble
- Diamond
Light Source Ltd, Diamond
House, Harwell Campus, Didcot, Oxfordshire OX11 0DE, U.K.
| | - David A. Keen
- ISIS
Facility, Rutherford Appleton Laboratory, Harwell Campus, Didcot, Oxfordshire OX11
0QX, U.K.
| | - Rachel C. Evans
- Department
of Materials Science and Metallurgy, University
of Cambridge, Cambridge CB3 0FS, U.K.
| | - Ross S. Forgan
- WestCHEM,
School of Chemistry, The University of Glasgow, University Avenue, Glasgow G12 8QQ, U.K.
| | - Thomas D. Bennett
- Department
of Materials Science and Metallurgy, University
of Cambridge, Cambridge CB3 0FS, U.K.
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17
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Shaw BK, Castillo-Blas C, Thorne MF, Ríos Gómez ML, Forrest T, Lopez MD, Chater PA, McHugh LN, Keen DA, Bennett TD. Principles of melting in hybrid organic-inorganic perovskite and polymorphic ABX 3 structures. Chem Sci 2022; 13:2033-2042. [PMID: 35308849 PMCID: PMC8849004 DOI: 10.1039/d1sc07080k] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2021] [Accepted: 01/18/2022] [Indexed: 11/21/2022] Open
Abstract
Four novel dicyanamide-containing hybrid organic-inorganic ABX3 structures are reported, and the thermal behaviour of a series of nine perovskite and non-perovskite [AB(N(CN)2)3] (A = (C3H7)4N, (C4H9)4N, (C5H11)4N; B = Co, Fe, Mn) is analyzed. Structure-property relationships are investigated by varying both A-site organic and B-site transition metal cations. In particular, increasing the size of the A-site cation from (C3H7)4N → (C4H9)4N → (C5H11)4N was observed to result in a decrease in T m through an increase in ΔS f. Consistent trends in T m with metal replacement are observed with each A-site cation, with Co < Fe < Mn. The majority of the melts formed were found to recrystallise partially upon cooling, though glasses could be formed through a small degree of organic linker decomposition. Total scattering methods are used to provide a greater understanding of the melting mechanism.
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Affiliation(s)
- Bikash Kumar Shaw
- Department of Materials Science and Metallurgy, University of Cambridge CB3 0FS UK
| | - Celia Castillo-Blas
- Department of Materials Science and Metallurgy, University of Cambridge CB3 0FS UK .,Departamento de Química Inorgánica, Universidad Autónoma de Madrid 28049 Madrid Spain
| | - Michael F Thorne
- Department of Materials Science and Metallurgy, University of Cambridge CB3 0FS UK
| | | | - Tom Forrest
- Diamond Light Source Ltd, Diamond House, Harwell Campus Didcot Oxfordshire OX11 0DE UK
| | - Maria Diaz Lopez
- Diamond Light Source Ltd, Diamond House, Harwell Campus Didcot Oxfordshire OX11 0DE UK
| | - Philip A Chater
- Diamond Light Source Ltd, Diamond House, Harwell Campus Didcot Oxfordshire OX11 0DE UK
| | - Lauren N McHugh
- Department of Materials Science and Metallurgy, University of Cambridge CB3 0FS UK
| | - David A Keen
- ISIS Facility, Rutherford Appleton Laboratory, Harwell Campus Didcot Oxfordshire OX11 0QX UK
| | - Thomas D Bennett
- Department of Materials Science and Metallurgy, University of Cambridge CB3 0FS UK
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18
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Liu J, Du J, Phillips AE, Wyatt PB, Keen DA, Dove MT. Neutron powder diffraction study of the phase transitions in deuterated methylammonium lead iodide. J Phys Condens Matter 2022; 34:145401. [PMID: 35021159 DOI: 10.1088/1361-648x/ac4aa9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/14/2021] [Accepted: 01/12/2022] [Indexed: 06/14/2023]
Abstract
We report the results of a neutron powder diffraction study of the phase transitions in deuterated methylammonium lead iodide, with a focus on the system of orientational distortions of the framework of PbI6octahedra. The results are analysed in terms of symmetry-adapted lattice strains and normal mode distortions. The higher-temperature cubic-tetragonal phase transition at 327 K is weakly discontinuous and nearly tricritical. The variations of rotation angles and spontaneous strains with temperature are consistent with a standard Landau theory treatment. The lower-temperature transition to the orthorhombic phase at 165 K is discontinuous, with two systems of octahedral rotations and internal distortions that together can be described by 5 order parameters of different symmetry. In this paper we quantify the various symmetry-breaking distortions and their variation with temperature, together with their relationship to the spontaneous strains, within the formalism of Landau theory. A number of curious results in the low-temperature phase are identified, particularly regarding distortion amplitudes that decrease rather than increase with lowering temperature.
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Affiliation(s)
- Jiaxun Liu
- School of Physical and Chemical Sciences, Queen Mary University of London, Mile End Road, London, E1 4NS, United Kingdom
| | - Juan Du
- School of Physical and Chemical Sciences, Queen Mary University of London, Mile End Road, London, E1 4NS, United Kingdom
| | - Anthony E Phillips
- School of Physical and Chemical Sciences, Queen Mary University of London, Mile End Road, London, E1 4NS, United Kingdom
| | - Peter B Wyatt
- School of Physical and Chemical Sciences, Queen Mary University of London, Mile End Road, London, E1 4NS, United Kingdom
| | - David A Keen
- ISIS Facility, Rutherford Appleton Laboratory, Harwell Campus, Didcot, Oxfordshire, OX11 0QX, United Kingdom
| | - Martin T Dove
- School of Physical and Chemical Sciences, Queen Mary University of London, Mile End Road, London, E1 4NS, United Kingdom
- School of Computer Sciences, Sichuan University, No 24 South Section 1, Yihuan Road, Chengdu, 610065, People's Republic of China
- Department of Physics, School of Sciences, Wuhan University of Technology, 205 Luoshi Road, Hongshan District, Wuhan, Hubei, 430070, People's Republic of China
- School of Mechanical Engineering, Dongguan University of Technology, 1st Daxue Road, Songshan Lake, Dongguan, Guangdong 523000, People's Republic of China
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19
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Drago VN, Dajnowicz S, Parks JM, Blakeley MP, Keen DA, Coquelle N, Weiss KL, Gerlits O, Kovalevsky A, Mueser TC. An N⋯H⋯N low-barrier hydrogen bond preorganizes the catalytic site of aspartate aminotransferase to facilitate the second half-reaction. Chem Sci 2022; 13:10057-10065. [PMID: 36128223 PMCID: PMC9430417 DOI: 10.1039/d2sc02285k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2022] [Accepted: 07/20/2022] [Indexed: 11/21/2022] Open
Abstract
Pyridoxal 5′-phosphate (PLP)-dependent enzymes have been extensively studied for their ability to fine-tune PLP cofactor electronics to promote a wide array of chemistries. Neutron crystallography offers a straightforward approach to studying the electronic states of PLP and the electrostatics of enzyme active sites, responsible for the reaction specificities, by enabling direct visualization of hydrogen atom positions. Here we report a room-temperature joint X-ray/neutron structure of aspartate aminotransferase (AAT) with pyridoxamine 5′-phosphate (PMP), the cofactor product of the first half reaction catalyzed by the enzyme. Between PMP NSB and catalytic Lys258 Nζ amino groups an equally shared deuterium is observed in an apparent low-barrier hydrogen bond (LBHB). Density functional theory calculations were performed to provide further evidence of this LBHB interaction. The structural arrangement and the juxtaposition of PMP and Lys258, facilitated by the LBHB, suggests active site preorganization for the incoming ketoacid substrate that initiates the second half-reaction. The neutron structure of pyridoxal 5′-phosphate-dependent enzyme aspartate aminotransferase with pyridoxamine 5′-phosphate (PMP) reveals a low-barrier hydrogen bond between the amino groups of PMP and catalytic Lys258, preorganizing the active site for catalysis![]()
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Affiliation(s)
- Victoria N. Drago
- Department of Chemistry and Biochemistry, University of Toledo, Toledo, OH 43606, USA
- Neutron Scattering Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA
| | - Steven Dajnowicz
- Department of Chemistry and Biochemistry, University of Toledo, Toledo, OH 43606, USA
- Neutron Scattering Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA
| | - Jerry M. Parks
- Biosciences Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA
| | - Matthew P. Blakeley
- Large Scale Structures Group, Institut Laue–Langevin, 71 Avenue des Martyrs, 38000 Grenoble, France
| | - David A. Keen
- ISIS Facility, Rutherford Appleton Laboratory, Harwell Campus, Didcot, OX11 0QX, UK
| | - Nicolas Coquelle
- Large Scale Structures Group, Institut Laue–Langevin, 71 Avenue des Martyrs, 38000 Grenoble, France
| | - Kevin L. Weiss
- Neutron Scattering Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA
| | - Oksana Gerlits
- Department of Natural Sciences, Tennessee Wesleyan University, Athens, TN 37303, USA
| | - Andrey Kovalevsky
- Neutron Scattering Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA
| | - Timothy C. Mueser
- Department of Chemistry and Biochemistry, University of Toledo, Toledo, OH 43606, USA
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20
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Thorne MF, Castillo Blas C, McHugh LN, Bumstead AM, Robertson G, Sapnik A, Coates CS, Sayed FN, Grey CP, Keen DA, Etter M, da Silva I, Užarević K, Bennett TD. Formation of new crystalline qtz-[Zn(mIm)2] polymorph from amorphous ZIF-8. Chem Commun (Camb) 2022; 58:11949-11952. [DOI: 10.1039/d2cc04241j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The structure of a new ZIF-8 polymorph with quartz topology (qtz) is reported. This qtz-[Zn(mIm)2] phase was obtained by mechanically amorphising crystalline ZIF-8, before heating the resultant amorphous phase to...
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21
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Yoon S, Talin AA, Stavila V, Mroz AM, Bennett TD, He Y, Keen DA, Hendon CH, Allendorf MD, So MC. From n- to p-Type Material: Effect of Metal Ion on Charge Transport in Metal-Organic Materials. ACS Appl Mater Interfaces 2021; 13:52055-52062. [PMID: 34061490 DOI: 10.1021/acsami.1c09130] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
An intriguing new class of two-dimensional (2D) materials based on metal-organic frameworks (MOFs) has recently been developed that displays electrical conductivity, a rarity among these nanoporous materials. The emergence of conducting MOFs raises questions about their fundamental electronic properties, but few studies exist in this regard. Here, we present an integrated theory and experimental investigation to probe the effects of metal substitution on the charge transport properties of M-HITP, where M = Ni or Pt and HITP = 2,3,6,7,10,11-hexaiminotriphenylene. The results show that the identity of the M-HITP majority charge carrier can be changed without intentional introduction of electronically active dopants. We observe that the selection of the metal ion substantially affects charge transport. Using the known structure, Ni-HITP, we synthesized a new amorphous material, a-Pt-HITP, which although amorphous is nevertheless found to be porous upon desolvation. Importantly, this new material exhibits p-type charge transport behavior, unlike Ni-HITP, which displays n-type charge transport. These results demonstrate that both p- and n-type materials can be achieved within the same MOF topology through appropriate choice of the metal ion.
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Affiliation(s)
- Sungwon Yoon
- Department of Chemistry and Biochemistry, California State University Chico, Chico, California 95973, United States
- Department of Chemistry, University of Houston, Houston, Texas 77204, United States
| | - A Alec Talin
- Sandia National Laboratories, Livermore, California 94551, United States
| | - Vitalie Stavila
- Sandia National Laboratories, Livermore, California 94551, United States
| | - Austin M Mroz
- Department of Chemistry and Biochemistry, University of Oregon, Eugene, Oregon 97401, United States
| | - Thomas D Bennett
- Department of Materials Science and Metallurgy, University of Cambridge, Cambridge CB3 0FS, United Kingdom
| | - Yuping He
- Department of Chemistry, University of Houston, Houston, Texas 77204, United States
| | - David A Keen
- ISIS Facility, Rutherford Appleton Laboratory, Harwell Campus, Didcot OX11 0QX, United Kingdom
| | - Christopher H Hendon
- Department of Chemistry and Biochemistry, University of Oregon, Eugene, Oregon 97401, United States
| | - Mark D Allendorf
- Sandia National Laboratories, Livermore, California 94551, United States
| | - Monica C So
- Department of Chemistry and Biochemistry, California State University Chico, Chico, California 95973, United States
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22
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Qin Y, Zhang S, Zhang S, Tucker MG, Keen DA, Cai G, Phillips AE, Dove MT. Orientational order and phase transitions in deuterated methane: a neutron total scattering and reverse Monte Carlo study. J Phys Condens Matter 2021; 34:015401. [PMID: 34619662 DOI: 10.1088/1361-648x/ac2db8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/29/2021] [Accepted: 10/07/2021] [Indexed: 06/13/2023]
Abstract
We report a study of the orientational order and phase transitions in crystalline deuterated methane, carried out using neutron total scattering and the reverse Monte Carlo method. The resultant atomic configurations are consistent with the average structures obtained from Rietveld refinement of the powder diffraction data, but additionally enable us to determine the C-D bond orientational distribution functions (ODF) for the disordered molecules in the high-temperature phase, and for both ordered and disordered molecules in the intermediate-temperature phase. We show that this approach gives more accurate information than can been obtained from fitting a bond ODF to diffraction data. Given the resurgence of interest in orientationally-disordered crystals, we argue that the approach of total scattering with the RMC method provides a unique quantification of orientational order and disorder.
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Affiliation(s)
- Yinze Qin
- College of Physics, Sichuan University, Chengdu, Sichuan 610065, People's Republic of China
| | - Shidong Zhang
- College of Physics, Sichuan University, Chengdu, Sichuan 610065, People's Republic of China
| | - Sijie Zhang
- College of Physics, Sichuan University, Chengdu, Sichuan 610065, People's Republic of China
| | - Matthew G Tucker
- Oak Ridge National Laboratory, Neutron Scattering Division, 1 Bethel Valley Road, Oak Ridge, Tennessee 37831, United States of America
| | - David A Keen
- ISIS Facility, Harwell Campus, Chilton, Didcot, OX11 0QX, United Kingdom
| | - Guanqun Cai
- School of Physical and Chemical Sciences, Queen Mary University of London, Mile End Road, London E1 4NS, United Kingdom
| | - Anthony E Phillips
- School of Physical and Chemical Sciences, Queen Mary University of London, Mile End Road, London E1 4NS, United Kingdom
| | - Martin T Dove
- College of Computer Science, Sichuan University, Chengdu, Sichuan 610065, People's Republic of China
- Department of Physics, School of Sciences, Wuhan University of Technology, 205 Luoshi Road, Hongshan district, Wuhan, Hubei, 430070, People's Republic of China
- School of Mechanical Engineering Dongguan University of Technology, 1st Daxue Road, Songhan Lake, Dongguan, Guangdong 523000, People's Republic of China
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23
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Peterson PF, Keen DA. Erratum: Illustrated formalisms for total scattering data: a guide for new practitioners. Corrigendum and addendum. J Appl Crystallogr 2021; 54:1542-1545. [PMID: 34667455 PMCID: PMC8493628 DOI: 10.1107/s1600576721007664] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2021] [Accepted: 07/26/2021] [Indexed: 11/24/2022] Open
Abstract
Errors and ambiguities in the article by Peterson, Olds, McDonnell & Page [J. Appl. Cryst. (2021), 54, 317–332] are corrected and clarified, respectively. Errors and ambiguities in the article by Peterson, Olds, McDonnell & Page [J. Appl. Cryst. (2021), 54, 317–332] are corrected and clarified, respectively.
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Affiliation(s)
- Peter F Peterson
- Computer Science and Mathematics Division, Oak Ridge National Laboratory, Oak Ridge, TN, USA.,Neutron Scattering Division, Oak Ridge National Laboratory, Oak Ridge, TN, USA
| | - David A Keen
- ISIS Facility, Rutherford Appleton Laboratory, Harwell Campus, Didcot, Oxfordshire, United Kingdom
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24
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Gerlits O, Blakeley MP, Keen DA, Radić Z, Kovalevsky A. Room temperature crystallography of human acetylcholinesterase bound to a substrate analogue 4K-TMA: Towards a neutron structure. Curr Res Struct Biol 2021; 3:206-215. [PMID: 34541552 PMCID: PMC8435639 DOI: 10.1016/j.crstbi.2021.08.003] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2021] [Revised: 08/18/2021] [Accepted: 08/29/2021] [Indexed: 11/19/2022] Open
Abstract
Acetylcholinesterase (AChE) catalyzes hydrolysis of acetylcholine thereby terminating cholinergic nerve impulses for efficient neurotransmission. Human AChE (hAChE) is a target of nerve agent and pesticide organophosphorus compounds that covalently attach to the catalytic Ser203 residue. Reactivation of inhibited hAChE can be achieved with nucleophilic antidotes, such as oximes. Understanding structural and electrostatic (i.e. protonation states) determinants of the catalytic and reactivation processes is crucial to improve design of oxime reactivators. Here we report X-ray structures of hAChE conjugated with a reversible covalent inhibitor 4K-TMA (4K-TMA:hAChE) at 2.8 Å resolution and of 4K-TMA:hAChE conjugate with oxime reactivator methoxime, MMB4 (4K-TMA:hAChE:MMB4) at 2.6 Å resolution, both at physiologically relevant room temperature, as well as cryo-crystallographic structure of 4K-TMA:hAChE at 2.4 Å resolution. 4K-TMA acts as a substrate analogue reacting with the hydroxyl of Ser203 and generating a reversible tetrahedral hemiketal intermediate that closely resembles the first tetrahedral intermediate state during hAChE-catalyzed acetylcholine hydrolysis. Structural comparisons of room temperature with cryo-crystallographic structures of 4K-TMA:hAChE and published mAChE complexes with 4K-TMA, as well as the effect of MMB4 binding to the peripheral anionic site (PAS) of the 4K-TMA:hAChE complex, revealed only discrete, minor differences. The active center geometry of AChE, already highly evolved for the efficient catalysis, was thus indicative of only minor conformational adjustments to accommodate the tetrahedral intermediate in the hydrolysis of the neurotransmitter acetylcholine (ACh). To map protonation states in the hAChE active site gorge we collected 3.5 Å neutron diffraction data paving the way for obtaining higher resolution datasets that will be needed to determine locations of individual hydrogen atoms.
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Affiliation(s)
- Oksana Gerlits
- Department of Natural Sciences, Tennessee Wesleyan University, Athens, TN, 37303, USA
| | - Matthew P. Blakeley
- Large Scale Structures Group, Institut Laue–Langevin, 38000, Grenoble, France
| | - David A. Keen
- ISIS Facility, Rutherford Appleton Laboratory, Harwell Campus, Didcot, OX11 0QX, UK
| | - Zoran Radić
- Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California San Diego, La Jolla, CA, 92093-0751, USA
- Corresponding author.
| | - Andrey Kovalevsky
- Neutron Scattering Division, Oak Ridge National Laboratory, Oak Ridge, TN, 37831, USA
- Corresponding author.
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25
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Thorne MF, Sapnik AF, McHugh LN, Bumstead AM, Castillo-Blas C, Keeble DS, Diaz Lopez M, Chater PA, Keen DA, Bennett TD. Glassy behaviour of mechanically amorphised ZIF-62 isomorphs. Chem Commun (Camb) 2021; 57:9272-9275. [PMID: 34519299 DOI: 10.1039/d1cc03469c] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Zeolitic imidazolate frameworks (ZIFs) can be melt-quenched to form glasses. Here, we present an alternative route to glassy ZIFs via mechanically induced amorphisation. This approach allows various glassy ZIFs to be produced in under 30 minutes at room temperature, without the need for melt-quenching.
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Affiliation(s)
- Michael F Thorne
- Department of Materials Science and Metallurgy, University of Cambridge, 27 Charles Babbage Road, Cambridge, Cambridgeshire, CB3 0FS, UK.
| | - Adam F Sapnik
- Department of Materials Science and Metallurgy, University of Cambridge, 27 Charles Babbage Road, Cambridge, Cambridgeshire, CB3 0FS, UK.
| | - Lauren N McHugh
- Department of Materials Science and Metallurgy, University of Cambridge, 27 Charles Babbage Road, Cambridge, Cambridgeshire, CB3 0FS, UK.
| | - Alice M Bumstead
- Department of Materials Science and Metallurgy, University of Cambridge, 27 Charles Babbage Road, Cambridge, Cambridgeshire, CB3 0FS, UK.
| | - Celia Castillo-Blas
- Department of Materials Science and Metallurgy, University of Cambridge, 27 Charles Babbage Road, Cambridge, Cambridgeshire, CB3 0FS, UK.
| | - Dean S Keeble
- Diamond Light Source Ltd, Diamond House, Harwell Campus, Didcot, Oxfordshire, OX11 0DE, UK
| | - Maria Diaz Lopez
- Diamond Light Source Ltd, Diamond House, Harwell Campus, Didcot, Oxfordshire, OX11 0DE, UK
| | - Phillip A Chater
- Diamond Light Source Ltd, Diamond House, Harwell Campus, Didcot, Oxfordshire, OX11 0DE, UK
| | - David A Keen
- ISIS Facility, Rutherford Appleton Laboratory, Harwell Campus, Didcot, Oxfordshire, OX11 0QX, UK
| | - Thomas D Bennett
- Department of Materials Science and Metallurgy, University of Cambridge, 27 Charles Babbage Road, Cambridge, Cambridgeshire, CB3 0FS, UK.
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26
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Affiliation(s)
- David A. Keen
- ISIS Facility, Rutherford Appleton Laboratory, Harwell Campus, Didcot, Oxfordshire, UK
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27
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Shaw BK, Hughes AR, Ducamp M, Moss S, Debnath A, Sapnik AF, Thorne MF, McHugh LN, Pugliese A, Keeble DS, Chater P, Bermudez-Garcia JM, Moya X, Saha SK, Keen DA, Coudert FX, Blanc F, Bennett TD. Melting of hybrid organic-inorganic perovskites. Nat Chem 2021; 13:778-785. [PMID: 33972755 DOI: 10.1038/s41557-021-00681-7] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2020] [Accepted: 03/11/2021] [Indexed: 02/03/2023]
Abstract
Several organic-inorganic hybrid materials from the metal-organic framework (MOF) family have been shown to form stable liquids at high temperatures. Quenching then results in the formation of melt-quenched MOF glasses that retain the three-dimensional coordination bonding of the crystalline phase. These hybrid glasses have intriguing properties and could find practical applications, yet the melt-quench phenomenon has so far remained limited to a few MOF structures. Here we turn to hybrid organic-inorganic perovskites-which occupy a prominent position within materials chemistry owing to their functional properties such as ion transport, photoconductivity, ferroelectricity and multiferroicity-and show that a series of dicyanamide-based hybrid organic-inorganic perovskites undergo melting. Our combined experimental-computational approach demonstrates that, on quenching, they form glasses that largely retain their solid-state inorganic-organic connectivity. The resulting materials show very low thermal conductivities (~0.2 W m-1 K-1), moderate electrical conductivities (10-3-10-5 S m-1) and polymer-like thermomechanical properties.
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Affiliation(s)
- Bikash Kumar Shaw
- Department of Materials Science and Metallurgy, University of Cambridge, Cambridge, UK
| | - Ashlea R Hughes
- Department of Chemistry, University of Liverpool, Liverpool, UK
| | - Maxime Ducamp
- Chimie ParisTech, PSL University, CNRS, Institut de Recherche de Chimie Paris, Paris, France
| | - Stephen Moss
- Department of Chemistry, University of Liverpool, Liverpool, UK
| | - Anup Debnath
- School of Materials Sciences, Indian Association for the Cultivation of Science, Jadavpur, India
| | - Adam F Sapnik
- Department of Materials Science and Metallurgy, University of Cambridge, Cambridge, UK
| | - Michael F Thorne
- Department of Materials Science and Metallurgy, University of Cambridge, Cambridge, UK
| | - Lauren N McHugh
- Department of Materials Science and Metallurgy, University of Cambridge, Cambridge, UK
| | - Andrea Pugliese
- Department of Chemistry, University of Liverpool, Liverpool, UK
| | - Dean S Keeble
- Diamond Light Source Ltd, Diamond House, Harwell Campus, Didcot, UK
| | - Philip Chater
- Diamond Light Source Ltd, Diamond House, Harwell Campus, Didcot, UK
| | - Juan M Bermudez-Garcia
- Department of Materials Science and Metallurgy, University of Cambridge, Cambridge, UK.,University of A Coruna, QuiMolMat Group, Department of Chemistry, Faculty of Science and Advanced Scientific Research Center (CICA), Zapateira, Spain
| | - Xavier Moya
- Department of Materials Science and Metallurgy, University of Cambridge, Cambridge, UK
| | - Shyamal K Saha
- School of Materials Sciences, Indian Association for the Cultivation of Science, Jadavpur, India
| | - David A Keen
- ISIS Facility, Rutherford Appleton Laboratory, Harwell Campus, Didcot, UK
| | - François-Xavier Coudert
- Chimie ParisTech, PSL University, CNRS, Institut de Recherche de Chimie Paris, Paris, France
| | - Frédéric Blanc
- Department of Chemistry, University of Liverpool, Liverpool, UK.,Stephenson Institute for Renewable Energy, University of Liverpool, Liverpool, UK
| | - Thomas D Bennett
- Department of Materials Science and Metallurgy, University of Cambridge, Cambridge, UK.
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28
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Coates CS, Baise M, Schmutzler A, Simonov A, Makepeace JW, Seel AG, Smith RI, Playford HY, Keen DA, Siegel R, Senker J, Slater B, Goodwin AL. Spin-ice physics in cadmium cyanide. Nat Commun 2021; 12:2272. [PMID: 33859176 PMCID: PMC8050284 DOI: 10.1038/s41467-021-22515-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2020] [Accepted: 03/16/2021] [Indexed: 11/08/2022] Open
Abstract
Spin-ices are frustrated magnets that support a particularly rich variety of emergent physics. Typically, it is the interplay of magnetic dipole interactions, spin anisotropy, and geometric frustration on the pyrochlore lattice that drives spin-ice formation. The relevant physics occurs at temperatures commensurate with the magnetic interaction strength, which for most systems is 1-5 K. Here, we show that non-magnetic cadmium cyanide, Cd(CN)2, exhibits analogous behaviour to magnetic spin-ices, but does so on a temperature scale that is nearly two orders of magnitude greater. The electric dipole moments of cyanide ions in Cd(CN)2 assume the role of magnetic pseudospins, with the difference in energy scale reflecting the increased strength of electric vs magnetic dipolar interactions. As a result, spin-ice physics influences the structural behaviour of Cd(CN)2 even at room temperature.
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Affiliation(s)
- Chloe S Coates
- Department of Chemistry, University of Oxford, Inorganic Chemistry Laboratory, Oxford, UK
| | - Mia Baise
- Department of Chemistry, University College London, London, UK
| | | | - Arkadiy Simonov
- Department of Chemistry, University of Oxford, Inorganic Chemistry Laboratory, Oxford, UK
- Department of Materials, ETH Zurich, Zurich, Switzerland
| | - Joshua W Makepeace
- Department of Chemistry, University of Oxford, Inorganic Chemistry Laboratory, Oxford, UK
- School of Chemistry, University of Birmingham, Edgbaston, Birmingham, UK
| | - Andrew G Seel
- Department of Chemistry, University of Oxford, Inorganic Chemistry Laboratory, Oxford, UK
- Department of Physics and Astronomy, University College London, London, UK
| | - Ronald I Smith
- ISIS Facility, Rutherford Appleton Laboratory, Harwell Campus, Didcot, Oxfordshire, UK
| | - Helen Y Playford
- ISIS Facility, Rutherford Appleton Laboratory, Harwell Campus, Didcot, Oxfordshire, UK
| | - David A Keen
- ISIS Facility, Rutherford Appleton Laboratory, Harwell Campus, Didcot, Oxfordshire, UK
| | - Renée Siegel
- Anorganische Chemie III, University of Bayreuth, Bayreuth, Germany
| | - Jürgen Senker
- Anorganische Chemie III, University of Bayreuth, Bayreuth, Germany
| | - Ben Slater
- Department of Chemistry, University College London, London, UK.
| | - Andrew L Goodwin
- Department of Chemistry, University of Oxford, Inorganic Chemistry Laboratory, Oxford, UK.
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29
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Sapnik AF, Johnstone DN, Collins SM, Divitini G, Bumstead AM, Ashling CW, Chater PA, Keeble DS, Johnson T, Keen DA, Bennett TD. Stepwise collapse of a giant pore metal-organic framework. Dalton Trans 2021; 50:5011-5022. [PMID: 33877199 DOI: 10.1039/d1dt00881a] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Defect engineering is a powerful tool that can be used to tailor the properties of metal-organic frameworks (MOFs). Here, we incorporate defects through ball milling to systematically vary the porosity of the giant pore MOF, MIL-100 (Fe). We show that milling leads to the breaking of metal-linker bonds, generating additional coordinatively unsaturated metal sites, and ultimately causes amorphisation. Pair distribution function analysis shows the hierarchical local structure is partially retained, even in the amorphised material. We find that solvents can be used to stabilise the MIL-100 (Fe) framework against collapse, which leads to a substantial retention of porosity over the non-stabilised material.
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Affiliation(s)
- Adam F Sapnik
- Department of Materials Science and Metallurgy, University of Cambridge, Cambridge, CB3 0FS, UK.
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30
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Sapnik AF, Bechis I, Collins SM, Johnstone DN, Divitini G, Smith AJ, Chater PA, Addicoat MA, Johnson T, Keen DA, Jelfs KE, Bennett TD. Mixed hierarchical local structure in a disordered metal-organic framework. Nat Commun 2021; 12:2062. [PMID: 33824324 PMCID: PMC8024318 DOI: 10.1038/s41467-021-22218-9] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2020] [Accepted: 03/04/2021] [Indexed: 02/01/2023] Open
Abstract
Amorphous metal-organic frameworks (MOFs) are an emerging class of materials. However, their structural characterisation represents a significant challenge. Fe-BTC, and the commercial equivalent Basolite® F300, are MOFs with incredibly diverse catalytic ability, yet their disordered structures remain poorly understood. Here, we use advanced electron microscopy to identify a nanocomposite structure of Fe-BTC where nanocrystalline domains are embedded within an amorphous matrix, whilst synchrotron total scattering measurements reveal the extent of local atomic order within Fe-BTC. We use a polymerisation-based algorithm to generate an atomistic structure for Fe-BTC, the first example of this methodology applied to the amorphous MOF field outside the well-studied zeolitic imidazolate framework family. This demonstrates the applicability of this computational approach towards the modelling of other amorphous MOF systems with potential generality towards all MOF chemistries and connectivities. We find that the structures of Fe-BTC and Basolite® F300 can be represented by models containing a mixture of short- and medium-range order with a greater proportion of medium-range order in Basolite® F300 than in Fe-BTC. We conclude by discussing how our approach may allow for high-throughput computational discovery of functional, amorphous MOFs.
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Affiliation(s)
- Adam F Sapnik
- Department of Materials Science and Metallurgy, University of Cambridge, Cambridge, UK
| | - Irene Bechis
- Department of Chemistry, Imperial College London, Molecular Sciences Research Hub, White City Campus, London, UK
| | - Sean M Collins
- Department of Materials Science and Metallurgy, University of Cambridge, Cambridge, UK
- School of Chemical and Process Engineering & School of Chemistry, University of Leeds, Leeds, UK
| | - Duncan N Johnstone
- Department of Materials Science and Metallurgy, University of Cambridge, Cambridge, UK
| | - Giorgio Divitini
- Department of Materials Science and Metallurgy, University of Cambridge, Cambridge, UK
| | - Andrew J Smith
- Diamond Light Source Ltd, Diamond House, Harwell Campus, Didcot, Oxfordshire, UK
| | - Philip A Chater
- Diamond Light Source Ltd, Diamond House, Harwell Campus, Didcot, Oxfordshire, UK
| | - Matthew A Addicoat
- School of Science and Technology, Nottingham Trent University, Clifton Lane, Nottingham, UK
| | - Timothy Johnson
- Johnson Matthey Technology Centre, Blount's Court, Sonning Common, Reading, UK
| | - David A Keen
- ISIS Neutron and Muon Facility, Rutherford Appleton Laboratory, Harwell Campus, Didcot, Oxfordshire, UK
| | - Kim E Jelfs
- Department of Chemistry, Imperial College London, Molecular Sciences Research Hub, White City Campus, London, UK
| | - Thomas D Bennett
- Department of Materials Science and Metallurgy, University of Cambridge, Cambridge, UK.
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31
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Irving DJM, Keen DA, Light ME. Advantages of a curved image plate for rapid laboratory-based x-ray total scattering measurements: Application to pair distribution function analysis. Rev Sci Instrum 2021; 92:043107. [PMID: 34243411 DOI: 10.1063/5.0040694] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/15/2020] [Accepted: 04/07/2021] [Indexed: 06/13/2023]
Abstract
The analysis and interpretation of the pair distribution function (PDF), as derived from total scattering measurements, is still seen by many as a technique confined to central synchrotron and neutron facilities. This situation has begun to change with a rising visibility of total scattering experiments reported in mainstream scientific journals and the modification of an increasing number of laboratory diffractometers. However, the rigor required during data reduction and the complexities of data interpretation mean the technique is still very far from being routine. Herein, we report the first application of a large area curved image plate system based on a Rigaku SPIDER (R-AXIS RAPID II) equipped with an Ag tube for collecting data amenable to high quality PDF refinement/modeling of crystalline, amorphous, and liquid samples. The advantages of such a system are the large Q range available without scanning (routinely in excess of 20 Å-1) and the inherent properties of an image plate detector (single photon sensitivity, large dynamic range [1.05 × 106], and effectively zero noise). Data are collected and structural models refined for a number of standard materials including NIST 640f silicon for which a Rwp ≤ 0.12 value was obtained with data collected in 60 min (excluding background measurements). These and other data are discussed and compared to similar examples in the literature.
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Affiliation(s)
- Daniel J M Irving
- School of Chemistry, University of Southampton, Southampton SO17 1BJ, United Kingdom
| | - David A Keen
- ISIS Neutron and Muon Source, Science and Technology Facilities Council, Rutherford Appleton Laboratory, Harwell Campus, Didcot, Oxfordshire OX11 0QX, United Kingdom
| | - Mark E Light
- School of Chemistry, University of Southampton, Southampton SO17 1BJ, United Kingdom
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32
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Mukherjee P, Paddison JAM, Xu C, Ruff Z, Wildes AR, Keen DA, Smith RI, Grey CP, Dutton SE. Sample Dependence of Magnetism in the Next-Generation Cathode Material LiNi 0.8Mn 0.1Co 0.1O 2. Inorg Chem 2021; 60:263-271. [PMID: 33320647 DOI: 10.1021/acs.inorgchem.0c02899] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
We present a structural and magnetic study of two batches of polycrystalline LiNi0.8Mn0.1Co0.1O2 (commonly known as Li NMC 811), a Ni-rich Li ion battery cathode material, using elemental analysis, X-ray and neutron diffraction, magnetometry, and polarized neutron scattering measurements. We find that the samples, labeled S1 and S2, have the composition Li1-xNi0.9+x-yMnyCo0.1O2, with x = 0.025(2), y = 0.120(2) for S1 and x = 0.002(2), y = 0.094(2) for S2, corresponding to different concentrations of magnetic ions and excess Ni2+ in the Li+ layers. Both samples show a peak in the zero-field-cooled (ZFC) dc susceptibility at 8.0(2) K, but the temperature at which the ZFC and FC (field-cooled) curves deviate is substantially different: 64(2) K for S1 and 122(2) K for S2. The ac susceptibility measurements show that the transition for S1 shifts with frequency whereas no such shift is observed for S2 within the resolution of our measurements. Our results demonstrate the sample dependence of magnetic properties in Li NMC 811, consistent with previous reports on the parent material LiNiO2. We further establish that a combination of experimental techniques is necessary to accurately determine the chemical composition of next-generation battery materials with multiple cations.
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Affiliation(s)
- Paromita Mukherjee
- Department of Physics, University of Cambridge, JJ Thomson Avenue, Cambridge CB3 0HE, United Kingdom.,The Faraday Institution, Quad One, Harwell Science and Innovation Campus, Didcot OX11 0RA, United Kingdom
| | - Joseph A M Paddison
- Department of Physics, University of Cambridge, JJ Thomson Avenue, Cambridge CB3 0HE, United Kingdom.,Churchill College, University of Cambridge, Storey's Way, Cambridge CB3 0DS, United Kingdom.,Materials Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, United States
| | - Chao Xu
- The Faraday Institution, Quad One, Harwell Science and Innovation Campus, Didcot OX11 0RA, United Kingdom.,Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, United Kingdom
| | - Zachary Ruff
- The Faraday Institution, Quad One, Harwell Science and Innovation Campus, Didcot OX11 0RA, United Kingdom.,Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, United Kingdom
| | - Andrew R Wildes
- Institut Laue-Langevin, CS 20156, 38042 Cedex 9, Grenoble, France
| | - David A Keen
- ISIS Neutron and Muon Source, Rutherford Appleton Laboratory, Harwell Campus, Didcot OX11 0QX, United Kingdom
| | - Ronald I Smith
- ISIS Neutron and Muon Source, Rutherford Appleton Laboratory, Harwell Campus, Didcot OX11 0QX, United Kingdom
| | - Clare P Grey
- The Faraday Institution, Quad One, Harwell Science and Innovation Campus, Didcot OX11 0RA, United Kingdom.,Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, United Kingdom
| | - Siân E Dutton
- Department of Physics, University of Cambridge, JJ Thomson Avenue, Cambridge CB3 0HE, United Kingdom.,The Faraday Institution, Quad One, Harwell Science and Innovation Campus, Didcot OX11 0RA, United Kingdom
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33
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Longley L, Calahoo C, Limbach R, Xia Y, Tuffnell JM, Sapnik AF, Thorne MF, Keeble DS, Keen DA, Wondraczek L, Bennett TD. Metal-organic framework and inorganic glass composites. Nat Commun 2020; 11:5800. [PMID: 33199681 PMCID: PMC7669864 DOI: 10.1038/s41467-020-19598-9] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2020] [Accepted: 10/22/2020] [Indexed: 11/21/2022] Open
Abstract
Metal-organic framework (MOF) glasses have become a subject of interest as a distinct category of melt quenched glass, and have potential applications in areas such as ion transport and sensing. In this paper we show how MOF glasses can be combined with inorganic glasses in order to fabricate a new family of materials composed of both MOF and inorganic glass domains. We use an array of experimental techniques to propose the bonding between inorganic and MOF domains, and show that the composites produced are more mechanically pliant than the inorganic glass itself.
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Affiliation(s)
- Louis Longley
- Department of Materials Science and Metallurgy, University of Cambridge, Cambridge, CB3 0FS, UK
| | - Courtney Calahoo
- Otto Schott Institute of Materials Research, University of Jena, Fraunhoferstrasse 6, 07743, Jena, Germany
| | - René Limbach
- Otto Schott Institute of Materials Research, University of Jena, Fraunhoferstrasse 6, 07743, Jena, Germany
| | - Yang Xia
- Otto Schott Institute of Materials Research, University of Jena, Fraunhoferstrasse 6, 07743, Jena, Germany
| | - Joshua M Tuffnell
- Department of Materials Science and Metallurgy, University of Cambridge, Cambridge, CB3 0FS, UK
| | - Adam F Sapnik
- Department of Materials Science and Metallurgy, University of Cambridge, Cambridge, CB3 0FS, UK
| | - Michael F Thorne
- Department of Materials Science and Metallurgy, University of Cambridge, Cambridge, CB3 0FS, UK
| | - Dean S Keeble
- Diamond Light Source Ltd., Diamond House, Harwell Campus, Didcot, Oxfordshire OX11, 0DE, UK
| | - David A Keen
- ISIS Facility, Rutherford Appleton Laboratory, Harwell Campus, Didcot, Oxfordshire OX11, 0QX, UK
| | - Lothar Wondraczek
- Otto Schott Institute of Materials Research, University of Jena, Fraunhoferstrasse 6, 07743, Jena, Germany
| | - Thomas D Bennett
- Department of Materials Science and Metallurgy, University of Cambridge, Cambridge, CB3 0FS, UK.
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Affiliation(s)
- David A. Keen
- ISIS Facility, Rutherford Appleton Laboratory, Didcot, Oxfordshire, UK
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35
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Sibille R, Gauthier N, Lhotel E, Porée V, Pomjakushin V, Ewings RA, Perring TG, Ollivier J, Wildes A, Ritter C, Hansen TC, Keen DA, Nilsen GJ, Keller L, Petit S, Fennell T. A quantum liquid of magnetic octupoles on the pyrochlore lattice. Nat Phys 2020; 16:546-552. [PMID: 32802143 PMCID: PMC7115929 DOI: 10.1038/s41567-020-0827-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/26/2019] [Accepted: 02/05/2020] [Indexed: 06/11/2023]
Abstract
Spin liquids are highly correlated yet disordered states formed by the entanglement of magnetic dipoles1. Theories define such states using gauge fields and deconfined quasiparticle excitations that emerge from a local constraint governing the ground state of a frustrated magnet. For example, the '2-in-2-out' ice rule for dipole moments on a tetrahedron can lead to a quantum spin ice2-4 in rare-earth pyrochlores. However, f-electron ions often carry multipole degrees of freedom of higher rank than dipoles, leading to intriguing behaviours and 'hidden' orders5-6. Here we show that the correlated ground state of a Ce3+-based pyrochlore, Ce2Sn2O7, is a quantum liquid of magnetic octupoles. Our neutron scattering results are consistent with a fluid-like state where degrees of freedom have a more complex magnetization density than that of magnetic dipoles. The nature and strength of the octupole-octupole couplings, together with the existence of a continuum of excitations attributed to spinons, provides further evidence for a quantum ice of octupoles governed by a '2-plus-2-minus' rule7-8. Our work identifies Ce2Sn2O7 as a unique example of frustrated multipoles forming a 'hidden' topological order, thus generalizing observations on quantum spin liquids to multipolar phases that can support novel types of emergent fields and excitations.
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Affiliation(s)
- Romain Sibille
- Laboratory for Neutron Scattering and Imaging, Paul Scherrer Institut, 5232 Villigen PSI, Switzerland
| | - Nicolas Gauthier
- Stanford Institute for Materials and Energy Science, SLAC National Accelerator Laboratory and Stanford University, Menlo Park, California 94025, USA
| | - Elsa Lhotel
- Institut Néel, CNRS–Université Joseph Fourier, 38042 Grenoble, France
| | - Victor Porée
- Laboratory for Neutron Scattering and Imaging, Paul Scherrer Institut, 5232 Villigen PSI, Switzerland
| | - Vladimir Pomjakushin
- Laboratory for Neutron Scattering and Imaging, Paul Scherrer Institut, 5232 Villigen PSI, Switzerland
| | - Russell A. Ewings
- ISIS Pulsed Neutron and Muon Source, STFC Rutherford Appleton Laboratory, Harwell Campus, Didcot, OX11 0QX, UK
| | - Toby G. Perring
- ISIS Pulsed Neutron and Muon Source, STFC Rutherford Appleton Laboratory, Harwell Campus, Didcot, OX11 0QX, UK
| | - Jacques Ollivier
- Institut Laue-Langevin, 71 avenue des Martyrs, 38000 Grenoble, France
| | - Andrew Wildes
- Institut Laue-Langevin, 71 avenue des Martyrs, 38000 Grenoble, France
| | - Clemens Ritter
- Institut Laue-Langevin, 71 avenue des Martyrs, 38000 Grenoble, France
| | - Thomas C. Hansen
- Institut Laue-Langevin, 71 avenue des Martyrs, 38000 Grenoble, France
| | - David A. Keen
- ISIS Pulsed Neutron and Muon Source, STFC Rutherford Appleton Laboratory, Harwell Campus, Didcot, OX11 0QX, UK
| | - Gøran J. Nilsen
- ISIS Pulsed Neutron and Muon Source, STFC Rutherford Appleton Laboratory, Harwell Campus, Didcot, OX11 0QX, UK
| | - Lukas Keller
- Laboratory for Neutron Scattering and Imaging, Paul Scherrer Institut, 5232 Villigen PSI, Switzerland
| | - Sylvain Petit
- LLB, CEA, CNRS, Université Paris-Saclay, CEA Saclay, 91191 Gif-sur-Yvette, France
| | - Tom Fennell
- Laboratory for Neutron Scattering and Imaging, Paul Scherrer Institut, 5232 Villigen PSI, Switzerland
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Hou J, Ríos Gómez ML, Krajnc A, McCaul A, Li S, Bumstead AM, Sapnik AF, Deng Z, Lin R, Chater PA, Keeble DS, Keen DA, Appadoo D, Chan B, Chen V, Mali G, Bennett TD. Halogenated Metal-Organic Framework Glasses and Liquids. J Am Chem Soc 2020; 142:3880-3890. [PMID: 31978302 DOI: 10.1021/jacs.9b11639] [Citation(s) in RCA: 57] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
The synthesis of four novel crystalline zeolitic imidazolate framework (ZIF) structures using a mixed-ligand approach is reported. The inclusion of both imidazolate and halogenated benzimidazolate-derived linkers leads to glass-forming behavior by all four structures. Melting temperatures are observed to depend on both electronic and steric effects. Solid-state NMR and terahertz (THz)/far-IR demonstrate the presence of a Zn-F bond for fluorinated ZIF glasses. In situ THz/far-IR spectroscopic techniques reveal the dynamic structural properties of crystal, glass, and liquid phases of the halogenated ZIFs, linking the melting behavior of ZIFs to the propensity of the ZnN4 tetrahedra to undergo thermally induced deformation. The inclusion of halogenated ligands within metal-organic framework (MOF) glasses improves their gas-uptake properties.
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Affiliation(s)
- Jingwei Hou
- Department of Materials Science and Metallurgy , University of Cambridge , 27 Charles Babbage Road , Cambridge CB3 0FS , United Kingdom.,School of Chemical Engineering , University of Queensland , St Lucia , Queensland 4072 , Australia
| | - María Laura Ríos Gómez
- Department of Materials Science and Metallurgy , University of Cambridge , 27 Charles Babbage Road , Cambridge CB3 0FS , United Kingdom.,Institute of Materials Research (IIM-UNAM), Circuito Exterior , Ciudad Universitaria , Coyoacán , 04510 Mexico City , Mexico
| | - Andraž Krajnc
- Department of Inorganic Chemistry and Technology , National Institute of Chemistry , 1001 Ljubljana , Slovenia
| | - Aoife McCaul
- Department of Materials Science and Metallurgy , University of Cambridge , 27 Charles Babbage Road , Cambridge CB3 0FS , United Kingdom
| | - Shichun Li
- Department of Materials Science and Metallurgy , University of Cambridge , 27 Charles Babbage Road , Cambridge CB3 0FS , United Kingdom.,Institute of Chemical Materials , China Academy of Engineering Physics , Mianyang 621900 , P. R. China
| | - Alice M Bumstead
- Department of Materials Science and Metallurgy , University of Cambridge , 27 Charles Babbage Road , Cambridge CB3 0FS , United Kingdom
| | - Adam F Sapnik
- Department of Materials Science and Metallurgy , University of Cambridge , 27 Charles Babbage Road , Cambridge CB3 0FS , United Kingdom
| | - Zeyu Deng
- Department of Materials Science and Metallurgy , University of Cambridge , 27 Charles Babbage Road , Cambridge CB3 0FS , United Kingdom
| | - Rijia Lin
- School of Chemical Engineering , University of Queensland , St Lucia , Queensland 4072 , Australia
| | - Philip A Chater
- Diamond House, Harwell Science & Innovation Campus , Diamond Light Source, Ltd. , Didcot , Oxfordshire OX11 0DE , United Kingdom
| | - Dean S Keeble
- Diamond House, Harwell Science & Innovation Campus , Diamond Light Source, Ltd. , Didcot , Oxfordshire OX11 0DE , United Kingdom
| | - David A Keen
- ISIS Facility , Rutherford Appleton Laboratory , Harwell Campus , Didcot , Oxon OX11 0QX , United Kingdom
| | - Dominique Appadoo
- Australian Synchrotron , 800 Blackburn Road , Clayton , Victoria 3168 , Australia
| | - Bun Chan
- Graduate School of Engineering , Nagasaki University , Nagasaki 852-8521 , Japan
| | - Vicki Chen
- School of Chemical Engineering , University of Queensland , St Lucia , Queensland 4072 , Australia
| | - Gregor Mali
- Department of Inorganic Chemistry and Technology , National Institute of Chemistry , 1001 Ljubljana , Slovenia
| | - Thomas D Bennett
- Department of Materials Science and Metallurgy , University of Cambridge , 27 Charles Babbage Road , Cambridge CB3 0FS , United Kingdom
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38
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Kovalevsky A, Gerlits O, Beltran K, Weiss KL, Keen DA, Blakeley MP, Louis JM, Weber IT. Proton transfer and drug binding details revealed in neutron diffraction studies of wild-type and drug resistant HIV-1 protease. Methods Enzymol 2020; 634:257-279. [PMID: 32093836 DOI: 10.1016/bs.mie.2019.12.002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
HIV-1 protease is an essential therapeutic target for the design and development of antiviral inhibitors to treat AIDS. We used room temperature neutron crystallography to accurately determine hydrogen atom positions in several protease complexes with clinical drugs, amprenavir and darunavir. Hydrogen bonding interactions were carefully mapped to provide an unprecedented picture of drug binding to the protease target. We demonstrate that hydrogen atom positions within the enzyme catalytic site can be altered by introducing drug resistant mutations and by protonating surface residues that trigger proton transfer reactions between the catalytic Asp residues and the hydroxyl group of darunavir. When protein perdeuteration is not feasible, we validate the use of initial H/D exchange with unfolded protein and partial deuteration in pure D2O with hydrogenous glycerol to maximize deuterium incorporation into the protein, with no detrimental effects on the growth of quality crystals suitable for neutron diffraction experiments.
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Affiliation(s)
- Andrey Kovalevsky
- Neutron Scattering Division, Oak Ridge National Laboratory, Oak Ridge, TN, United States.
| | - Oksana Gerlits
- Department of Natural Sciences, Tennessee Wesleyan University, Athens, TN, United States
| | - Kaira Beltran
- Department of Natural Sciences, Tennessee Wesleyan University, Athens, TN, United States
| | - Kevin L Weiss
- Neutron Scattering Division, Oak Ridge National Laboratory, Oak Ridge, TN, United States
| | - David A Keen
- ISIS Facility, Rutherford Appleton Laboratory, Harwell Campus, Didcot, United Kingdom
| | | | - John M Louis
- Laboratory of Chemical Physics, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, DHHS, Bethesda, MD, United States
| | - Irene T Weber
- Department of Biology, Georgia State University, Atlanta, GA, United States; Department of Chemistry, Georgia State University, Atlanta, GA, United States
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39
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Bumstead AM, Ríos Gómez ML, Thorne MF, Sapnik AF, Longley L, Tuffnell JM, Keeble DS, Keen DA, Bennett TD. Investigating the melting behaviour of polymorphic zeolitic imidazolate frameworks. CrystEngComm 2020. [DOI: 10.1039/d0ce00408a] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
The study of polymorphic zeolitic imidazolate frameworks demonstrates the influence of linker chemistry and framework structure on their thermal behaviour.
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Affiliation(s)
- Alice M. Bumstead
- Department of Materials Science and Metallurgy
- University of Cambridge
- Cambridge
- UK
| | - María Laura Ríos Gómez
- Department of Materials Science and Metallurgy
- University of Cambridge
- Cambridge
- UK
- Institute of Materials Research (IIM-UNAM)
| | - Michael F. Thorne
- Department of Materials Science and Metallurgy
- University of Cambridge
- Cambridge
- UK
| | - Adam F. Sapnik
- Department of Materials Science and Metallurgy
- University of Cambridge
- Cambridge
- UK
| | - Louis Longley
- Department of Materials Science and Metallurgy
- University of Cambridge
- Cambridge
- UK
| | - Joshua M. Tuffnell
- Department of Materials Science and Metallurgy
- University of Cambridge
- Cambridge
- UK
- Cavendish Laboratory
| | | | | | - Thomas D. Bennett
- Department of Materials Science and Metallurgy
- University of Cambridge
- Cambridge
- UK
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40
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Ashling CW, Johnstone DN, Widmer RN, Hou J, Collins SM, Sapnik AF, Bumstead AM, Midgley PA, Chater PA, Keen DA, Bennett TD. Synthesis and Properties of a Compositional Series of MIL-53(Al) Metal-Organic Framework Crystal-Glass Composites. J Am Chem Soc 2019; 141:15641-15648. [PMID: 31491080 PMCID: PMC7007233 DOI: 10.1021/jacs.9b07557] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
![]()
Metal–organic
framework crystal-glass composites (MOF-CGCs)
are materials in which a crystalline MOF is dispersed within a MOF
glass. In this work, we explore the room-temperature stabilization
of the open-pore form of MIL-53(Al), usually observed at high temperature,
which occurs upon encapsulation within a ZIF-62(Zn) MOF glass matrix.
A series of MOF-CGCs containing different loadings of MIL-53(Al) were
synthesized and characterized using X-ray diffraction and nuclear
magnetic resonance spectroscopy. An upper limit of MIL-53(Al) that
can be stabilized in the composite was determined for the first time.
The nanostructure of the composites was probed using pair distribution
function analysis and scanning transmission electron microscopy. Notably,
the distribution and integrity of the crystalline component in a sample
series were determined, and these findings were related to the MOF-CGC
gas adsorption capacity in order to identify the optimal loading necessary
for maximum CO2 sorption capacity.
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Affiliation(s)
- Christopher W Ashling
- Department of Materials Science and Metallurgy , University of Cambridge , Cambridge , CB3 0FS U.K
| | - Duncan N Johnstone
- Department of Materials Science and Metallurgy , University of Cambridge , Cambridge , CB3 0FS U.K
| | - Remo N Widmer
- Department of Earth Sciences , University of Cambridge , Downing Street , Cambridge , CB2 3EQ U.K
| | - Jingwei Hou
- Department of Materials Science and Metallurgy , University of Cambridge , Cambridge , CB3 0FS U.K
| | - Sean M Collins
- Department of Materials Science and Metallurgy , University of Cambridge , Cambridge , CB3 0FS U.K
| | - Adam F Sapnik
- Department of Materials Science and Metallurgy , University of Cambridge , Cambridge , CB3 0FS U.K
| | - Alice M Bumstead
- Department of Materials Science and Metallurgy , University of Cambridge , Cambridge , CB3 0FS U.K
| | - Paul A Midgley
- Department of Materials Science and Metallurgy , University of Cambridge , Cambridge , CB3 0FS U.K
| | - Philip A Chater
- Diamond Light Source Ltd. , Diamond House, Harwell Campus , Didcot , Oxfordshire OX11 0DE U.K
| | - David A Keen
- ISIS Facility , Rutherford Appleton Laboratory , Harwell Campus , Didcot , Oxfordshire OX11 0QX U.K
| | - Thomas D Bennett
- Department of Materials Science and Metallurgy , University of Cambridge , Cambridge , CB3 0FS U.K
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41
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Longley L, Collins SM, Li S, Smales GJ, Erucar I, Qiao A, Hou J, Doherty CM, Thornton AW, Hill AJ, Yu X, Terrill NJ, Smith AJ, Cohen SM, Midgley PA, Keen DA, Telfer SG, Bennett TD. Flux melting of metal-organic frameworks. Chem Sci 2019; 10:3592-3601. [PMID: 30996951 PMCID: PMC6430010 DOI: 10.1039/c8sc04044c] [Citation(s) in RCA: 42] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2018] [Accepted: 02/12/2019] [Indexed: 11/27/2022] Open
Abstract
Recent demonstrations of melting in the metal-organic framework (MOF) family have created interest in the interfacial domain between inorganic glasses and amorphous organic polymers. The chemical and physical behaviour of porous hybrid liquids and glasses is of particular interest, though opportunities are limited by the inaccessible melting temperatures of many MOFs. Here, we show that the processing technique of flux melting, 'borrowed' from the inorganic domain, may be applied in order to melt ZIF-8, a material which does not possess an accessible liquid state in the pure form. Effectively, we employ the high-temperature liquid state of one MOF as a solvent for a secondary, non-melting MOF component. Differential scanning calorimetry, small- and wide-angle X-ray scattering, electron microscopy and X-ray total scattering techniques are used to show the flux melting of the crystalline component within the liquid. Gas adsorption and positron annihilation lifetime spectroscopy measurements show that this results in enhanced, accessible porosity to a range of guest molecules in the resultant flux melted MOF glass.
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Affiliation(s)
- Louis Longley
- Department of Materials Science and Metallurgy , University of Cambridge , Charles Babbage Road , Cambridge , CB3 0FS , UK .
| | - Sean M Collins
- Department of Materials Science and Metallurgy , University of Cambridge , Charles Babbage Road , Cambridge , CB3 0FS , UK .
| | - Shichun Li
- Department of Materials Science and Metallurgy , University of Cambridge , Charles Babbage Road , Cambridge , CB3 0FS , UK .
- Institute of Chemical Materials , China Academy of Engineering Physics , Mianyang 621900 , China
| | - Glen J Smales
- Department of Chemistry , University College London , Gordon Street , London , WC1H 0AJ , UK
- Diamond Light Source Ltd , Diamond House, Harwell Science and Innovation Campus , Didcot OX11 0DE , UK
| | - Ilknur Erucar
- Department of Natural and Mathematical Sciences , Faculty of Engineering , Ozyegin University , Istanbul , Turkey
| | - Ang Qiao
- State Key Laboratory of Silicate Materials for Architectures , Wuhan University of Technology , Wuhan 430070 , China
| | - Jingwei Hou
- Department of Materials Science and Metallurgy , University of Cambridge , Charles Babbage Road , Cambridge , CB3 0FS , UK .
| | - Cara M Doherty
- Future Industries , Commonwealth Scientific and Industrial Research Organisation , Clayton South , Victoria 3168 , Australia
| | - Aaron W Thornton
- Future Industries , Commonwealth Scientific and Industrial Research Organisation , Clayton South , Victoria 3168 , Australia
| | - Anita J Hill
- Future Industries , Commonwealth Scientific and Industrial Research Organisation , Clayton South , Victoria 3168 , Australia
| | - Xiao Yu
- Department of Chemistry and Biochemistry , University of California, San Diego , La Jolla , California 92023-0358 , USA
| | - Nicholas J Terrill
- Diamond Light Source Ltd , Diamond House, Harwell Science and Innovation Campus , Didcot OX11 0DE , UK
| | - Andrew J Smith
- Diamond Light Source Ltd , Diamond House, Harwell Science and Innovation Campus , Didcot OX11 0DE , UK
| | - Seth M Cohen
- Department of Chemistry and Biochemistry , University of California, San Diego , La Jolla , California 92023-0358 , USA
| | - Paul A Midgley
- Department of Materials Science and Metallurgy , University of Cambridge , Charles Babbage Road , Cambridge , CB3 0FS , UK .
| | - David A Keen
- ISIS Facility , Rutherford Appleton Laboratory , Harwell Campus , Didcot , Oxon OX11 0QX , UK
| | - Shane G Telfer
- MacDiarmid Institute for Advanced Materials and Nanotechnology , Institute of Fundamental Sciences , Massey University , Palmerston North 4442 , New Zealand
| | - Thomas D Bennett
- Department of Materials Science and Metallurgy , University of Cambridge , Charles Babbage Road , Cambridge , CB3 0FS , UK .
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Zhang J, Longley L, Liu H, Ashling CW, Chater PA, Beyer KA, Chapman KW, Tao H, Keen DA, Bennett TD, Yue Y. Structural evolution in a melt-quenched zeolitic imidazolate framework glass during heat-treatment. Chem Commun (Camb) 2019; 55:2521-2524. [PMID: 30742158 DOI: 10.1039/c8cc09574d] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A pronounced enthalpy release occurs around 1.38Tg in the prototypical metal-organic framework glass formed from ZIF-4 [Zn(C3H3N2)2], but there is no sign for any crystallization (i.e., long-range ordering) taking place. The enthalpy release peak is attributed to pore collapse and structural densification.
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Affiliation(s)
- Jiayan Zhang
- State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan 430070, China
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43
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Vandavasi VG, Blakeley MP, Keen DA, Hu LR, Huang Z, Kovalevsky A. Temperature-Induced Replacement of Phosphate Proton with Metal Ion Captured in Neutron Structures of A-DNA. Structure 2018; 26:1645-1650.e3. [PMID: 30244969 PMCID: PMC6281803 DOI: 10.1016/j.str.2018.08.001] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2018] [Revised: 06/02/2018] [Accepted: 08/01/2018] [Indexed: 11/18/2022]
Abstract
Nucleic acids can fold into well-defined 3D structures that help determine their function. Knowing precise nucleic acid structures can also be used for the design of nucleic acid-based therapeutics. However, locations of hydrogen atoms, which are key players of nucleic acid function, are normally not determined with X-ray crystallography. Accurate determination of hydrogen atom positions can provide indispensable information on protonation states, hydrogen bonding, and water architecture in nucleic acids. Here, we used neutron crystallography in combination with X-ray diffraction to obtain joint X-ray/neutron structures at both room and cryo temperatures of a self-complementary A-DNA oligonucleotide d[GTGG(CSe)CAC]2 containing 2'-SeCH3 modification on Cyt5 (CSe) at pH 5.6. We directly observed protonation of a backbone phosphate oxygen of Ade7 at room temperature. The proton is replaced with hydrated Mg2+ upon cooling the crystal to 100 K, indicating that metal binding is favored at low temperature, whereas proton binding is dominant at room temperature.
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Affiliation(s)
- Venu Gopal Vandavasi
- Neutron Scattering Division, Neutron Sciences Directorate, Oak Ridge National Laboratory, Oak Ridge, TN 37922, USA
| | - Matthew P Blakeley
- Large Scale Structures Group, Institut Laue-Langevin, Grenoble 38000, France
| | - David A Keen
- ISIS Facility, Rutherford Appleton Laboratory, Harwell Campus, Didcot OX11 0QX, UK
| | | | - Zhen Huang
- Department of Chemistry, Georgia State University, Atlanta, GA 30303, USA.
| | - Andrey Kovalevsky
- Neutron Scattering Division, Neutron Sciences Directorate, Oak Ridge National Laboratory, Oak Ridge, TN 37922, USA.
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44
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Datta K, Margaritescu I, Keen DA, Mihailova B. Stochastic Polarization Instability in PbTiO_{3}. Phys Rev Lett 2018; 121:137602. [PMID: 30312067 DOI: 10.1103/physrevlett.121.137602] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/28/2018] [Revised: 08/15/2018] [Indexed: 06/08/2023]
Abstract
Although discussions of structural phase transitions in prototypical ferroelectric systems with the perovskite structure, such as BaTiO_{3} and PbTiO_{3}, started almost seventy years ago, an atomic-level description of the polar characteristics as a function of temperature, pressure, and composition remains topical. Here we provide a novel quantitative description of the temperature-driven local structural correlations in PbTiO_{3} via the development of characteristic relative cationic shifts. The results give new insights into the phase transition beyond those reliant on the long-range order. The ferroelectric-to-paraelectric transition of PbTiO_{3} is realized by the extent of a stochastic polarization instability driven by a progressive misalignment instead of a complete disappearance of the local dipoles, which further suggests that such polarization instability is chemically induced at the morphotropic phase boundary of PbTiO_{3}-based solid solutions with giant piezoelectric effect. As such, our results not only identify the evolving atomistic disorder in a perovskite-based ferroelectric system, but also suggest that polarization instability can serve as a generic fingerprint for phase transitions as well as for better understanding structure-property relationships in PbTiO_{3}-based ferroelectric solid solutions.
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Affiliation(s)
- K Datta
- Department of Earth Sciences, University of Hamburg, Grindelallee 48, Hamburg-20146, Germany
| | - I Margaritescu
- Department of Earth Sciences, University of Hamburg, Grindelallee 48, Hamburg-20146, Germany
| | - D A Keen
- ISIS Facility, Rutherford Appleton Laboratory, Harwell Campus, Didcot, Oxfordshire OX11 0QX, United Kingdom
| | - B Mihailova
- Department of Earth Sciences, University of Hamburg, Grindelallee 48, Hamburg-20146, Germany
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45
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Johnston H, Black AP, Kayser P, Oró-Solé J, Keen DA, Fuertes A, Attfield JP. Dimensional crossover of correlated anion disorder in oxynitride perovskites. Chem Commun (Camb) 2018; 54:5245-5247. [PMID: 29726861 DOI: 10.1039/c8cc03462a] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A simple crossover from two-dimensional to three-dimensional correlated disorder of O and N atoms on a cubic lattice has been discovered within the Ba1-xSrxTaO2N series of perovskite oxynitrides. The crossover is driven by lattice expansion as x decreases, and provides a rapid increase in entropy due to a change from subextensive to extensive configurational entropy regimes.
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Affiliation(s)
- Hannah Johnston
- CSEC and School of Chemistry, University of Edinburgh, King's Buildings, Mayfield Road, Edinburgh, EH9 3JZ, UK.
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46
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Zhou C, Stepniewska M, Longley L, Ashling CW, Chater PA, Keen DA, Bennett TD, Yue Y. Thermodynamic features and enthalpy relaxation in a metal–organic framework glass. Phys Chem Chem Phys 2018; 20:18291-18296. [DOI: 10.1039/c8cp02340a] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In this work, we explore the thermodynamic evolution in a melt-quenched metal–organic framework glass, formed from ZIF-62 upon heating to the melting point (Tm), and subsequent enthalpy relaxation.
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Affiliation(s)
- Chao Zhou
- Department of Chemistry and Bioscience
- Aalborg University
- Aalborg DK-9220
- Denmark
| | - Malwina Stepniewska
- Department of Chemistry and Bioscience
- Aalborg University
- Aalborg DK-9220
- Denmark
| | - Louis Longley
- Department of Materials Science and Metallurgy
- University of Cambridge
- Cambridge CB3 0FS
- UK
| | - Christopher W. Ashling
- Department of Materials Science and Metallurgy
- University of Cambridge
- Cambridge CB3 0FS
- UK
| | - Philip A. Chater
- Diamond Light Source Ltd
- Diamond House
- Harwell Science and Innovation Campus
- Didcot OX11 0DE
- UK
| | - David A. Keen
- ISIS Facility
- Rutherford Appleton Laboratory
- Harwell Campus
- Didcot
- UK
| | - Thomas D. Bennett
- Department of Materials Science and Metallurgy
- University of Cambridge
- Cambridge CB3 0FS
- UK
| | - Yuanzheng Yue
- Department of Chemistry and Bioscience
- Aalborg University
- Aalborg DK-9220
- Denmark
- State Key Laboratory of Silicate Materials for Architectures
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47
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Gaillac R, Pullumbi P, Beyer KA, Chapman KW, Keen DA, Bennett TD, Coudert FX. Liquid metal-organic frameworks. Nat Mater 2017; 16:1149-1154. [PMID: 29035353 DOI: 10.1038/nmat4998] [Citation(s) in RCA: 192] [Impact Index Per Article: 27.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/21/2017] [Accepted: 08/31/2017] [Indexed: 05/22/2023]
Abstract
Metal-organic frameworks (MOFs) are a family of chemically diverse materials, with applications in a wide range of fields, covering engineering, physics, chemistry, biology and medicine. Until recently, research has focused almost entirely on crystalline structures, yet now a clear trend is emerging, shifting the emphasis onto disordered states, including 'defective by design' crystals, as well as amorphous phases such as glasses and gels. Here we introduce a strongly associated MOF liquid, obtained by melting a zeolitic imidazolate framework. We combine in situ variable temperature X-ray, ex situ neutron pair distribution function experiments, and first-principles molecular dynamics simulations to study the melting phenomenon and the nature of the liquid obtained. We demonstrate from structural, dynamical, and thermodynamical information that the chemical configuration, coordinative bonding, and porosity of the parent crystalline framework survive upon formation of the MOF liquid.
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Affiliation(s)
- Romain Gaillac
- Chimie ParisTech, PSL Research University, CNRS, Institut de Recherche de Chimie Paris, 75005 Paris, France
- Air Liquide, Centre de Recherche Paris Saclay, 78354 Jouy-en-Josas, France
| | - Pluton Pullumbi
- Air Liquide, Centre de Recherche Paris Saclay, 78354 Jouy-en-Josas, France
| | - Kevin A Beyer
- X-ray Science Division, Advanced Photon Source, Argonne National Laboratory, 9700 South Cass Avenue, Argonne, Illinois 60439, USA
| | - Karena W Chapman
- X-ray Science Division, Advanced Photon Source, Argonne National Laboratory, 9700 South Cass Avenue, Argonne, Illinois 60439, USA
| | - David A Keen
- ISIS Facility, Rutherford Appleton Laboratory, Harwell Campus, Didcot, Oxon OX11 0QX, UK
| | - Thomas D Bennett
- Department of Materials Science and Metallurgy, University of Cambridge, 27 Charles Babbage Road, Cambridge CB3 0FS, UK
| | - François-Xavier Coudert
- Chimie ParisTech, PSL Research University, CNRS, Institut de Recherche de Chimie Paris, 75005 Paris, France
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48
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Kovalevsky A, Gerlits O, Das A, Wymore T, Keen DA, Blakeley M, Louis JM, Weber I. Neutron crystallographic and scattering studies of function and inhibition of HIV-1 protease. Acta Crystallogr A Found Adv 2017. [DOI: 10.1107/s0108767317099640] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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49
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Bueken B, Van Velthoven N, Willhammar T, Stassin T, Stassen I, Keen DA, Baron GV, Denayer JFM, Ameloot R, Bals S, De Vos D, Bennett TD. Gel-based morphological design of zirconium metal-organic frameworks. Chem Sci 2017; 8:3939-3948. [PMID: 28553536 PMCID: PMC5433495 DOI: 10.1039/c6sc05602d] [Citation(s) in RCA: 113] [Impact Index Per Article: 16.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2016] [Accepted: 03/20/2017] [Indexed: 12/20/2022] Open
Abstract
The ability of metal-organic frameworks (MOFs) to gelate under specific synthetic conditions opens up new opportunities in the preparation and shaping of hierarchically porous MOF monoliths, which could be directly implemented for catalytic and adsorptive applications. In this work, we present the first examples of xero- or aerogel monoliths consisting solely of nanoparticles of several prototypical Zr4+-based MOFs: UiO-66-X (X = H, NH2, NO2, (OH)2), UiO-67, MOF-801, MOF-808 and NU-1000. High reactant and water concentrations during synthesis were observed to induce the formation of gels, which were converted to monolithic materials by drying in air or supercritical CO2. Electron microscopy, combined with N2 physisorption experiments, was used to show that irregular nanoparticle packing leads to pure MOF monoliths with hierarchical pore systems, featuring both intraparticle micropores and interparticle mesopores. Finally, UiO-66 gels were shaped into monolithic spheres of 600 μm diameter using an oil-drop method, creating promising candidates for packed-bed catalytic or adsorptive applications, where hierarchical pore systems can greatly mitigate mass transfer limitations.
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Affiliation(s)
- Bart Bueken
- Centre for Surface Chemistry and Catalysis , Department of Microbial and Molecular Systems (M2S) , KU Leuven , Celestijnenlaan 200F p.o. box 2461 , 3001 Leuven , Belgium .
| | - Niels Van Velthoven
- Centre for Surface Chemistry and Catalysis , Department of Microbial and Molecular Systems (M2S) , KU Leuven , Celestijnenlaan 200F p.o. box 2461 , 3001 Leuven , Belgium .
| | - Tom Willhammar
- EMAT , University of Antwerp , Groenenborgerlaan 171 , 2020 Antwerp , Belgium
- Department of Materials and Environmental Chemistry , Stockholm University , S-106 91 Stockholm , Sweden
| | - Timothée Stassin
- Centre for Surface Chemistry and Catalysis , Department of Microbial and Molecular Systems (M2S) , KU Leuven , Celestijnenlaan 200F p.o. box 2461 , 3001 Leuven , Belgium .
| | - Ivo Stassen
- Centre for Surface Chemistry and Catalysis , Department of Microbial and Molecular Systems (M2S) , KU Leuven , Celestijnenlaan 200F p.o. box 2461 , 3001 Leuven , Belgium .
| | - David A Keen
- ISIS Facility , Rutherford Appleton Laboratory , Harwell Campus , Didcot , Oxon OX11 0QX , UK
| | - Gino V Baron
- Department of Chemical Engineering , Vrije Universiteit Brussel , Pleinlaan 2 , 1050 Brussels , Belgium
| | - Joeri F M Denayer
- Department of Chemical Engineering , Vrije Universiteit Brussel , Pleinlaan 2 , 1050 Brussels , Belgium
| | - Rob Ameloot
- Centre for Surface Chemistry and Catalysis , Department of Microbial and Molecular Systems (M2S) , KU Leuven , Celestijnenlaan 200F p.o. box 2461 , 3001 Leuven , Belgium .
| | - Sara Bals
- EMAT , University of Antwerp , Groenenborgerlaan 171 , 2020 Antwerp , Belgium
| | - Dirk De Vos
- Centre for Surface Chemistry and Catalysis , Department of Microbial and Molecular Systems (M2S) , KU Leuven , Celestijnenlaan 200F p.o. box 2461 , 3001 Leuven , Belgium .
| | - Thomas D Bennett
- Department of Materials Science and Metallurgy , University of Cambridge , 27 Charles Babbage Road , Cambridge CB3 0FS , UK .
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50
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Gerlits O, Keen DA, Blakeley MP, Louis JM, Weber IT, Kovalevsky A. Room Temperature Neutron Crystallography of Drug Resistant HIV-1 Protease Uncovers Limitations of X-ray Structural Analysis at 100 K. J Med Chem 2017; 60:2018-2025. [PMID: 28195728 DOI: 10.1021/acs.jmedchem.6b01767] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
HIV-1 protease inhibitors are crucial for treatment of HIV-1/AIDS, but their effectiveness is thwarted by rapid emergence of drug resistance. To better understand binding of clinical inhibitors to resistant HIV-1 protease, we used room-temperature joint X-ray/neutron (XN) crystallography to obtain an atomic-resolution structure of the protease triple mutant (V32I/I47V/V82I) in complex with amprenavir. The XN structure reveals a D+ ion located midway between the inner Oδ1 oxygen atoms of the catalytic aspartic acid residues. Comparison of the current XN structure with our previous XN structure of the wild-type HIV-1 protease-amprenavir complex suggests that the three mutations do not significantly alter the drug-enzyme interactions. This is in contrast to the observations in previous 100 K X-ray structures of these complexes that indicated loss of interactions by the drug with the triple mutant protease. These findings, thus, uncover limitations of structural analysis of drug binding using X-ray structures obtained at 100 K.
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Affiliation(s)
- Oksana Gerlits
- UT/ORNL Joint Institute of Biological Sciences, University of Tennessee , Knoxville, Tennessee 37996, United States
| | - David A Keen
- ISIS Facility, Rutherford Appleton Laboratory , Harwell Campus, Didcot, OX11 0QX, U.K
| | - Matthew P Blakeley
- Large-Scale Structures Group, Institut Laue Langevin , 71 avenue des Martyrs, 38000 Grenoble, France
| | - John M Louis
- Laboratory of Chemical Physics, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health , DHHS, Bethesda, Maryland 20892-0520, United States
| | - Irene T Weber
- Departments of Chemistry and Biology, Georgia State University , Atlanta, Georgia 30302, United States
| | - Andrey Kovalevsky
- Biology and Soft Matter Division, Oak Ridge National Laboratory , Oak Ridge, Tennessee 37831, United States
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