1
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Sleep JA, Miklavcic SJ, Juhasz AL. Modelling of PFAS-surface interactions: Effect of surface charge and solution ions. CHEMOSPHERE 2023; 319:137910. [PMID: 36706812 DOI: 10.1016/j.chemosphere.2023.137910] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/17/2022] [Revised: 12/01/2022] [Accepted: 01/17/2023] [Indexed: 06/18/2023]
Abstract
PER-: and poly-fluoroalkyl substances (PFAS) are a class of substances of increasing concern as environmental contaminants. The interactions between PFAS and surfaces play an important role in PFAS transport and remediation. Previous studies have found PFAS adsorption to be dependent upon properties including pH, organic matter and particle size, along with PFAS functional group and carbon chain length. It is hypothesised that a theoretical examination of PFAS-surface interactions, via Monte Carlo molecular simulation, would show differences resulting from changes in surface charge, H+, OH-, Ca2+ concentrations and PFAS carbon chain length. Monte Carlo molecular simulations of perfluorooctane and perfluorobutane sulfonic acids interacting with a graphite surface in an aqueous medium were performed. Variations in surface charge, H+, OH- and Ca2+ concentrations were made. The distance-dependent density of molecules from the surface was analysed as a proxy for PFAS adsorption to the surface. Simulation results showed differences in surface behaviour that depended on surface charge, H+, OH- and Ca2+ concentrations, along with carbon chain length, with surface charge playing the most prominent role in controlling PFAS adsorption. For negatively charged surfaces, adsorption due to divalent cation bridging was observed in Ca2+ solutions. Modelling, such as in this study, of the thermodynamic equilibrium behaviour of low concentrations of molecules, in scenarios where both adsorption and mobility of PFAS occur, can aid in the design and testing of sorptive surfaces for amendment-based PFAS remediation.
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Affiliation(s)
- Julie A Sleep
- Future Industries Institute, University of South Australia, Mawson Lakes, SA, 5095, Australia.
| | - Stanley J Miklavcic
- Phenomics and Bioinformatics Research Centre, University of South Australia, Mawson Lakes, SA, 5095, Australia.
| | - Albert L Juhasz
- Future Industries Institute, University of South Australia, Mawson Lakes, SA, 5095, Australia.
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2
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Wang YL, Li B, Sarman S, Mocci F, Lu ZY, Yuan J, Laaksonen A, Fayer MD. Microstructural and Dynamical Heterogeneities in Ionic Liquids. Chem Rev 2020; 120:5798-5877. [PMID: 32292036 PMCID: PMC7349628 DOI: 10.1021/acs.chemrev.9b00693] [Citation(s) in RCA: 197] [Impact Index Per Article: 49.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2019] [Indexed: 12/11/2022]
Abstract
Ionic liquids (ILs) are a special category of molten salts solely composed of ions with varied molecular symmetry and charge delocalization. The versatility in combining varied cation-anion moieties and in functionalizing ions with different atoms and molecular groups contributes to their peculiar interactions ranging from weak isotropic associations to strong, specific, and anisotropic forces. A delicate interplay among intra- and intermolecular interactions facilitates the formation of heterogeneous microstructures and liquid morphologies, which further contributes to their striking dynamical properties. Microstructural and dynamical heterogeneities of ILs lead to their multifaceted properties described by an inherent designer feature, which makes ILs important candidates for novel solvents, electrolytes, and functional materials in academia and industrial applications. Due to a massive number of combinations of ion pairs with ion species having distinct molecular structures and IL mixtures containing varied molecular solvents, a comprehensive understanding of their hierarchical structural and dynamical quantities is of great significance for a rational selection of ILs with appropriate properties and thereafter advancing their macroscopic functionalities in applications. In this review, we comprehensively trace recent advances in understanding delicate interplay of strong and weak interactions that underpin their complex phase behaviors with a particular emphasis on understanding heterogeneous microstructures and dynamics of ILs in bulk liquids, in mixtures with cosolvents, and in interfacial regions.
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Affiliation(s)
- Yong-Lei Wang
- Department
of Materials and Environmental Chemistry, Arrhenius Laboratory, Stockholm University, SE-106 91 Stockholm, Sweden
| | - Bin Li
- School
of Chemical Engineering and Technology, Sun Yat-sen University, Zhuhai 519082, P. R. China
| | - Sten Sarman
- Department
of Materials and Environmental Chemistry, Arrhenius Laboratory, Stockholm University, SE-106 91 Stockholm, Sweden
| | - Francesca Mocci
- Department
of Chemical and Geological Sciences, University
of Cagliari, I-09042 Monserrato, Italy
| | - Zhong-Yuan Lu
- State
Key Laboratory of Supramolecular Structure and Materials, Institute
of Theoretical Chemistry, Jilin University, Changchun 130021, P. R. China
| | - Jiayin Yuan
- Department
of Materials and Environmental Chemistry, Arrhenius Laboratory, Stockholm University, SE-106 91 Stockholm, Sweden
| | - Aatto Laaksonen
- Department
of Materials and Environmental Chemistry, Arrhenius Laboratory, Stockholm University, SE-106 91 Stockholm, Sweden
- State
Key Laboratory of Materials-Oriented and Chemical Engineering, Nanjing Tech University, Nanjing 210009, P. R. China
- Centre of
Advanced Research in Bionanoconjugates and Biopolymers, Petru Poni Institute of Macromolecular Chemistry Aleea Grigore Ghica-Voda, 41A, 700487 Iasi, Romania
- Department
of Engineering Sciences and Mathematics, Division of Energy Science, Luleå University of Technology, SE-97187 Luleå, Sweden
| | - Michael D. Fayer
- Department
of Chemistry, Stanford University, Stanford, California 94305, United States
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3
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Turner AH, Byrne EL, Pereira T, Holbrey JD. Enhanced extraction of phenol from model oils using ionic liquids elucidated with neutron diffraction. Phys Chem Chem Phys 2020; 22:10219-10226. [PMID: 32350490 DOI: 10.1039/d0cp01013h] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Aromatic cation ionic liquids (ILs) based on alkylpyridiniums are shown to be good phenol extractants from model oils (hexane/toluene). ILs with hard basic anions are found to have best extraction efficiency consistent with tetraalkylammonium salts ([NR4]X). Key extraction interactions were analysed using small angle neutron diffraction. Trifluoromethanesulphonate ([OTf]- or triflate) anions provide the synergistic effects of reduced cation-phenol centre of mass (COM) distances and increased hydrogen bonding that are linked to the improved extraction efficiency. Increases in cation electron density (methylpyridinium ([Me-Py]+) vs. methylpicolinium ([Me-3-Pic]+)) also reduce cation-phenol COM interaction lengths consistent with small increases in extraction efficiency for the same ionic liquids.
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Affiliation(s)
- Adam H Turner
- The QUILL Research Centre, School of Chemistry and Chemical Engineering, Queen's University Belfast, Belfast BT9 5AG, UK. and Department of Chemistry, Ateneo de Manila University, Quezon City 1108, Philippines.
| | - Emily L Byrne
- The QUILL Research Centre, School of Chemistry and Chemical Engineering, Queen's University Belfast, Belfast BT9 5AG, UK.
| | - Thaise Pereira
- The QUILL Research Centre, School of Chemistry and Chemical Engineering, Queen's University Belfast, Belfast BT9 5AG, UK.
| | - John D Holbrey
- The QUILL Research Centre, School of Chemistry and Chemical Engineering, Queen's University Belfast, Belfast BT9 5AG, UK.
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4
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Gilmore M, Moura LM, Turner AH, Swadźba-Kwaśny M, Callear SK, McCune JA, Scherman OA, Holbrey JD. A comparison of choline:urea and choline:oxalic acid deep eutectic solvents at 338 K. J Chem Phys 2018; 148:193823. [DOI: 10.1063/1.5010246] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Affiliation(s)
- Mark Gilmore
- School of Chemistry and Chemical Engineering, The Queen’s University of Belfast, Belfast BT9 5AG, Northern Ireland,
United Kingdom
| | - Leila M. Moura
- School of Chemistry and Chemical Engineering, The Queen’s University of Belfast, Belfast BT9 5AG, Northern Ireland,
United Kingdom
| | - Adam H. Turner
- School of Chemistry and Chemical Engineering, The Queen’s University of Belfast, Belfast BT9 5AG, Northern Ireland,
United Kingdom
| | - Małgorzata Swadźba-Kwaśny
- School of Chemistry and Chemical Engineering, The Queen’s University of Belfast, Belfast BT9 5AG, Northern Ireland,
United Kingdom
| | - Samantha K. Callear
- ISIS, Rutherford Appleton Laboratory, Harwell Science and Innovation Campus, Didcot, Oxfordshire OX11 0DE,
United Kingdom
| | - Jade A. McCune
- Melville Laboratory for Polymer Synthesis, Department of Chemistry, University of Cambridge, Lensfield Road,
Cambridge CB2 1EW, United Kingdom
| | - Oren A. Scherman
- Melville Laboratory for Polymer Synthesis, Department of Chemistry, University of Cambridge, Lensfield Road,
Cambridge CB2 1EW, United Kingdom
| | - John D. Holbrey
- School of Chemistry and Chemical Engineering, The Queen’s University of Belfast, Belfast BT9 5AG, Northern Ireland,
United Kingdom
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5
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Turner AH, Imberti S, Swadźba-Kwaśny M, Holbrey JD. Applying neutron diffraction with isotopic substitution to the structure and proton-transport pathways in protic imidazolium bis{(trifluoromethyl)sulfonyl}imide ionic liquids. Faraday Discuss 2018; 206:247-263. [DOI: 10.1039/c7fd00143f] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Neutron diffraction with isotopic substitution has been applied to examine the potential for complex-ion formation in protic imidazolium bis{(trifluoromethyl)sulfonyl}imide ionic liquids.
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Affiliation(s)
- Adam H. Turner
- School of Chemistry and Chemical Engineering
- The Queen’s University of Belfast
- Belfast
- UK
| | - Silvia Imberti
- ISIS
- Rutherford Appleton Laboratory
- Harwell Science & Innovation Campus
- Didcot
- UK
| | | | - John D. Holbrey
- School of Chemistry and Chemical Engineering
- The Queen’s University of Belfast
- Belfast
- UK
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6
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Russina O, Triolo A. Ionic Liquids and Neutron Scattering. NEUTRON SCATTERING - APPLICATIONS IN BIOLOGY, CHEMISTRY, AND MATERIALS SCIENCE 2017. [DOI: 10.1016/b978-0-12-805324-9.00004-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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7
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Neale AR, Li P, Jacquemin J, Goodrich P, Ball SC, Compton RG, Hardacre C. Effect of cation structure on the oxygen solubility and diffusivity in a range of bis{(trifluoromethyl)sulfonyl}imide anion based ionic liquids for lithium–air battery electrolytes. Phys Chem Chem Phys 2016; 18:11251-62. [DOI: 10.1039/c5cp07160g] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Electrochemical measurements of oxygen mobility and solubility in a series of related [TFSI]−-based ILs relating to cation structure and physical properties of the ILs.
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Affiliation(s)
- Alex R. Neale
- The School of Chemistry and Chemical Engineering
- Queen's University of Belfast
- Belfast BT9 5AG
- UK
| | - Peilin Li
- Department of Chemistry
- Physical and Theoretical Chemistry Laboratory
- Oxford University
- Oxford OX1 3QZ
- UK
| | - Johan Jacquemin
- The School of Chemistry and Chemical Engineering
- Queen's University of Belfast
- Belfast BT9 5AG
- UK
| | - Peter Goodrich
- The School of Chemistry and Chemical Engineering
- Queen's University of Belfast
- Belfast BT9 5AG
- UK
| | - Sarah C. Ball
- Johnson Matthey Technology Centre
- Blounts Court
- Reading
- UK
| | - Richard G. Compton
- Department of Chemistry
- Physical and Theoretical Chemistry Laboratory
- Oxford University
- Oxford OX1 3QZ
- UK
| | - Christopher Hardacre
- The School of Chemistry and Chemical Engineering
- Queen's University of Belfast
- Belfast BT9 5AG
- UK
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8
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Vergadou N, Androulaki E, Hill JR, Economou IG. Molecular simulations of imidazolium-based tricyanomethanide ionic liquids using an optimized classical force field. Phys Chem Chem Phys 2016; 18:6850-60. [DOI: 10.1039/c5cp05892a] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An atomistic force field is optimized to accurately predict the equilibrium and transport properties of technologically important imidazolium-based tricyanomethanide ionic liquids.
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Affiliation(s)
- Niki Vergadou
- National Center for Scientific Research “Demokritos”
- Institute of Nanoscience and Nanotechnology
- Molecular Thermodynamics and Modelling of Materials Laboratory
- Aghia Paraskevi Attikis
- Greece
| | - Eleni Androulaki
- National Center for Scientific Research “Demokritos”
- Institute of Nanoscience and Nanotechnology
- Molecular Thermodynamics and Modelling of Materials Laboratory
- Aghia Paraskevi Attikis
- Greece
| | | | - Ioannis G. Economou
- National Center for Scientific Research “Demokritos”
- Institute of Nanoscience and Nanotechnology
- Molecular Thermodynamics and Modelling of Materials Laboratory
- Aghia Paraskevi Attikis
- Greece
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9
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Affiliation(s)
- Robert Hayes
- Discipline
of Chemistry, The University of Newcastle, NSW 2308, Callaghan, Australia
| | - Gregory G. Warr
- School
of Chemistry, The University of Sydney, NSW 2006, Sydney, Australia
| | - Rob Atkin
- Discipline
of Chemistry, The University of Newcastle, NSW 2308, Callaghan, Australia
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10
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Leys J, Tripathi CSP, Glorieux C, Zahn S, Kirchner B, Longuemart S, Lethesh KC, Nockemann P, Dehaen W, Binnemans K. Electrical conductivity and glass formation in nitrile-functionalized pyrrolidinium bis(trifluoromethylsulfonyl)imide ionic liquids: chain length and odd-even effects of the alkyl spacer between the pyrrolidinium ring and the nitrile group. Phys Chem Chem Phys 2015; 16:10548-57. [PMID: 24740743 DOI: 10.1039/c4cp00259h] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
The electrical conductivity of a series of pyrrolidinium bis(trifluoromethylsulfonyl)imide ionic liquids, functionalized with a nitrile (cyano) group at the end of an alkyl chain attached to the cation, was studied in the temperature range between 173 K and 393 K. The glass formation of the ionic liquids is influenced by the length of the alkyl spacer separating the nitrile function from the pyrrolidinium ring. The electrical conductivity and the viscosity do not show a monotonic dependence on the alkyl spacer length, but rather an odd-even effect. An explanation for this behavior is given, including the potential energy landscape picture for the glass transition.
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Affiliation(s)
- Jan Leys
- KU Leuven, Laboratorium voor Akoestiek en Thermische Fysica, Departement Natuurkunde en Sterrenkunde, Celestijnenlaan 200D bus 2416, 3001 Leuven, Belgium.
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11
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Turner AH, Holbrey JD. The Solution Structure of 1:2 Phenol/N-Methylpyridinium bis{(trifluoromethyl)sulfonyl}imide Liquid Mixtures. J SOLUTION CHEM 2015. [DOI: 10.1007/s10953-015-0296-2] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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12
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Norman SE, Turner AH, Youngs TGA. Structure of ionic liquids with amino acid anions via neutron diffraction. RSC Adv 2015. [DOI: 10.1039/c5ra06785e] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Total neutron scattering studies on amino acid-based ionic liquids reveal significant directional interactions between anions, especially for serinate-derived ions.
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Affiliation(s)
- S. E. Norman
- School of Chemistry and Chemical Engineering
- Queen's University Belfast
- Belfast
- UK
| | - A. H. Turner
- School of Chemistry and Chemical Engineering
- Queen's University Belfast
- Belfast
- UK
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13
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McCune JA, Turner AH, Coleman F, White CM, Callear SK, Youngs TGA, Swadźba-Kwaśny M, Holbrey JD. Association and liquid structure of pyridine–acetic acid mixtures determined from neutron scattering using a ‘free proton’ EPSR simulation model. Phys Chem Chem Phys 2015; 17:6767-77. [DOI: 10.1039/c4cp05746e] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
Hydrogen-bonded molecular acetic acid chains are observed in acid–base mixtures from small angle neutron diffraction.
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Affiliation(s)
- Jade A. McCune
- The QUILL Research Centre
- School of Chemistry and Chemical Engineering, Queen's University Belfast
- Belfast BT9 5AG
- UK
| | - Adam H. Turner
- The QUILL Research Centre
- School of Chemistry and Chemical Engineering, Queen's University Belfast
- Belfast BT9 5AG
- UK
| | - Fergal Coleman
- The QUILL Research Centre
- School of Chemistry and Chemical Engineering, Queen's University Belfast
- Belfast BT9 5AG
- UK
| | - Caithlin M. White
- The QUILL Research Centre
- School of Chemistry and Chemical Engineering, Queen's University Belfast
- Belfast BT9 5AG
- UK
| | | | | | - Małgorzata Swadźba-Kwaśny
- The QUILL Research Centre
- School of Chemistry and Chemical Engineering, Queen's University Belfast
- Belfast BT9 5AG
- UK
| | - John D. Holbrey
- The QUILL Research Centre
- School of Chemistry and Chemical Engineering, Queen's University Belfast
- Belfast BT9 5AG
- UK
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14
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Nguyen VD, McCormick CA, Koplitz LV, Mague JT. 4-Cyano-1-methyl-pyridinium perchlor-ate. Acta Crystallogr Sect E Struct Rep Online 2014; 70:o756-o757. [PMID: 25161550 PMCID: PMC4120629 DOI: 10.1107/s1600536814012860] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2014] [Accepted: 06/03/2014] [Indexed: 06/03/2023]
Abstract
The title salt, C7H7N2 (+)·ClO4 (-), crystallizes with alternating cations and anions in wavy sheets, which are formed by a number of C-H⋯O and C-H⋯N hydrogen bonds, lying approximately parallel to (001).
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Affiliation(s)
- Vu D. Nguyen
- Department of Chemistry, Loyola University, New Orleans, LA 70118, USA
| | | | - Lynn V. Koplitz
- Department of Chemistry, Loyola University, New Orleans, LA 70118, USA
| | - Joel T. Mague
- Department of Chemistry, Tulane University, New Orleans, LA 70118, USA
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15
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Moriya M, Watanabe T, Nabeno S, Sakamoto W, Yogo T. Crystal Structure and Solid-state Ionic Conductivity of Cyclic Sulfonylamide Salts with Cyano-substituted Quaternary Ammonium Cations. CHEM LETT 2014. [DOI: 10.1246/cl.130874] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Makoto Moriya
- EcoTopia Science Institute, Nagoya University
- JST PRESTO
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16
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McCormick CA, Nguyen VD, Renfro HE, Koplitz LV, Mague JT. 4-Cyano-1-methyl-pyridinium nitrate. Acta Crystallogr Sect E Struct Rep Online 2013; 69:o981-2. [PMID: 23795134 PMCID: PMC3685115 DOI: 10.1107/s1600536813014025] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2013] [Accepted: 05/20/2013] [Indexed: 11/19/2022]
Abstract
The title mol-ecular salt, C7H7N2 (+)·NO3 (-), displays an inter-penetrating sheet structure parallel to a with each sheet containing nearly coplanar cations and anions, each ion being bis-ected by a crystallographic mirror plane. C-H⋯O hydrogen bonds involving both ring and methyl H atoms in addition to cation-cation C-H⋯N hydrogen bonds (ring H to cyano N) serve to link the sheets together. In each set of parallel layers, the cations and anions stack with short distances of 3.094 (2) (between aligned nitrate N and pyridine N atoms) and 3.057 (2) Å (between a nitrate O atom and the ring centroid). This motif is strikingly similar to the one that features in the isomeric salt 2-cyano-1-methyl-pyridinium nitrate.
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Affiliation(s)
| | - Vu D. Nguyen
- Department of Chemistry, Loyola University, New Orleans, LA 70118, USA
| | - Heather E. Renfro
- Department of Chemistry, Loyola University, New Orleans, LA 70118, USA
| | - Lynn V. Koplitz
- Department of Chemistry, Loyola University, New Orleans, LA 70118, USA
| | - Joel T. Mague
- Department of Chemistry, Tulane University, New Orleans, LA 70118, USA
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17
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Mahadevi AS, Sastry GN. Cation-π interaction: its role and relevance in chemistry, biology, and material science. Chem Rev 2012; 113:2100-38. [PMID: 23145968 DOI: 10.1021/cr300222d] [Citation(s) in RCA: 738] [Impact Index Per Article: 61.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- A Subha Mahadevi
- Molecular Modeling Group, CSIR-Indian Institute of Chemical Technology Tarnaka, Hyderabad 500 607, Andhra Pradesh, India
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18
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Sano S, Beier MJ, Mallat T, Baiker A. Potential of ionic liquids as co-modifiers in asymmetric hydrogenation on platinum. ACTA ACUST UNITED AC 2012. [DOI: 10.1016/j.molcata.2012.01.029] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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19
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Schröder C. Comparing reduced partial charge models with polarizable simulations of ionic liquids. Phys Chem Chem Phys 2012; 14:3089-102. [PMID: 22287020 PMCID: PMC7613810 DOI: 10.1039/c2cp23329k] [Citation(s) in RCA: 175] [Impact Index Per Article: 14.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Molecular ionic liquids are typically characterized by strong electrostatic interactions resulting in a charge ordering and retardation of their translational and rotational behaviour. Unfortunately, this effect is often overestimated in classical molecular dynamics simulations. This can be circumvented in a twofold way: the easiest way is to reduce the partial charges of the ions to sub-integer values of ±0.7-0.9 e. The more realistic model is to include polarizable forces, e.g. Drude-oscillators, but it comes along with an increasing computational effort. On the other hand, charge-scaled models are claimed to take an average polarizability into account. But do both models have the same impact on structure and dynamics of molecular ionic liquids? In the present study several molecular dynamics simulations of 1-ethyl-3-methylimidazolium trifluoromethanesulfonate are performed with different levels of polarization as well as with varying charge scaling factors of 0.74 to 0.90. The analysis of the structural and dynamical results are performed in different levels: from the atomic point of view over the molecular level to collective properties determined by the complete sample.
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Affiliation(s)
- Christian Schröder
- University of Vienna, Department of Computational Biological Chemistry, Austria Währingerstrasse 17, A-1090 Vienna, Austria.
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20
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Cao Z, Li S, Yan T. Cation-π Interactions between a Free-Base Porphyrin and an Ionic Liquid: A Computational Study. Chemphyschem 2012; 13:1743-7. [DOI: 10.1002/cphc.201100868] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2011] [Indexed: 11/08/2022]
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21
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Umebayashi Y, Hamano H, Seki S, Minofar B, Fujii K, Hayamizu K, Tsuzuki S, Kameda Y, Kohara S, Watanabe M. Liquid Structure of and Li+ Ion Solvation in Bis(trifluoromethanesulfonyl)amide Based Ionic Liquids Composed of 1-Ethyl-3-methylimidazolium and N-Methyl-N-propylpyrrolidinium Cations. J Phys Chem B 2011; 115:12179-91. [DOI: 10.1021/jp2072827] [Citation(s) in RCA: 96] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Yasuhiro Umebayashi
- Department of Chemistry, Faculty of Science, Kyushu University, Hakozaki, Higashi-ku, Fukuoka 812-8581, Japan
| | - Hiroshi Hamano
- Department of Chemistry, Faculty of Science, Kyushu University, Hakozaki, Higashi-ku, Fukuoka 812-8581, Japan
| | - Shiro Seki
- Materials Science Research Laboratory, Central Research Institute of Electric Power Industry (CRIEPI), 2-11-1, Iwado-kita, Komae, Tokyo 201-8511, Japan
| | - Babak Minofar
- Department of Chemistry, Faculty of Science, Kyushu University, Hakozaki, Higashi-ku, Fukuoka 812-8581, Japan
| | - Kenta Fujii
- Neutron Scattering Laboratory, Institute for Solid State Physics, The University of Tokyo, Kashiwa, Chiba 277-8581, Japan
| | - Kikuko Hayamizu
- National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba Center, Tsukuba, Ibaraki, 305-8565, Japan
| | - Seiji Tsuzuki
- National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba Center, Tsukuba, Ibaraki, 305-8565, Japan
| | - Yasuo Kameda
- Department of Material and Biological Chemistry, Faculty of Science, Yamagata University, 1-4-12 Kojirakawa-machi, Yamagata 990-8560, Japan
| | - Shinji Kohara
- Japan Synchrotron Radiation Research Institute (JASRI), Sayo-cho, Sayo-gun, Hyogo 679-5198, Japan
| | - Masayoshi Watanabe
- Department of Chemistry and Biotechnology, Yokohama National University, 79-5 Tokiwadai Hodogaya-ku, Yokohama 240-8501, Japan
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22
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Lethesh KC, Van Hecke K, Van Meervelt L, Nockemann P, Kirchner B, Zahn S, Parac-Vogt TN, Dehaen W, Binnemans K. Nitrile-Functionalized Pyridinium, Pyrrolidinium, and Piperidinium Ionic Liquids. J Phys Chem B 2011; 115:8424-38. [DOI: 10.1021/jp2027675] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
| | - Kristof Van Hecke
- Department of Chemistry, Katholieke Universiteit Leuven, Celestijnenlaan 200F, P.O. Box 2404, B-3001 Heverlee, Belgium
| | - Luc Van Meervelt
- Department of Chemistry, Katholieke Universiteit Leuven, Celestijnenlaan 200F, P.O. Box 2404, B-3001 Heverlee, Belgium
| | - Peter Nockemann
- The QUILL Research Centre, School of Chemistry and Chemical Engineering, David Keir Building, Stranmillis Road, Queen’s University Belfast, Belfast BT9 5AG, United Kingdom
| | - Barbara Kirchner
- Wilhelm-Ostwald-Institut für Physikalische und Theoretische Chemie, Universität Leipzig, Linnéstrasse 2, D-04103 Leipzig, Germany
| | - Stefan Zahn
- Wilhelm-Ostwald-Institut für Physikalische und Theoretische Chemie, Universität Leipzig, Linnéstrasse 2, D-04103 Leipzig, Germany
| | - Tatjana N. Parac-Vogt
- Department of Chemistry, Katholieke Universiteit Leuven, Celestijnenlaan 200F, P.O. Box 2404, B-3001 Heverlee, Belgium
| | - Wim Dehaen
- Department of Chemistry, Katholieke Universiteit Leuven, Celestijnenlaan 200F, P.O. Box 2404, B-3001 Heverlee, Belgium
| | - Koen Binnemans
- Department of Chemistry, Katholieke Universiteit Leuven, Celestijnenlaan 200F, P.O. Box 2404, B-3001 Heverlee, Belgium
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Dou Q, Sha ML, Fu HY, Wu GZ. Molecular dynamics simulation of the interfacial structure of [C(n)mim][PF6] adsorbed on a graphite surface: effects of temperature and alkyl chain length. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2011; 23:175001. [PMID: 21474885 DOI: 10.1088/0953-8984/23/17/175001] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
The structures and diffusion behaviors of a series of ionic liquids [C(n)mim][PF(6)] (n = 1, 4, 8 and 12) on a graphite surface have been investigated by means of molecular dynamics simulation. It was found that three or four ordering layers of ionic liquids were formed near the graphite surface, and this layering structure was stable over the temperature range investigated. At the liquid/vacuum interface, the ionic liquid with a butyl chain had a monolayer ordering surface, while [C(8)mim][PF(6)] and [C(12)mim][PF(6)] exhibited a bilayer ordering with a polar domain sandwiched between two orientational nonpolar domains. More impressively, the simulated results showed that for the ionic liquids with alkyl chains longer than C(4), the adjacent alkyl chains in the whole film tended to be parallel to each other, with the imidazolium rings packed closely together. This indicated that the ionic liquids have a better regulated short-range structure than was previously expected. It was also found that both in the bottom layer and in the bulk region, the diffusion of the alkyl chains was much faster than that of the polar groups. However, as the alkyl chain length increased, the charge delocalization in the cation and the enhanced van der Waals interaction between the nonpolar groups contributed by reducing this difference in the diffusivity of major groups.
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Affiliation(s)
- Q Dou
- Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, People's Republic of China.
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24
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Youngs TGA, Holbrey JD, Mullan CL, Norman SE, Lagunas MC, D'Agostino C, Mantle MD, Gladden LF, Bowron DT, Hardacre C. Neutron diffraction, NMR and molecular dynamics study of glucose dissolved in the ionic liquid 1-ethyl-3-methylimidazolium acetate. Chem Sci 2011. [DOI: 10.1039/c1sc00241d] [Citation(s) in RCA: 110] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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Forsyth SA, Fröhlich U, Goodrich P, Gunaratne HQN, Hardacre C, McKeown A, Seddon KR. Functionalised ionic liquids: synthesis of ionic liquids with tethered basic groups and their use in Heck and Knoevenagel reactions. NEW J CHEM 2010. [DOI: 10.1039/b9nj00729f] [Citation(s) in RCA: 59] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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26
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