1
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Požar M, Lovrinčević B, Perera A. The influence of charge ordering in the microscopic structure of monohydroxy alcohols. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2024; 36:265102. [PMID: 38537282 DOI: 10.1088/1361-648x/ad3870] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/24/2023] [Accepted: 03/27/2024] [Indexed: 04/06/2024]
Abstract
While radiation scattering data provides insight inside the microstructure of liquids, the Debye relation relating the scattering intensityI(k) to the atom-atom structure factorsSab(k)shows that, ultimately, it is these individual structure correlation functions which contain the relevant information about the micro-structure. However, these quantities are not observables, except in few cases where one can invert the Debye relation to obtain the structure functions. In the majority of other cases, the need for model dependent computer simulations is unavoidable. The resulting calculations reveal that the scattering pre-peak is the result of cancellations between positive pre-peaks and negative anti-peaks contributions from the atom-atom structure factors. What of systems where this cancellation is such that it entirely suppresses the scattering pre-peak? One would be tempted to falsely conclude that there is no underlying micro-heterogeneity. Hence, the structure functions appear as hidden variables, and it is important to understand the relation between their features and the micro-structure of the system. Through the computer simulation study of various mono-ols, ranging from methanol to 1-nonanol, as well as the branched octanols, we show how the features of the atom-atom pair correlation functiongab(r)affect that of the structure factorsSab(k), and reveal that the micro-structure is ultimately the result of the charge ordering between different atoms in the system.
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Affiliation(s)
- Martina Požar
- Department of Physics, Faculty of Science, University of Split, Rudjera Boškovića 33, 21000 Split, Croatia
| | - Bernarda Lovrinčević
- Department of Physics, Faculty of Science, University of Split, Rudjera Boškovića 33, 21000 Split, Croatia
| | - Aurélien Perera
- Department of Physics, Faculty of Science, University of Split, Rudjera Boškovića 33, 21000 Split, Croatia
- Laboratoire de Physique Théorique de la Matière Condensée (UMR CNRS 7600), Sorbonne Université, 4 Place Jussieu, F75252 Paris cedex 05, France
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2
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Liquid structure of a water-based, hydrophobic and natural deep eutectic solvent: the case of thymol-water. A Molecular Dynamics study. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.121151] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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3
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Oleochemical Carbonates: a Comprehensive Characterization of an Emerging Class of Organic Compounds. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.120854] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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4
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Triolo A, Di Pietro ME, Mele A, Lo Celso F, Brehm M, Di Lisio V, Martinelli A, Chater P, Russina O. Liquid structure and dynamics in the choline acetate:urea 1:2 deep eutectic solvent. J Chem Phys 2021; 154:244501. [PMID: 34241369 DOI: 10.1063/5.0054048] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
We report on the thermodynamic, structural, and dynamic properties of a recently proposed deep eutectic solvent, formed by choline acetate (ChAc) and urea (U) at the stoichiometric ratio 1:2, hereinafter indicated as ChAc:U. Although the crystalline phase melts at 36-38 °C depending on the heating rate, ChAc:U can be easily supercooled at sub-ambient conditions, thus maintaining at the liquid state, with a glass-liquid transition at about -50 °C. Synchrotron high energy x-ray scattering experiments provide the experimental data for supporting a reverse Monte Carlo analysis to extract structural information at the atomistic level. This exploration of the liquid structure of ChAc:U reveals the major role played by hydrogen bonding in determining interspecies correlations: both acetate and urea are strong hydrogen bond acceptor sites, while both choline hydroxyl and urea act as HB donors. All ChAc:U moieties are involved in mutual interactions, with acetate and urea strongly interacting through hydrogen bonding, while choline being mostly involved in van der Waals mediated interactions. Such a structural situation is mirrored by the dynamic evidences obtained by means of 1H nuclear magnetic resonance techniques, which show how urea and acetate species experience higher translational activation energy than choline, fingerprinting their stronger commitments into the extended hydrogen bonding network established in ChAc:U.
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Affiliation(s)
- Alessandro Triolo
- Laboratorio Liquidi Ionici, Istituto Struttura della Materia, Consiglio Nazionale delle Ricerche (ISM-CNR), Rome, Italy
| | - Maria Enrica Di Pietro
- Department of Chemistry, Materials and Chemical Engineering "G. Natta," Politecnico di Milano, Milano, Italy
| | - Andrea Mele
- Department of Chemistry, Materials and Chemical Engineering "G. Natta," Politecnico di Milano, Milano, Italy
| | - Fabrizio Lo Celso
- Laboratorio Liquidi Ionici, Istituto Struttura della Materia, Consiglio Nazionale delle Ricerche (ISM-CNR), Rome, Italy
| | - Martin Brehm
- Institut für Chemie, Martin-Luther-Universität Halle-Wittenberg, Halle (Saale), Germany
| | - Valerio Di Lisio
- Department of Chemistry, University of Rome Sapienza, Rome, Italy
| | | | - Philip Chater
- Diamond House, Harwell Science and Innovation Campus, Diamond Light Source, Ltd., Didcot, Oxfordshire OX11 0DE, United Kingdom
| | - Olga Russina
- Laboratorio Liquidi Ionici, Istituto Struttura della Materia, Consiglio Nazionale delle Ricerche (ISM-CNR), Rome, Italy
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5
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Koverga V, Maity N, Miannay FA, Kalugin ON, Juhasz A, Świątek A, Polok K, Takamuku T, Jedlovszky P, Idrissi A. Voronoi Polyhedra as a Tool for the Characterization of Inhomogeneous Distribution in 1-Butyl-3-methylimidazolium Cation-Based Ionic Liquids. J Phys Chem B 2020; 124:10419-10434. [PMID: 33151074 DOI: 10.1021/acs.jpcb.0c07398] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The inhomogeneity distribution in four imidazolium-based ionic liquids (ILs) containing the 1-butyl-3-methylimidazolium (C4mim) cation, coupled with tetrafluoroborate (BF4), hexafluorophosphate (PF6), bis(trifluoromethanesulfonyl)amide (TFSA), and trifluoromethanesulfonate (TfO) anions, was characterized using Voronoi polyhedra. For this purpose, molecular dynamic simulations have been performed on the isothermal-isobaric (NpT) ensemble. We checked the ability of the potential models to reproduce the experimental density, heat of vaporization, and transport properties (diffusion and viscosity) of these ionic liquids. The inhomogeneity distribution of ions around the ring, methyl, and butyl chain terminal hydrogen atoms of the C4mim cation was investigated by means of Voronoi polyhedra analysis. For this purpose, the position of the C4mim cation was described successively by the ring, methyl, and butyl chain terminal hydrogen atoms, while that of the anions was described by their F or O atom. We calculated the Voronoi polyhedra distributions of the volume, the density, and the asphericity parameters as well as that of the radius of the spherical intermolecular voids. We carried out the analysis in two steps. In the first step, both ions were taken into account. The calculated distributions gave information on the neighboring ions around a reference one. In the second step, to distinguish between like and oppositely charged ions and then to get information on the inhomogeneity distribution of the like ions, we repeated the same calculations on the same sample configurations and removed one of the ions and considered only the other one. Detailed analysis of these distributions has revealed that the ring hydrogen atoms are mainly solvated by the anions, while the methyl and butyl terminal H atoms are surrounded by like atoms. The extent of this inhomogeneity was assessed by calculating the cluster size distribution that shows that the dimers are the most abundant ones.
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Affiliation(s)
- Volodymyr Koverga
- Laboratoire de Spectrochimie Infrarouge et Raman, UMR CNRS A8516, Université de Lille, Science et Technologies, 59655 Villeneuve d'Ascq Cedex, France.,Institut des Sciences Analytiques et de Physico-Chimie pour l'Environnement et les Matériaux (IPREM), Université de Pau et des Pays de l'Adour, Technopôle Helioparc, 2, Avenue Pierre Angot, 64053 Pau Cedex 9, Nouvelle Aquitaine, France
| | - Nishith Maity
- Laboratoire de Spectrochimie Infrarouge et Raman, UMR CNRS A8516, Université de Lille, Science et Technologies, 59655 Villeneuve d'Ascq Cedex, France
| | - François Alexandre Miannay
- Laboratoire de Spectrochimie Infrarouge et Raman, UMR CNRS A8516, Université de Lille, Science et Technologies, 59655 Villeneuve d'Ascq Cedex, France
| | - Oleg N Kalugin
- Department of Inorganic Chemistry, V.N. Karazin Kharkiv National University, Svoboda Square 4, Kharkiv 61022, Ukraine
| | - Akos Juhasz
- Laboratory of Nanochemistry, Department of Biophysics Radiation Biology, Semmelweis University, Nagyvárad tér 4, Budapest 1089, Hungary
| | - Adam Świątek
- Laboratory of Spectroscopy and Intermolecular Interactions, Department of Chemistry, University of Warsaw, ul. Żwirki i Wigury 101, 02-089 Warsaw, Poland
| | - Kamil Polok
- Laboratory of Spectroscopy and Intermolecular Interactions, Department of Chemistry, University of Warsaw, ul. Żwirki i Wigury 101, 02-089 Warsaw, Poland
| | - Toshiyuki Takamuku
- Department of Chemistry and Applied Chemistry, Faculty of Science and Engineering, Saga University, Honjo-machi, Saga 840-8502, Japan
| | - Pál Jedlovszky
- Department of Chemistry, Eszterházy Károly University, Leányka utca 6, H-3300 Eger, Hungary
| | - Abdenacer Idrissi
- Laboratoire de Spectrochimie Infrarouge et Raman, UMR CNRS A8516, Université de Lille, Science et Technologies, 59655 Villeneuve d'Ascq Cedex, France
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6
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Lo Celso F, Appetecchi GB, Simonetti E, Zhao M, Castner EW, Keiderling U, Gontrani L, Triolo A, Russina O. Microscopic Structural and Dynamic Features in Triphilic Room Temperature Ionic Liquids. Front Chem 2019; 7:285. [PMID: 31119123 PMCID: PMC6507529 DOI: 10.3389/fchem.2019.00285] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2018] [Accepted: 04/08/2019] [Indexed: 01/20/2023] Open
Abstract
Here we report a thorough investigation of the microscopic and mesoscopic structural organization in a series of triphilic fluorinated room temperature ionic liquids, namely [1-alkyl,3-methylimidazolium][(trifluoromethanesulfonyl)(nonafluorobutylsulfonyl)imide], with alkyl = ethyl, butyl, octyl ([Cnmim][IM14], n = 2, 4, 8), based on the synergic exploitation of X-ray and Neutron Scattering and Molecular Dynamics simulations. This study reveals the strong complementarity between X-ray/neutron scattering in detecting the complex segregated morphology in these systems at mesoscopic spatial scales. The use of MD simulations delivering a very good agreement with experimental data allows us to gain a robust understanding of the segregated morphology. The structural scenario is completed with determination of dynamic properties accessing the diffusive behavior and a relaxation map is provided for [C2mim][IM14] and [C8mim][IM14], highlighting their natures as fragile glass formers.
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Affiliation(s)
- Fabrizio Lo Celso
- Dipartimento di Fisica e Chimica, Università di Palermo, Palermo, Italy
| | | | | | - Man Zhao
- Department of Chemistry and Chemical Biology, Rutgers University, The State University of New Jersey, Newark, NJ, United States
| | - Edward W Castner
- Department of Chemistry and Chemical Biology, Rutgers University, The State University of New Jersey, Newark, NJ, United States
| | - Uwe Keiderling
- Soft Matter and Functional Materials, Helmholtz-Zentrum für Materialien und Energie GmbH, Berlin, Germany
| | - Lorenzo Gontrani
- Department of Chemistry, University of Rome Sapienza, Rome, Italy
| | - Alessandro Triolo
- Laboratorio Liquidi Ionici, Istituto Struttura della Materia, Consiglio Nazionale delle Ricerche (ISM-CNR), Rome, Italy
| | - Olga Russina
- Department of Chemistry, University of Rome Sapienza, Rome, Italy
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7
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Doughty B, Genix AC, Popov I, Li B, Zhao S, Saito T, Lutterman DA, Sacci RL, Sumpter BG, Wojnarowska Z, Bocharova V. Structural correlations tailor conductive properties in polymerized ionic liquids. Phys Chem Chem Phys 2019; 21:14775-14785. [DOI: 10.1039/c9cp02268f] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In this paper, it was demonstrated that the mobile ion (anion) size and pendant group chemistry affect the packing of the polymer chains and influence conductivity in imidazolium based PolyILs.
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Affiliation(s)
- Benjamin Doughty
- Chemical Sciences Division
- Oak Ridge National Laboratory
- Oak Ridge
- USA
| | - Anne-Caroline Genix
- Laboratoire Charles Coulomb (L2C), Université de Montpellier
- CNRS
- F-34095 Montpellier
- France
| | - Ivan Popov
- Chemical Sciences Division
- Oak Ridge National Laboratory
- Oak Ridge
- USA
| | - Bingrui Li
- Department of Chemistry
- University of Tennessee
- Knoxville
- USA
| | - Sheng Zhao
- Department of Chemistry
- University of Tennessee
- Knoxville
- USA
| | - Tomonori Saito
- Chemical Sciences Division
- Oak Ridge National Laboratory
- Oak Ridge
- USA
| | | | - Robert L. Sacci
- Chemical Sciences Division
- Oak Ridge National Laboratory
- Oak Ridge
- USA
| | - Bobby G. Sumpter
- Center for Nanophase Materials Sciences
- Oak Ridge National Laboratory
- Oak Ridge
- USA
- Computational Sciences & Engineering Division
| | - Zaneta Wojnarowska
- Chemical Sciences Division
- Oak Ridge National Laboratory
- Oak Ridge
- USA
- Institute of Physics
| | - Vera Bocharova
- Chemical Sciences Division
- Oak Ridge National Laboratory
- Oak Ridge
- USA
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8
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Wu B, Kuroda K, Takahashi K, Castner EW. Structural analysis of zwitterionic liquids vs. homologous ionic liquids. J Chem Phys 2018; 148:193807. [PMID: 30307210 DOI: 10.1063/1.5010983] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023] Open
Abstract
Zwitterionic liquids (Zw-ILs) have been developed that are homologous to monovalent ionic liquids (ILs) and show great promise for controlled dissolution of cellulosic biomass. Using both high energy X-ray scattering and atomistic molecular simulations, this article compares the bulk liquid structural properties for novel Zw-ILs with their homologous ILs. It is shown that the significant localization of the charges on Zw-ILs leads to charge ordering similar to that observed for conventional ionic liquids with monovalent anions and cations. A low-intensity first sharp diffraction peak in the liquid structure factor S(q) is observed for both the Zw-IL and the IL. This is unexpected since both the Zw-IL and IL have a 2-(2-methoxyethoxy)ethyl (diether) functional group on the cationic imidazolium ring and ether functional groups are known to suppress this peak. Detailed analyses show that this intermediate range order in the liquid structure arises for slightly different reasons in the Zw-IL vs. the IL. For the Zw-IL, the ether tails in the liquid are shown to aggregate into nanoscale domains.
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Affiliation(s)
- Boning Wu
- Department of Chemistry and Chemical Biology, Rutgers, The State University of New Jersey, Piscataway, New Jersey 08854, USA
| | - Kosuke Kuroda
- Institute of Science and Engineering, Kanazawa University, Kakuma-machi, Kanazawa 920-1192, Japan
| | - Kenji Takahashi
- Institute of Science and Engineering, Kanazawa University, Kakuma-machi, Kanazawa 920-1192, Japan
| | - Edward W Castner
- Department of Chemistry and Chemical Biology, Rutgers, The State University of New Jersey, Piscataway, New Jersey 08854, USA
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9
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Lo Celso F, Yoshida Y, Lombardo R, Jafta C, Gontrani L, Triolo A, Russina O. Mesoscopic structural organization in fluorinated room temperature ionic liquids. CR CHIM 2018. [DOI: 10.1016/j.crci.2018.02.001] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
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10
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Sani MA, Martin PA, Yunis R, Chen F, Forsyth M, Deschamps M, O'Dell LA. Probing Ionic Liquid Electrolyte Structure via the Glassy State by Dynamic Nuclear Polarization NMR Spectroscopy. J Phys Chem Lett 2018; 9:1007-1011. [PMID: 29420892 DOI: 10.1021/acs.jpclett.8b00022] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Dynamic nuclear polarization (DNP)-enhanced solid-state NMR spectroscopy has been used to study an ionic liquid salt solution (N-methyl-N-propyl-pyrrolidinium bis(fluorosulfonyl)imide, C3mpyrFSI, containing 1.0 m lithium bis(fluorosulfonyl)imide, 6LiFSI) in its glassy state at a temperature of 92 K. The incorporation of a biradical to enable DNP signal enhancement allowed the proximities of the lithium to the individual carbon sites on the pyrrolidinium cation to be probed using a 13C-6Li REDOR pulse sequence. Distributions in Li-C distances were extracted and converted into a 3D map of the locations of the Li+ relative to the C3mpyr that shows remarkably good agreement with a liquid-phase molecular dynamics simulation.
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Affiliation(s)
- Marc-Antoine Sani
- School of Chemistry, Bio21 Institute, University of Melbourne , Melbourne, Victoria 3010, Australia
| | - Pierre-Alexandre Martin
- Institute for Frontier Materials, Deakin University , Geelong, Victoria 3220, Australia
- CEMHTI, CNRS UPR 3079, Université d'Orléans , F45071 Orléans, France
- RS2E, FR CNRS 3459 , 80039 Amiens, France
| | - Ruhamah Yunis
- Institute for Frontier Materials, Deakin University , Geelong, Victoria 3220, Australia
| | - Fangfang Chen
- Institute for Frontier Materials, Deakin University , Geelong, Victoria 3220, Australia
| | - Maria Forsyth
- Institute for Frontier Materials, Deakin University , Geelong, Victoria 3220, Australia
| | - Michaël Deschamps
- CEMHTI, CNRS UPR 3079, Université d'Orléans , F45071 Orléans, France
- RS2E, FR CNRS 3459 , 80039 Amiens, France
| | - Luke A O'Dell
- Institute for Frontier Materials, Deakin University , Geelong, Victoria 3220, Australia
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11
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Kapoor U, Shah JK. Globular, Sponge-like to Layer-like Morphological Transition in 1-n-Alkyl-3-methylimidazolium Octylsulfate Ionic Liquid Homologous Series. J Phys Chem B 2017; 122:213-228. [DOI: 10.1021/acs.jpcb.7b08397] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Utkarsh Kapoor
- School of Chemical Engineering, Oklahoma State University, Stillwater, Oklahoma 74078, United States
| | - Jindal K. Shah
- School of Chemical Engineering, Oklahoma State University, Stillwater, Oklahoma 74078, United States
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12
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Abstract
Aqueous mixtures of small molecules, such as lower n-alkanols for example, are known to be micro-segregated, with domains in the nano-meter range.
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Affiliation(s)
- Aurélien Perera
- Laboratoire de Physique Théorique de la Matière Condensée (UMR CNRS 7600)
- Université Pierre et Marie Curie
- Paris cedex 05
- France
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13
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Scarpellini E, Usula M, Caminiti R. Structural characterization of propylammonium nitrate and N-methyl-2-pyrrolidone mixtures. J Mol Liq 2017. [DOI: 10.1016/j.molliq.2016.09.095] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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14
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Wu B, Yamashita Y, Endo T, Takahashi K, Castner EW. Structure and dynamics of ionic liquids: Trimethylsilylpropyl-substituted cations and bis(sulfonyl)amide anions. J Chem Phys 2016; 145:244506. [DOI: 10.1063/1.4972410] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- Boning Wu
- Department of Chemistry and Chemical Biology, Rutgers, The State University of New Jersey, Piscataway, New Jersey 08854, USA
| | - Yuki Yamashita
- Institute of Science and Engineering, Kanazawa University, Kakuma-machi, Kanazawa 920-1192, Japan
| | - Takatsugu Endo
- Institute of Science and Engineering, Kanazawa University, Kakuma-machi, Kanazawa 920-1192, Japan
| | - Kenji Takahashi
- Institute of Science and Engineering, Kanazawa University, Kakuma-machi, Kanazawa 920-1192, Japan
| | - Edward W. Castner
- Department of Chemistry and Chemical Biology, Rutgers, The State University of New Jersey, Piscataway, New Jersey 08854, USA
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15
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Mariani A, Dattani R, Caminiti R, Gontrani L. Nanoscale Density Fluctuations in Ionic Liquid Binary Mixtures with Nonamphiphilic Compounds: First Experimental Evidence. J Phys Chem B 2016; 120:10540-10546. [DOI: 10.1021/acs.jpcb.6b07295] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Alessandro Mariani
- Department
of Chemistry, “La Sapienza” University of Rome, Piazzale
Aldo Moro 5, 00185 Rome, Italy
| | - Rajeev Dattani
- Beamline
ID02, ESRF-The European Synchrotron, CS 40220, 38043 Grenoble Cedex 9, France
| | - Ruggero Caminiti
- Department
of Chemistry, “La Sapienza” University of Rome, Piazzale
Aldo Moro 5, 00185 Rome, Italy
- Centro
di Ricerca per le Nanotecnologie Applicate all’Ingegneria,
Laboratorio per le Nanotecnologie e le Nanoscienze, “La Sapienza” University of Rome, Piazzale Aldo Moro 5, 00185 Rome, Italy
| | - Lorenzo Gontrani
- Department
of Chemistry, “La Sapienza” University of Rome, Piazzale
Aldo Moro 5, 00185 Rome, Italy
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16
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Campetella M, Bovi D, Caminiti R, Guidoni L, Bencivenni L, Gontrani L. Structural and vibrational study of 2-MethoxyEthylAmmonium Nitrate (2-OMeEAN): Interpretation of experimental results with ab initio molecular dynamics. J Chem Phys 2016; 145:024507. [DOI: 10.1063/1.4956459] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- M. Campetella
- Dipartimento di Chimica, Università di Roma, “La Sapienza,” P. le Aldo Moro 5, I-00185 Roma, Italy
| | - D. Bovi
- Dipartimento di Fisica, Università di Roma, “La Sapienza,” P. le Aldo Moro 5, I-00185 Roma, Italy
| | - R. Caminiti
- Dipartimento di Chimica, Università di Roma, “La Sapienza,” P. le Aldo Moro 5, I-00185 Roma, Italy
| | - L. Guidoni
- Dipartimento di Scienze Fisiche e Chimiche, Università degli Studi dell’Aquila, Via Vetoio, Coppito, I-67100 L’Aquila, Italy
| | - L. Bencivenni
- Dipartimento di Chimica, Università di Roma, “La Sapienza,” P. le Aldo Moro 5, I-00185 Roma, Italy
| | - L. Gontrani
- Dipartimento di Chimica, Università di Roma, “La Sapienza,” P. le Aldo Moro 5, I-00185 Roma, Italy
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17
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Campetella M, Bencivenni L, Caminiti R, Zazza C, Di Trapani S, Martino A, Gontrani L. Chloromethyl-oxirane and chloromethyl-thiirane in liquid phase: A joint experimental and quantum chemical study. Chem Phys 2016. [DOI: 10.1016/j.chemphys.2016.03.027] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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18
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Hettige JJ, Araque JC, Kashyap HK, Margulis CJ. Communication: Nanoscale structure of tetradecyltrihexylphosphonium based ionic liquids. J Chem Phys 2016; 144:121102. [DOI: 10.1063/1.4944678] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
| | - Juan C. Araque
- Department of Chemistry, University of Iowa, Iowa City, Iowa 52242, USA
| | - Hemant K. Kashyap
- Department of Chemistry, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110016, India
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19
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Russina O, De Santis S, Gontrani L. Micro- and mesoscopic structural features of a bio-based choline-amino acid ionic liquid. RSC Adv 2016. [DOI: 10.1039/c6ra02142e] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
The structure of bio-based choline–norleucine ionic liquid has been explored by means of combined x-ray diffraction and MD simulations.
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Affiliation(s)
- Olga Russina
- Department of Chemistry
- University of Rome “La Sapienza”
- Rome
- Italy
| | - Serena De Santis
- Department of Chemistry
- University of Rome “La Sapienza”
- Rome
- Italy
| | - Lorenzo Gontrani
- Department of Chemistry
- University of Rome “La Sapienza”
- Rome
- Italy
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20
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Salma U, Ballirano P, Usula M, Caminiti R, Plechkova NV, Seddon KR, Gontrani L. A new insight into the nanostructure of alkylammonium alkanoates based ionic liquids in water. Phys Chem Chem Phys 2016; 18:11497-502. [DOI: 10.1039/c5cp07953e] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
In this paper, small angle X-ray scattering has been used to study a series of ionic liquids, alkylammonium alkanoates ([N0 0 0 n][CmCO2]), with varying alkyl chain lengths in the cation and the anion.
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Affiliation(s)
- Umme Salma
- Dipartimento di Chimica
- Università di Roma
- I-00185 Roma
- Italy
| | - Paolo Ballirano
- Dipartimento di Scienze della Terra
- Università di Roma
- I-00185 Roma
- Italy
| | - Marianna Usula
- Dipartimento di Scienze Chimiche e Geologiche – Università degli Studi di Cagliari
- Cittadella Universitaria di Monserrato
- I-09042 Monserrato
- Italy
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21
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Murphy T, Callear SK, Warr GG, Atkin R. Dissolved chloride markedly changes the nanostructure of the protic ionic liquids propylammonium and ethanolammonium nitrate. Phys Chem Chem Phys 2016; 18:17169-82. [DOI: 10.1039/c5cp06947e] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The bulk nanostructure of 15 mol% propylammonium chloride (PACl) dissolved in propylammonium nitrate (PAN) and 15 mol% ethanolammonium chloride (EtACl) in ethanolammonium nitrate (EtAN) has been determined using neutron diffraction with empirical potential structure refinement fits.
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Affiliation(s)
- Thomas Murphy
- Priority Research Centre for Advanced Fluids and Interfaces
- The University of Newcastle
- Callaghan
- Australia
| | | | | | - Rob Atkin
- Priority Research Centre for Advanced Fluids and Interfaces
- The University of Newcastle
- Callaghan
- Australia
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22
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Tanzi L, Ramondo F, Caminiti R, Campetella M, Di Luca A, Gontrani L. Structural studies on choline-carboxylate bio-ionic liquids by x-ray scattering and molecular dynamics. J Chem Phys 2015; 143:114506. [DOI: 10.1063/1.4931031] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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23
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Araque JC, Hettige JJ, Margulis CJ. Modern Room Temperature Ionic Liquids, a Simple Guide to Understanding Their Structure and How It May Relate to Dynamics. J Phys Chem B 2015; 119:12727-40. [DOI: 10.1021/acs.jpcb.5b05506] [Citation(s) in RCA: 225] [Impact Index Per Article: 25.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Juan C. Araque
- Department of Chemistry, University of Iowa, Iowa City, Iowa 52242, United States
| | - Jeevapani J. Hettige
- Department of Chemistry, University of Iowa, Iowa City, Iowa 52242, United States
| | - Claudio J. Margulis
- Department of Chemistry, University of Iowa, Iowa City, Iowa 52242, United States
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25
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Chatterjee A, Maity B, Ahmed SA, Seth D. Photophysics and Rotational Dynamics of a Hydrophilic Molecule in a Room Temperature Ionic Liquid. Photochem Photobiol 2015; 91:1056-63. [PMID: 26031350 DOI: 10.1111/php.12472] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2015] [Accepted: 05/22/2015] [Indexed: 11/29/2022]
Abstract
We have studied the photophysics and rotational diffusion of hydrophilic solute 7-(N, N'-diethylamino)coumarin-3-carboxylic acid (7-DCCA) in a room temperature ionic liquid methyltrioctylammonium bis(trifluoromethylsulfonyl) imide ([N1888 ][NTf2 ]). Comparison of activation energies of viscous flow and nonradiative decay shows that the photophysical properties of 7-DCCA are not guided by the bulk viscosity of the medium but are dependent on the specific solute solvent interaction and structural heterogeneity of the medium. The rotational relaxation behaviour of 7-DCCA in [N1888 ][NTf2] shows significant deviation from the Stokes Einstein Debye hydrodynamic model of rotational diffusion. This is indicative of the influence of specific solute solvent interaction on the rotational relaxation behaviour of 7-DCCA. Comparison of activation energy of rotational relaxation with activation energy of viscous flow clearly reinforces our assumption that the structural heterogeneity of the medium and specific solute solvent interaction plays a dominant role on the rotational diffusion instead of bulk viscosity.
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Affiliation(s)
- Aninda Chatterjee
- Department of Chemistry, Indian Institute of Technology Patna, Patna, Bihar, India
| | - Banibrata Maity
- Department of Chemistry, Indian Institute of Technology Patna, Patna, Bihar, India
| | - Sayeed Ashique Ahmed
- Department of Chemistry, Indian Institute of Technology Patna, Patna, Bihar, India
| | - Debabrata Seth
- Department of Chemistry, Indian Institute of Technology Patna, Patna, Bihar, India
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26
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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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27
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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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28
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Zhang Y, Maginn EJ. Molecular dynamics study of the effect of alkyl chain length on melting points of [CnMIM][PF6] ionic liquids. Phys Chem Chem Phys 2015; 16:13489-99. [PMID: 24888298 DOI: 10.1039/c4cp01048e] [Citation(s) in RCA: 59] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Based on molecular dynamics simulations, the melting points Tm of a series of 1-alkyl-3-methylimidazolium hexafluorophosphate ionic liquids [CnMIM][PF6] with n = 2, 4, 10, 12, and 14 were studied using the free energy-based pseudosupercritical path (PSCP) method. The experimental trend that the Tm decreases with increasing alkyl chain length for ILs with short alkyl chains and increases for the ones with long alkyl chains was correctly captured. Further analysis revealed that the different trends are the results of the balance between fusion enthalpy and fusion entropy. For the ILs with short alkyl chains (ethyl and butyl groups), fusion entropy plays the dominant role so that [C4MIM][PF6], which has a larger fusion entropy due to its higher liquid phase entropy has the lower melting temperature. As for the ILs with long alkyl chains, due to the enhanced van der Waals interactions brought about by the long non-polar alkyl chains, enthalpy becomes the deciding factor and the melting points increase when the alkyl chain goes from C10 to C14. While the melting points for [C2MIM][PF6] and [C4MIM][PF6] were quantitatively predicted and the trends for the long chain ILs were captured correctly, the absolute melting points for [C10MIM][PF6], [C12MIM][PF6] and [C14MIM][PF6] were systematically overestimated in the simulations. Three possible reasons for the overestimation were studied but all ruled out. Further simulation or experimental studies are needed to explain the difference.
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Affiliation(s)
- Yong Zhang
- Department of Chemical and Biomolecular Engineering, University of Notre Dame, Notre Dame, Indiana 46556, USA.
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29
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Campetella M, Gontrani L, Leonelli F, Bencivenni L, Caminiti R. Two Different Models to Predict Ionic-Liquid Diffraction Patterns: Fixed-Charge versus Polarizable Potentials. Chemphyschem 2014; 16:197-203. [DOI: 10.1002/cphc.201402577] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2014] [Revised: 09/10/2014] [Indexed: 11/09/2022]
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30
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Hettige JJ, Araque JC, Margulis CJ. Bicontinuity and Multiple Length Scale Ordering in Triphilic Hydrogen-Bonding Ionic Liquids. J Phys Chem B 2014; 118:12706-16. [DOI: 10.1021/jp5068457] [Citation(s) in RCA: 62] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- Jeevapani J. Hettige
- Department of Chemistry, University of Iowa, Iowa City, Iowa 52242, United States
| | - Juan Carlos Araque
- Department of Chemistry, University of Iowa, Iowa City, Iowa 52242, United States
| | - Claudio J. Margulis
- Department of Chemistry, University of Iowa, Iowa City, Iowa 52242, United States
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31
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Hettige JJ, Kashyap HK, Margulis CJ. Communication: Anomalous temperature dependence of the intermediate range order in phosphonium ionic liquids. J Chem Phys 2014; 140:111102. [DOI: 10.1063/1.4867900] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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32
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Paredes X, Fernández J, Pádua AAH, Malfreyt P, Malberg F, Kirchner B, Pensado AS. Bulk and Liquid–Vapor Interface of Pyrrolidinium-Based Ionic Liquids: A Molecular Simulation Study. J Phys Chem B 2014; 118:731-42. [DOI: 10.1021/jp406651f] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Xavier Paredes
- Laboratorio de
Propiedades Termofı́sicas, Departamento de
Fı́sica Aplicada, Universidade de Santiago de Compostela, E-15782 Santiago de Compostela, Spain
| | - Josefa Fernández
- Laboratorio de
Propiedades Termofı́sicas, Departamento de
Fı́sica Aplicada, Universidade de Santiago de Compostela, E-15782 Santiago de Compostela, Spain
| | - Agílio A. H. Pádua
- Institut de Chimie
de Clermont-Ferrand, Equipe Thermodynamique et Interactions Moléculaires, Clermont Université, Université Blaise Pascal, BP 80026, 63171 Aubiere, France
- CNRS, UMR6296 ICCF, BP 80026, F-63171 Aubière, France
| | - Patrice Malfreyt
- Institut de Chimie
de Clermont-Ferrand, Equipe Thermodynamique et Interactions Moléculaires, Clermont Université, Université Blaise Pascal, BP 80026, 63171 Aubiere, France
- CNRS, UMR6296 ICCF, BP 80026, F-63171 Aubière, France
| | - Friedrich Malberg
- Mulliken Center
for Theoretical Chemistry, Institut für Physikalische und Theoretische
Chemie, Universität Bonn, Beringstrasse 4+6, D-53115 Bonn, Germany
| | - Barbara Kirchner
- Mulliken Center
for Theoretical Chemistry, Institut für Physikalische und Theoretische
Chemie, Universität Bonn, Beringstrasse 4+6, D-53115 Bonn, Germany
| | - Alfonso S. Pensado
- Laboratorio de
Propiedades Termofı́sicas, Departamento de
Fı́sica Aplicada, Universidade de Santiago de Compostela, E-15782 Santiago de Compostela, Spain
- Mulliken Center
for Theoretical Chemistry, Institut für Physikalische und Theoretische
Chemie, Universität Bonn, Beringstrasse 4+6, D-53115 Bonn, Germany
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33
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Chatterjee A, Maity B, Seth D. Torsional Dynamics of Thioflavin T in Room‐Temperature Ionic Liquids: An Effect of Heterogeneity of the Medium. Chemphyschem 2013; 14:3400-9. [DOI: 10.1002/cphc.201300433] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2013] [Revised: 06/10/2013] [Indexed: 12/20/2022]
Affiliation(s)
- Aninda Chatterjee
- Department of Chemistry, Indian Institute of Technology, Patna 800013, Bihar (India)
| | - Banibrata Maity
- Department of Chemistry, Indian Institute of Technology, Patna 800013, Bihar (India)
| | - Debabrata Seth
- Department of Chemistry, Indian Institute of Technology, Patna 800013, Bihar (India)
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34
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Kashyap HK, Santos CS, Murthy NS, Hettige JJ, Kerr K, Ramati S, Gwon J, Gohdo M, Lall-Ramnarine SI, Wishart JF, Margulis CJ, Castner EW. Structure of 1-Alkyl-1-methylpyrrolidinium Bis(trifluoromethylsulfonyl)amide Ionic Liquids with Linear, Branched, and Cyclic Alkyl Groups. J Phys Chem B 2013; 117:15328-37. [DOI: 10.1021/jp403518j] [Citation(s) in RCA: 108] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Hemant K. Kashyap
- Department of Chemistry, University of Iowa, Iowa City, Iowa 52242, United States
| | - Cherry S. Santos
- Department of Chemistry and
Chemical Biology, Rutgers, The State University of New Jersey, Piscataway, New Jersey 08854, United States
| | - N. Sanjeeva Murthy
- New Jersey Center for Biomaterials, Rutgers, The State University of New Jersey, Piscataway,
New Jersey 08854, United States
| | - Jeevapani J. Hettige
- Department of Chemistry, University of Iowa, Iowa City, Iowa 52242, United States
| | - Kijana Kerr
- Chemistry Department, Brookhaven National Laboratory, Upton, New York 11973-5000,
United States
| | - Sharon Ramati
- Department
of Chemistry, Queensborough Community College-CUNY, Bayside, New
York 11364, United States
| | - JinHee Gwon
- Department
of Chemistry, Queensborough Community College-CUNY, Bayside, New
York 11364, United States
| | - Masao Gohdo
- Chemistry Department, Brookhaven National Laboratory, Upton, New York 11973-5000,
United States
| | - Sharon I. Lall-Ramnarine
- Department
of Chemistry, Queensborough Community College-CUNY, Bayside, New
York 11364, United States
| | - James F. Wishart
- Chemistry Department, Brookhaven National Laboratory, Upton, New York 11973-5000,
United States
| | - Claudio J. Margulis
- Department of Chemistry, University of Iowa, Iowa City, Iowa 52242, United States
| | - Edward W. Castner
- Department of Chemistry and
Chemical Biology, Rutgers, The State University of New Jersey, Piscataway, New Jersey 08854, United States
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35
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Campetella M, Gontrani L, Bodo E, Ceccacci F, Marincola FC, Caminiti R. Conformational isomerisms and nano-aggregation in substituted alkylammonium nitrates ionic liquids: An x-ray and computational study of 2-methoxyethylammonium nitrate. J Chem Phys 2013; 138:184506. [DOI: 10.1063/1.4803799] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023] Open
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