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Usuba J, Sun Z, Nguyen HPQ, Raju C, Schmidt-Rohr K, Han GGD. Mechanoactivated amorphization and photopolymerization of styryldipyryliums. COMMUNICATIONS MATERIALS 2024; 5:98. [PMID: 38859933 PMCID: PMC11162349 DOI: 10.1038/s43246-024-00539-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/08/2024] [Accepted: 06/02/2024] [Indexed: 06/12/2024]
Abstract
Conventional topochemical photopolymerization reactions occur exclusively in precisely-engineered photoactive crystalline states, which often produces high-insoluble polymers. To mitigate this, here, we report the mechanoactivation of photostable styryldipyrylium-based monomers, which results in their amorphization-enabled solid-state photopolymerization and produces soluble and processable amorphous polymers. A combination of solid-state nuclear magnetic resonance, X-ray diffraction, and absorption/fluorescence spectroscopy reveals the crucial role of a mechanically-disordered monomer phase in yielding polymers via photo-induced [2 + 2] cycloaddition reaction. Hence, mechanoactivation and amorphization can expand the scope of topochemical polymerization conditions to open up opportunities for generating polymers that are otherwise difficult to synthesize and analyze.
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Affiliation(s)
- Junichi Usuba
- Department of Chemistry, Brandeis University, 415 South Street, Waltham, MA 02453 USA
| | - Zhenhuan Sun
- Department of Chemistry, Brandeis University, 415 South Street, Waltham, MA 02453 USA
| | - Han P. Q. Nguyen
- Department of Chemistry, Brandeis University, 415 South Street, Waltham, MA 02453 USA
| | - Cijil Raju
- Department of Chemistry, Brandeis University, 415 South Street, Waltham, MA 02453 USA
| | - Klaus Schmidt-Rohr
- Department of Chemistry, Brandeis University, 415 South Street, Waltham, MA 02453 USA
| | - Grace G. D. Han
- Department of Chemistry, Brandeis University, 415 South Street, Waltham, MA 02453 USA
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Patyk-Kaźmierczak E, Izquierdo-Ruiz F, Lobato A, Kaźmierczak M, Moszczyńska I, Olejniczak A, Recio JM. The curious case of proton migration under pressure in the malonic acid and 4,4'-bipyridine cocrystal. IUCRJ 2024; 11:168-181. [PMID: 38275161 PMCID: PMC10916288 DOI: 10.1107/s2052252524000344] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/10/2023] [Accepted: 01/09/2024] [Indexed: 01/27/2024]
Abstract
In the search for new active pharmaceutical ingredients, the precise control of the chemistry of cocrystals becomes essential. One crucial step within this chemistry is proton migration between cocrystal coformers to form a salt, usually anticipated by the empirical ΔpKa rule. Due to the effective role it plays in modifying intermolecular distances and interactions, pressure adds a new dimension to the ΔpKa rule. Still, this variable has been scarcely applied to induce proton-transfer reactions within these systems. In our study, high-pressure X-ray diffraction and Raman spectroscopy experiments, supported by DFT calculations, reveal modifications to the protonation states of the 4,4'-bipyridine (BIPY) and malonic acid (MA) cocrystal (BIPYMA) that allow the conversion of the cocrystal phase into ionic salt polymorphs. On compression, neutral BIPYMA and monoprotonated (BIPYH+MA-) species coexist up to 3.1 GPa, where a phase transition to a structure of P21/c symmetry occurs, induced by a double proton-transfer reaction forming BIPYH22+MA2-. The low-pressure C2/c phase is recovered at 2.4 GPa on decompression, leading to a 0.7 GPa hysteresis pressure range. This is one of a few studies on proton transfer in multicomponent crystals that shows how susceptible the interconversion between differently charged species is to even slight pressure changes, and how the proton transfer can be a triggering factor leading to changes in the crystal symmetry. These new data, coupled with information from previous reports on proton-transfer reactions between coformers, extend the applicability of the ΔpKa rule incorporating the pressure required to induce salt formation.
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Affiliation(s)
- Ewa Patyk-Kaźmierczak
- Facuty of Chemistry, Adam Mickiewicz University in Poznań, Uniwersytetu Poznańskiego 8, Poznań 61-614, Poland
| | - Fernando Izquierdo-Ruiz
- MALTA-Consolider Team and Departamento de Química Física, University Complutense of Madrid, Avda. de Séneca, 2 Ciudad Universitaria, Madrid 28040, Spain
| | - Alvaro Lobato
- MALTA-Consolider Team and Departamento de Química Física, University Complutense of Madrid, Avda. de Séneca, 2 Ciudad Universitaria, Madrid 28040, Spain
| | - Michał Kaźmierczak
- Facuty of Chemistry, Adam Mickiewicz University in Poznań, Uniwersytetu Poznańskiego 8, Poznań 61-614, Poland
| | - Ida Moszczyńska
- Facuty of Chemistry, Adam Mickiewicz University in Poznań, Uniwersytetu Poznańskiego 8, Poznań 61-614, Poland
| | - Anna Olejniczak
- Facuty of Chemistry, Adam Mickiewicz University in Poznań, Uniwersytetu Poznańskiego 8, Poznań 61-614, Poland
| | - J. Manuel Recio
- MALTA-Consolider Team and Departamento de Química Física y Analítica, University of Oviedo, Julián Clavería n° 8, Oviedo 33006, Spain
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Li W, Zhou L, Tian B, Chen K, Feng Y, Wang T, Wang N, Huang X, Hao H. Polymorphism of Pradofloxacin: Crystal Structure Analysis, Stability Study, and Phase Transformation Behavior. Pharm Res 2023; 40:999-1012. [PMID: 37029294 DOI: 10.1007/s11095-023-03509-w] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2023] [Accepted: 03/26/2023] [Indexed: 04/09/2023]
Abstract
PURPOSE Pradofloxacin is an important antibiotic with poor physical stability. At present, there is no systematic study on its polymorphic form. The purpose of this study is to develop new crystal forms to improve the stability of Pradofloxacin and systematically study the crystal transformation relationships to guide industrial production. METHOD In this work, three solvent-free forms (Form A, Form B and Form C), a new dimethyl sulfoxide solvate (Form PL-DMSO) and a new hydrate (Form PL-H) were successfully obtained and the single crystal data of Form A, Form B and Form PL-DMSO were solved for the first time. Various solid state analysis techniques and slurry experiments have been used to evaluate the stability and determine phase transformation relationships of five crystal forms, the analysis of crystal structure provided theoretical support for the results. RESULT The water vapor adsorption and desorption experiences of Forms A, B, C and Form PL-H were studied, and the results show that the new hydrate has good hygroscopic stability and certain development potential. The thermal stability of different forms was determined by thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC) and the crystal structure shows that there are more hydrogen bonds and C - H···π interactions in form B, which is the reason why Form B is more stable than form A. Finally, the phase transformation relationships of the five crystal forms were systematically studied and discussed. CONCLUSION These results are helpful to provide guiding methods in the production and storage of pradofloxacin.
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Affiliation(s)
- Wenlei Li
- National Engineering Research Center of Industrial Crystallization Technology, School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072, China
| | - Lina Zhou
- National Engineering Research Center of Industrial Crystallization Technology, School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072, China
| | - Beiqian Tian
- National Engineering Research Center of Industrial Crystallization Technology, School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072, China
| | - Kui Chen
- National Engineering Research Center of Industrial Crystallization Technology, School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072, China
| | - Yaoguang Feng
- National Engineering Research Center of Industrial Crystallization Technology, School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072, China
| | - Ting Wang
- National Engineering Research Center of Industrial Crystallization Technology, School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072, China
- State Key Laboratory of Chemical Engineering, Tianjin University, Tianjin, 30072, China
| | - Na Wang
- National Engineering Research Center of Industrial Crystallization Technology, School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072, China
- State Key Laboratory of Chemical Engineering, Tianjin University, Tianjin, 30072, China
| | - Xin Huang
- National Engineering Research Center of Industrial Crystallization Technology, School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072, China.
- State Key Laboratory of Chemical Engineering, Tianjin University, Tianjin, 30072, China.
- Zhejiang Institute of Tianjin University, Ningbo, 315200, China.
| | - Hongxun Hao
- National Engineering Research Center of Industrial Crystallization Technology, School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072, China.
- State Key Laboratory of Chemical Engineering, Tianjin University, Tianjin, 30072, China.
- School of Chemical Engineering and Technology, Hainan University, Haikou, 570208, China.
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Bebiano SS, ter Horst JH, Oswald ID. Effect of Chirality on the Compression of 2-(2-Oxo-1-pyrrolidinyl)butyramide: A Tale of Two Crystals. CRYSTAL GROWTH & DESIGN 2020; 20:6731-6744. [PMID: 33071676 PMCID: PMC7552093 DOI: 10.1021/acs.cgd.0c00871] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/25/2020] [Revised: 08/25/2020] [Indexed: 06/11/2023]
Abstract
Understanding polymorphism in chiral systems for drug manufacturing is essential to avoid undesired therapeutic effects. Generally, polymorphism is studied through changes in temperature and solution concentration. A less common approach is the application of pressure. The goal of this work is to investigate the effect of pressure on levetiracetam (pure enantiomer) and etiracetam (racemic compound). Anisotropic compressions of levetiracetam and etiracetam are observed to 5.26 and 6.29 GPa, respectively. The most compressible direction for both was identified to be perpendicular to the layers of the structure. Raman spectroscopy and an analysis of intermolecular interactions suggest subtle phase transitions in levetiracetam (∼2 GPa) and etiracetam (∼1.5 GPa). The stability of etiracetam increases with respect to levetiracetam on compression; hence, the chiral resolution of this system is unfavorable using pressure. This work contributes to the ongoing efforts in understanding the stability of chiral systems.
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Affiliation(s)
- Suse S. Bebiano
- Strathclyde
Institute of Pharmacy and Biomedical Sciences, University of Strathclyde, 161 Cathedral Street, Glasgow G4 0RE, U.K.
- EPSRC
Centre for Innovative Manufacturing in Continuous Manufacturing and
Crystallisation, Technology Innovation Centre,
University of Strathclyde, 99 George Street, Glasgow G1 1RD, U.K.
| | - Joop H. ter Horst
- Strathclyde
Institute of Pharmacy and Biomedical Sciences, University of Strathclyde, 161 Cathedral Street, Glasgow G4 0RE, U.K.
- EPSRC
Centre for Innovative Manufacturing in Continuous Manufacturing and
Crystallisation, Technology Innovation Centre,
University of Strathclyde, 99 George Street, Glasgow G1 1RD, U.K.
| | - Iain D.H. Oswald
- Strathclyde
Institute of Pharmacy and Biomedical Sciences, University of Strathclyde, 161 Cathedral Street, Glasgow G4 0RE, U.K.
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Deville C, Folkjær M, Reinholdt P, Hvid MS, Lamagni P, Borup K, Sun Z, Lauritsen JV, McKee V, Jensen KMØ, Lock N. Cubes on a string: a series of linear coordination polymers with cubane-like nodes and dicarboxylate linkers. NANOSCALE 2020; 12:11601-11611. [PMID: 32432631 DOI: 10.1039/d0nr01503b] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
A series of semicrystalline and amorphous one-dimensional (1D) polymeric chains consisting of cubane-like CoII4L4 units (L = S-1,2-bis(benzimidazol-2-yl)ethanol) and dicarboxylates were synthesized and characterized by single crystal diffraction and X-ray total scattering. The polycationic chains are composed of [Co4L4(dicarboxylate)]2+ monomeric units, while one molecular dicarboxylate counterion is balancing the charge of each monomer. The linear compound series has five members, and the crystal structures were solved for [Co4L4(tph)](tph) and [Co4L4(ndc)](ndc), where tph = terephthalate and ndc = 2,6-naphthalenedicarboxylate. Partly crystalline compounds were produced by slow assembly at elevated temperature (over days), while the amorphous compounds were formed by fast precipitation (within minutes). Pair distribution function (PDF) analysis based on X-ray total scattering data reveals the presence of the cubane-like entity in both the amorphous and semicrystalline samples. While the powders are non-porous, precipitation is a fast and versatile method to produce compounds with cubane-like centres with moderate surface areas of 17-49 m2 g-1 allowing for surface chemical reactions. The powders have a high concentration of Lewis base sites as verified by their selective adsorption of CO2 over N2. The use of an amorphous cubane-like polymer for the electrocatalytic oxygen evolution reaction was demonstrated.
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Affiliation(s)
- Claire Deville
- Interdisciplinary Nanoscience Center (iNANO), Aarhus University, Gustav Wieds Vej 14, DK-8000 Aarhus C, Denmark
| | - Mads Folkjær
- Interdisciplinary Nanoscience Center (iNANO), Aarhus University, Gustav Wieds Vej 14, DK-8000 Aarhus C, Denmark
| | - Peter Reinholdt
- Department of Physics, Chemistry and Pharmacy, University of Southern Denmark, Campusvej 55, DK-5230 Odense M, Denmark
| | - Mathias S Hvid
- Interdisciplinary Nanoscience Center (iNANO), Aarhus University, Gustav Wieds Vej 14, DK-8000 Aarhus C, Denmark
| | - Paolo Lamagni
- Carbon Dioxide Activation Center (CADIAC), Interdisciplinary Nanoscience Center (iNANO), Aarhus University, Gustav Wieds Vej 14, DK-8000 Aarhus C, Denmark
| | - Kasper Borup
- Center for Materials Crystallography, Department of Chemistry and iNANO, Aarhus University, Langelandsgade 140, DK-8000 Aarhus C, Denmark
| | - Zhaozong Sun
- Interdisciplinary Nanoscience Center (iNANO), Aarhus University, Gustav Wieds Vej 14, DK-8000 Aarhus C, Denmark
| | - Jeppe Vang Lauritsen
- Interdisciplinary Nanoscience Center (iNANO), Aarhus University, Gustav Wieds Vej 14, DK-8000 Aarhus C, Denmark
| | - Vickie McKee
- Department of Physics, Chemistry and Pharmacy, University of Southern Denmark, Campusvej 55, DK-5230 Odense M, Denmark
| | - Kirsten M Ø Jensen
- Department of Chemistry and Nanoscience Center, University of Copenhagen, Universitetsparken 5, DK-2100 Copenhagen Ø, Denmark
| | - Nina Lock
- Carbon Dioxide Activation Center (CADIAC), Interdisciplinary Nanoscience Center (iNANO) and Dept. of Chemistry, Aarhus University, Gustav Wieds Vej 14, DK-8000 Aarhus C, Denmark.
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Li K, Li JJ, Zhao N, Xie TT, Di B, Xu LL. Thioether-based recyclable metal–organic frameworks for selective and efficient removal of Hg2+ from water. Dalton Trans 2019; 48:17800-17809. [DOI: 10.1039/c9dt03714d] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
Hg2+ is highly toxic and hazardous and widely found in polluted water.
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Affiliation(s)
- Kan Li
- Jiangsu Key Laboratory of Drug Design and Optimization
- China Pharmaceutical University
- Nanjing 210009
- China
| | - Jing-jing Li
- Jiangsu Key Laboratory of Drug Design and Optimization
- China Pharmaceutical University
- Nanjing 210009
- China
| | - Ni Zhao
- Jiangsu Key Laboratory of Drug Design and Optimization
- China Pharmaceutical University
- Nanjing 210009
- China
| | - Ting-ting Xie
- Jiangsu Key Laboratory of Drug Design and Optimization
- China Pharmaceutical University
- Nanjing 210009
- China
| | - Bin Di
- Jiangsu Key Laboratory of Drug Design and Optimization
- China Pharmaceutical University
- Nanjing 210009
- China
- Key Laboratory of Drug Quality Control and Pharmacovigilance
| | - Li-li Xu
- Jiangsu Key Laboratory of Drug Design and Optimization
- China Pharmaceutical University
- Nanjing 210009
- China
- Key Laboratory of Drug Quality Control and Pharmacovigilance
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Gayfulin YM, Ryzhikov MR, Samsonenko DG, Mironov YV. Electron-rich bioctahedral rhenium chalcohalide clusters [Re12CS14(µ-S)3Cl6]8− and [Re12CS14(µ-S)3Br6]8−: Synthesis, structure and properties. Polyhedron 2018. [DOI: 10.1016/j.poly.2018.05.061] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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Bharti S, Choudhary M, Mohan B, Rawat S, Sharma S, Ahmad K. Syntheses, spectroscopic characterization, SOD-like properties and antibacterial activities of dimer copper (II) and nickel (II) complexes based on imine ligands containing 2-aminothiophenol moiety: X-ray crystal structure determination of disulfide Schiff bases. J Mol Struct 2018. [DOI: 10.1016/j.molstruc.2018.03.041] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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9
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Roy S, Mondal KC, Kundu S, Li B, Schürmann CJ, Dutta S, Koley D, Herbst-Irmer R, Stalke D, Roesky HW. Two Structurally Characterized Conformational Isomers with Different C−P Bonds. Chemistry 2017. [DOI: 10.1002/chem.201702870] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Sudipta Roy
- Institut für Anorganische Chemie; Universität Göttingen; Tammannstrasse 4 37077 Göttingen Germany
- Dept. of Chemistry; IISER Tirupati; Karakambadi Road 517507 Tirupati, Andhra Pradesh India
| | - Kartik Chandra Mondal
- Institut für Anorganische Chemie; Universität Göttingen; Tammannstrasse 4 37077 Göttingen Germany
- IIT Madras; Chennai India
| | - Subrata Kundu
- Institut für Anorganische Chemie; Universität Göttingen; Tammannstrasse 4 37077 Göttingen Germany
| | - Bin Li
- Institut für Anorganische Chemie; Universität Göttingen; Tammannstrasse 4 37077 Göttingen Germany
| | - Christian J. Schürmann
- Institut für Anorganische Chemie; Universität Göttingen; Tammannstrasse 4 37077 Göttingen Germany
| | - Sayan Dutta
- Dept. of Chemical Sciences; IISER Kolkata; Mohanpur 741246 India
| | - Debasis Koley
- Dept. of Chemical Sciences; IISER Kolkata; Mohanpur 741246 India
| | - Regine Herbst-Irmer
- Institut für Anorganische Chemie; Universität Göttingen; Tammannstrasse 4 37077 Göttingen Germany
| | - Dietmar Stalke
- Institut für Anorganische Chemie; Universität Göttingen; Tammannstrasse 4 37077 Göttingen Germany
| | - Herbert W. Roesky
- Institut für Anorganische Chemie; Universität Göttingen; Tammannstrasse 4 37077 Göttingen Germany
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Tidey JP, Wong HLS, McMaster J, Schröder M, Blake AJ. High-pressure studies of three polymorphs of a palladium(II) oxathioether macrocyclic complex. ACTA CRYSTALLOGRAPHICA SECTION B, STRUCTURAL SCIENCE, CRYSTAL ENGINEERING AND MATERIALS 2016; 72:357-371. [PMID: 27240767 DOI: 10.1107/s2052520616007435] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/17/2016] [Accepted: 05/04/2016] [Indexed: 06/05/2023]
Abstract
The three reported phases of the mononuclear macrocyclic Pd(II) complex [PdCl2([9]aneS2O)] [(1); [9]aneS2O = 1-oxa-4,7-dithiacyclononane] were each studied up to pressures exceeding 9 GPa using high-pressure single-crystal X-ray diffraction. The α- and γ-phases both exhibit smooth compression of the unit-cell parameters with third-order Birch-Murnaghan bulk moduli of 14.4 (8) and 7.6 (6) GPa, respectively. Between 6.81 and 6.87 GPa β-[PdCl2([9]aneS2O)] was found to undergo a reversible transition to a phase denoted as β' and characterized by a tripling of the unit-cell volume. Across the phase transition, rearrangement of the conformation of the bound macrocycle at two of the resulting three unique sites gives rise to an extensively disordered structure.
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Affiliation(s)
- Jeremiah P Tidey
- School of Chemistry, The University of Nottingham, University Park, Nottingham NG7 2RD, England
| | - Henry L S Wong
- School of Chemistry, The University of Nottingham, University Park, Nottingham NG7 2RD, England
| | - Jonathan McMaster
- School of Chemistry, The University of Nottingham, University Park, Nottingham NG7 2RD, England
| | - Martin Schröder
- School of Chemistry, The University of Nottingham, University Park, Nottingham NG7 2RD, England
| | - Alexander J Blake
- School of Chemistry, The University of Nottingham, University Park, Nottingham NG7 2RD, England
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