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Ozama K, Amo Y, Kameda Y, Usuki T, Umebayashi Y, Watanabe H. Specific line shape of the lowest frequency Raman scattering modes of triethylene glycol. J Chem Phys 2024; 161:074505. [PMID: 39158045 DOI: 10.1063/5.0223083] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2024] [Accepted: 08/02/2024] [Indexed: 08/20/2024] Open
Abstract
For both dielectric spectroscopy and light scattering spectra, the relaxation modes in the microwave region have been characterized by the Debye relaxation model, which is determined by the peak frequency, or by an empirically extended model (e.g., Cole-Davidson and Kohlrausch-Williams-Watts), which has the appropriate line shape. For light scattering from glass-forming liquids, the general line shape is a broader high frequency side in comparison with Debye relaxation. However, for triethylene glycol (TEG) in liquid form at room temperature, the lowest frequency Raman scattering (LFR) mode shows a peak at about 3.0 GHz, which is narrower than that expected for the Debye relaxation. With increasing temperature, this peak exhibits a significant blueshift and begins to resemble the Debye relaxation shape, indicating that the LFR mode of TEG is also a relaxation mode. The narrowing of the LFR mode of TEG is suggested to be caused from the increased non-whiteness of the fluctuation correlations due to increased hydrogen bonding. This is a consequence of breaking the Debye relaxation model's approximation of the overdamping and narrowing limits in the GHz region, which was found in this study by analyzing the relaxation modes of Raman scattering using the multiple random telegraph model for evaluating thermal bath correlation. The analysis results show that the LFR relaxation times of TEG and the main dielectric relaxation overlap only by 333 K. However, the second LFR mode and β-relaxation at higher frequencies coincide over a wide temperature range, suggesting that they are corresponding modes.
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Affiliation(s)
- Koshi Ozama
- Graduate School of Science and Engineering, Yamagata University, Yamagata 990-8560, Japan
| | - Yuko Amo
- Faculty of Science, Yamagata University, Yamagata 990-8560, Japan
| | - Yasuo Kameda
- Faculty of Science, Yamagata University, Yamagata 990-8560, Japan
| | - Takeshi Usuki
- Faculty of Science, Yamagata University, Yamagata 990-8560, Japan
| | - Yasuhiro Umebayashi
- Graduate School of Science and Technology, Niigata University, 8050 Ikarashi 2-No-Cho, Nishi-Ku, Niigata 950-2181, Japan
| | - Hikari Watanabe
- Department of Pure and Applied Chemistry, Faculty of Science and Technology, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba 278-8510, Japan
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2
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Li J, Farooq MQ, Petrich JW, Anderson JL, Smith EA. Fast and non-destructive determination of water content in ionic liquids at varying temperatures by Raman spectroscopy and multivariate regression analysis. Anal Chim Acta 2021; 1188:339164. [PMID: 34794575 DOI: 10.1016/j.aca.2021.339164] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2021] [Revised: 10/06/2021] [Accepted: 10/08/2021] [Indexed: 11/26/2022]
Abstract
Imidazolium acetate ionic liquids (ILs) have been utilized as promising solvents in many applications that involve varying water content and temperature. These experimental variables affect the anion-cation intermolecular interactions, which in turn influence the performance of the ILs in these applications. This paper shows Raman spectroscopy can be used as an operando method to measure water content in IL solvents when simultaneous temperature changes may occur. The Raman spectra of 1-alkyl-3-methylimidazolium acetate ILs (alkyl chain length n = 2, 4, 6, 8) with varying water content (from 0.028 to 0.899 water mole fraction) and temperature (from 78.1 K to 423.1 K) were measured. Increasing the water content or decreasing the temperature of the tested ILs weakens the anion-cation intermolecular interactions. The water content of these ILs can be quantified even in conditions when the temperature is changing using Raman spectroscopy combined with multivariate regression analysis, including principal component regression (PCR), partial-least-squares regression (PLSR), and artificial neural networks (ANNs). The ANN model combined with partial-least-squares (PLS) achieved the highest prediction accuracy of water content in ILs at varying temperatures (RMSECV = 0.017, R2CV = 99.1%, RMSEP = 0.019, R2P = 98.8%, RPD = 8.93). Raman spectroscopy provides a potential fast non-destructive operando method to monitor the water content of ILs even in applications when the temperature may be simultaneously altered; this information can lead to the optimized use of these ILs in many applications.
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Affiliation(s)
- Jingzhe Li
- The Ames Laboratory, U.S. Department of Energy, Ames, IA, 50011-3111, United States; Department of Chemistry, Iowa State University, Ames, IA, 50011-3111, United States
| | - Muhammad Qamar Farooq
- The Ames Laboratory, U.S. Department of Energy, Ames, IA, 50011-3111, United States; Department of Chemistry, Iowa State University, Ames, IA, 50011-3111, United States
| | - Jacob W Petrich
- The Ames Laboratory, U.S. Department of Energy, Ames, IA, 50011-3111, United States; Department of Chemistry, Iowa State University, Ames, IA, 50011-3111, United States
| | - Jared L Anderson
- The Ames Laboratory, U.S. Department of Energy, Ames, IA, 50011-3111, United States; Department of Chemistry, Iowa State University, Ames, IA, 50011-3111, United States
| | - Emily A Smith
- The Ames Laboratory, U.S. Department of Energy, Ames, IA, 50011-3111, United States; Department of Chemistry, Iowa State University, Ames, IA, 50011-3111, United States.
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3
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Bouarab AF, Martins MA, Stolarska O, Smiglak M, Harvey JP, Coutinho JA, Robelin C. Physical properties and solid-liquid equilibria for hexafluorophosphate-based ionic liquid ternary mixtures and their corresponding subsystems. J Mol Liq 2020. [DOI: 10.1016/j.molliq.2020.113742] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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4
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Lima TA, Paschoal VH, Freitas RS, Faria LFO, Li Z, Tyagi M, Z Y, Ribeiro MCC. An inelastic neutron scattering, Raman, far-infrared, and molecular dynamics study of the intermolecular dynamics of two ionic liquids. Phys Chem Chem Phys 2020; 22:9074-9085. [PMID: 32297886 DOI: 10.1039/d0cp00374c] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The intermolecular dynamics in the THz frequency range of the ionic liquids n-butyl-trimethylammonium bis(trifluoromethanesulfonyl)imide, [N1114][NTf2], and methyl-tributylammonium bis(trifluoromethanesulfonyl)imide, [N1444][NTf2], were investigated by a combined usage of inelastic neutron scattering (INS), Raman, and far-infrared (FIR) spectroscopies and the power spectrum calculated by molecular dynamics (MD) simulations. The collective dynamics of the simulated systems is also discussed by the calculation of time correlation functions of charge and mass currents that are projected onto acoustic- and optic-like motions. The INS and Raman measurements have been performed as a function of temperature in the glassy, crystalline, and liquid phases. The excess in the vibrational density of states over the expectation of the Debye theory, the so-called boson peak, is found in the INS and Raman spectra as a peak at ∼2 meV (∼16 cm-1) and also in the direct measurement of heat capacity at very low temperatures (4-20 K). This low-frequency vibration is incorporated into the curve fits of Raman, FIR, and MD data at room temperature. Fits of spectra from these different sources in the range below 100 cm-1 are consistently achieved with three components at ca. 25, 50, and 80 cm-1, but with distinct relative intensities among the different techniques. It is proposed as the collective nature of the lowest-frequency component and the anion-cation intermolecular vibration nature of the highest-frequency component. The MD results indicate that there is no clear distinction between acoustic and optic vibrations in the spectral range investigated in this work for the ionic liquids [N1114][NTf2] and [N1444][NTf2]. The analysis carried out here agrees in part, but not entirely, with other propositions in the literature, mainly from optical Kerr effect (OKE) and FIR spectroscopies, concerning the intermolecular dynamics of ionic liquids.
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Affiliation(s)
- Thamires A Lima
- Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, USA and Laboratório de Espectroscopia Molecular, Departamento de Química Fundamental, Instituto de Química, Universidade de São Paulo, 05513-970 São Paulo, SP, Brazil.
| | - Vitor H Paschoal
- Laboratório de Espectroscopia Molecular, Departamento de Química Fundamental, Instituto de Química, Universidade de São Paulo, 05513-970 São Paulo, SP, Brazil.
| | - Rafael S Freitas
- Instituto de Física, Universidade de São Paulo, 05314-970 São Paulo, São Paulo, Brazil
| | - Luiz F O Faria
- Laboratório de Espectroscopia Molecular, Departamento de Química Fundamental, Instituto de Química, Universidade de São Paulo, 05513-970 São Paulo, SP, Brazil.
| | - Zhixia Li
- Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, USA and Department of Nuclear, Plasma, and Radiological Engineering, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, USA
| | - Madhusudan Tyagi
- NIST Center for Neutron Research, National Institute of Standards and Technology, Gaithersburg, Maryland 20899-6102, USA and Department of Materials Science and Engineering, University of Maryland, College Park, Maryland 20742, USA
| | - Y Z
- Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, USA and Department of Nuclear, Plasma, and Radiological Engineering, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, USA and Department of Electrical and Computer Engineering, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, USA
| | - Mauro C C Ribeiro
- Laboratório de Espectroscopia Molecular, Departamento de Química Fundamental, Instituto de Química, Universidade de São Paulo, 05513-970 São Paulo, SP, Brazil.
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5
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Lima TA, Ribeiro MCC. Low-frequency Raman spectra of a glass-forming ionic liquid at low temperature and high pressure. J Chem Phys 2019; 150:164502. [PMID: 31042905 DOI: 10.1063/1.5094724] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
The frequency range below ∼100 cm-1 of the Raman spectrum of a glass-forming liquid exhibits two features that characterize the short-time (THz) dynamics: the quasi-elastic scattering (QES) tail and the boson peak (BP). In this work, we follow temperature and pressure effects on the intermolecular dynamics of a typical ionic liquid, 1-butyl-1-methylpiperidinium bis(trifluoromethanesulfonyl)imide, [Pip14][[NTf2]. The glass transition temperature of [Pip14][[NTf2] at atmospheric pressure is Tg = 198 K, and the pressure of glass transition at room temperature is Pg = 1.1 GPa. Raman spectra obtained while cooling the liquid or heating the glass exhibit hysteresis in QES and BP intensities, IQES and IBP. The dependence of IQES, IBP, and the BP frequency, ωBP, with pressure up to the glass transition is steeper than the temperature dependence due to the stronger pressure effect on density within the GPa range. The temperature and pressure behaviors of the parameters IQES, IBP, and ωBP obtained here for [Pip14][[NTf2] are discussed in light of known results for other glass-formers.
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Affiliation(s)
- Thamires A Lima
- Laboratório de Espectroscopia Molecular, Departamento de Química Fundamental, Instituto de Química, Universidade de São Paulo, Av. Prof. Lineu Prestes 748, São Paulo 05508-000, Brazil
| | - Mauro C C Ribeiro
- Laboratório de Espectroscopia Molecular, Departamento de Química Fundamental, Instituto de Química, Universidade de São Paulo, Av. Prof. Lineu Prestes 748, São Paulo 05508-000, Brazil
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6
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Braga NF, Vital DA, Guerrini LM, Lemes AP, Formaggio DMD, Tada DB, Arantes TM, Cristovan FH. PHBV-TiO2
mats prepared by electrospinning technique: Physico-chemical properties and cytocompatibility. Biopolymers 2018; 109:e23120. [DOI: 10.1002/bip.23120] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2017] [Revised: 02/16/2018] [Accepted: 03/29/2018] [Indexed: 11/10/2022]
Affiliation(s)
- Natália F. Braga
- Unifesp-Federal University of São Paulo, Rua Talim. 330; São José dos Campos São Paulo 12231-280 Brazil
| | - Daniel A. Vital
- Unifesp-Federal University of São Paulo, Rua Talim. 330; São José dos Campos São Paulo 12231-280 Brazil
| | - Lilia M. Guerrini
- Unifesp-Federal University of São Paulo, Rua Talim. 330; São José dos Campos São Paulo 12231-280 Brazil
| | - Ana P. Lemes
- Unifesp-Federal University of São Paulo, Rua Talim. 330; São José dos Campos São Paulo 12231-280 Brazil
| | - Daniela M. D. Formaggio
- Unifesp-Federal University of São Paulo, Rua Talim. 330; São José dos Campos São Paulo 12231-280 Brazil
| | - Dayane B. Tada
- Unifesp-Federal University of São Paulo, Rua Talim. 330; São José dos Campos São Paulo 12231-280 Brazil
| | - Tatiane M. Arantes
- Federal University of Jatai-BR 364, km 195, n° 3800; Jatai Goias 75801-615 Brazil
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7
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Abstract
Vibrational spectroscopy has continued use as a powerful tool to characterize ionic liquids since the literature on room temperature molten salts experienced the rapid increase in number of publications in the 1990's. In the past years, infrared (IR) and Raman spectroscopies have provided insights on ionic interactions and the resulting liquid structure in ionic liquids. A large body of information is now available concerning vibrational spectra of ionic liquids made of many different combinations of anions and cations, but reviews on this literature are scarce. This review is an attempt at filling this gap. Some basic care needed while recording IR or Raman spectra of ionic liquids is explained. We have reviewed the conceptual basis of theoretical frameworks which have been used to interpret vibrational spectra of ionic liquids, helping the reader to distinguish the scope of application of different methods of calculation. Vibrational frequencies observed in IR and Raman spectra of ionic liquids based on different anions and cations are discussed and eventual disagreements between different sources are critically reviewed. The aim is that the reader can use this information while assigning vibrational spectra of an ionic liquid containing another particular combination of anions and cations. Different applications of IR and Raman spectroscopies are given for both pure ionic liquids and solutions. Further issues addressed in this review are the intermolecular vibrations that are more directly probed by the low-frequency range of IR and Raman spectra and the applications of vibrational spectroscopy in studying phase transitions of ionic liquids.
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Affiliation(s)
- Vitor H Paschoal
- Laboratório de Espectroscopia Molecular, Departamento de Química Fundamental, Instituto de Química, Universidade de São Paulo , Av. Prof. Lineu Prestes 748, São Paulo 05508-000, Brazil
| | - Luiz F O Faria
- Laboratório de Espectroscopia Molecular, Departamento de Química Fundamental, Instituto de Química, Universidade de São Paulo , Av. Prof. Lineu Prestes 748, São Paulo 05508-000, Brazil
| | - Mauro C C Ribeiro
- Laboratório de Espectroscopia Molecular, Departamento de Química Fundamental, Instituto de Química, Universidade de São Paulo , Av. Prof. Lineu Prestes 748, São Paulo 05508-000, Brazil
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8
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Capitani F, Trequattrini F, Palumbo O, Paolone A, Postorino P. Phase Transitions of PYR14-TFSI as a Function of Pressure and Temperature: the Competition between Smaller Volume and Lower Energy Conformer. J Phys Chem B 2016; 120:2921-8. [DOI: 10.1021/acs.jpcb.5b12667] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- F. Capitani
- Dipartimento
di Fisica, Sapienza Università di Roma, Piazzale A. Moro
5, 00185 Rome, Italy
| | - F. Trequattrini
- Dipartimento
di Fisica, Sapienza Università di Roma, Piazzale A. Moro
5, 00185 Rome, Italy
- CNR-ISC, U.O.S.
La Sapienza, Piazzale A. Moro 5, 00185 Rome, Italy
| | - O. Palumbo
- CNR-ISC, U.O.S.
La Sapienza, Piazzale A. Moro 5, 00185 Rome, Italy
| | - A. Paolone
- CNR-ISC, U.O.S.
La Sapienza, Piazzale A. Moro 5, 00185 Rome, Italy
| | - P. Postorino
- Dipartimento
di Fisica, Sapienza Università di Roma, Piazzale A. Moro
5, 00185 Rome, Italy
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9
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Tao R, Simon SL. Rheology of Imidazolium-Based Ionic Liquids with Aromatic Functionality. J Phys Chem B 2015; 119:11953-9. [DOI: 10.1021/acs.jpcb.5b06163] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Ran Tao
- Department of Chemical Engineering, Texas Tech University, Lubbock, Texas 79409, United States
| | - Sindee L. Simon
- Department of Chemical Engineering, Texas Tech University, Lubbock, Texas 79409, United States
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10
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Yoshimura Y, Shigemi M, Takaku M, Yamamura M, Takekiyo T, Abe H, Hamaya N, Wakabayashi D, Nishida K, Funamori N, Sato T, Kikegawa T. Stability of the Liquid State of Imidazolium-Based Ionic Liquids under High Pressure at Room Temperature. J Phys Chem B 2015; 119:8146-53. [DOI: 10.1021/acs.jpcb.5b03476] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Yukihiro Yoshimura
- Department
of Applied Chemistry, National Defense Academy, 1-10-20, Hashirimizu, Yokosuka, Kanagawa 239-8686, Japan
| | - Machiko Shigemi
- Department
of Applied Chemistry, National Defense Academy, 1-10-20, Hashirimizu, Yokosuka, Kanagawa 239-8686, Japan
| | - Mayumi Takaku
- Graduate
School of Humanities and Sciences, Ochanomizu University, Tokyo 112-8610, Japan
| | - Misaho Yamamura
- Graduate
School of Humanities and Sciences, Ochanomizu University, Tokyo 112-8610, Japan
| | - Takahiro Takekiyo
- Department
of Applied Chemistry, National Defense Academy, 1-10-20, Hashirimizu, Yokosuka, Kanagawa 239-8686, Japan
| | - Hiroshi Abe
- Department
of Materials Science and Engineering, National Defense Academy, 1-10-20,
Hashirimizu, Yokosuka, Kanagawa 239-8686, Japan
| | - Nozomu Hamaya
- Graduate
School of Humanities and Sciences, Ochanomizu University, Tokyo 112-8610, Japan
| | - Daisuke Wakabayashi
- Department
of Earth and Planetary Science, University of Tokyo, Tokyo 113-0033, Japan
| | - Keisuke Nishida
- Department
of Earth and Planetary Science, University of Tokyo, Tokyo 113-0033, Japan
| | - Nobumasa Funamori
- Department
of Earth and Planetary Science, University of Tokyo, Tokyo 113-0033, Japan
| | - Tomoko Sato
- Department
of Earth and Planetary Systems Science, Hiroshima University, Higashi-Hiroshima 739-8526, Japan
| | - Takumi Kikegawa
- Institute
of Materials Structure Science, High Energy Accelerator Research Organization, Tsukuba 305-0801, Japan
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11
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Khatun S, Castner EW. Ionic Liquid–Solute Interactions Studied by 2D NOE NMR Spectroscopy. J Phys Chem B 2014; 119:9225-35. [DOI: 10.1021/jp509861g] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- Sufia Khatun
- Department of Chemistry and
Chemical Biology, Rutgers, The State University of New Jersey, Piscataway, New Jersey 08854, 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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Siqueira LJA, Constantino VRL, Camilo FF, Torresi RM, Temperini MLA, Ribeiro MCC, Izumi CMS. Probing the local environment of hybrid materials designed from ionic liquids and synthetic clay by Raman spectroscopy. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2014; 122:469-475. [PMID: 24326263 DOI: 10.1016/j.saa.2013.11.084] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/22/2013] [Revised: 11/12/2013] [Accepted: 11/13/2013] [Indexed: 06/03/2023]
Abstract
Hybrid organic-inorganic material containing Laponite clay and ionic liquids forming cations have been prepared and characterized by FT-Raman spectroscopy, X-ray diffraction, and thermal analysis. The effect of varying the length of the alkyl side chain and conformations of cations has been investigated by using different ionic liquids based on piperidinium and imidazolium cations. The structure of the N,N-butyl-methyl-piperidinium cation and the assignment of its vibrational spectrum have been further elucidated by quantum chemistry calculations. The X-ray data indicate that the organic cations are intercalated parallel to the layers of the clay. Comparison of Raman spectra of pure ionic liquids with different anions and the resulting solid hybrid materials in which the organic cations have been intercalated into the clay characterizes the local environment experienced by the cations in the hybrid materials. The Raman spectra of hybrid materials suggest that the local environment of all confined cations, in spite of this diversity in properties, resembles the liquid state of ionic liquids with a relatively disordered structure.
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Affiliation(s)
- Leonardo J A Siqueira
- Laboratório de Materiais Híbridos, Instituto de Ciências Químicas, Farmacêuticas e Ambientais, Universidade Federal de São Paulo, Rua São Nicolau, 210 CEP 09913-030 Diadema, SP, Brazil
| | - Vera R L Constantino
- Instituto de Química, Universidade de São Paulo, C.P. 26077, CEP 05513-970 São Paulo, SP, Brazil
| | - Fernanda F Camilo
- Laboratório de Materiais Híbridos, Instituto de Ciências Químicas, Farmacêuticas e Ambientais, Universidade Federal de São Paulo, Rua São Nicolau, 210 CEP 09913-030 Diadema, SP, Brazil
| | - Roberto M Torresi
- Instituto de Química, Universidade de São Paulo, C.P. 26077, CEP 05513-970 São Paulo, SP, Brazil
| | - Marcia L A Temperini
- Instituto de Química, Universidade de São Paulo, C.P. 26077, CEP 05513-970 São Paulo, SP, Brazil
| | - Mauro C C Ribeiro
- Instituto de Química, Universidade de São Paulo, C.P. 26077, CEP 05513-970 São Paulo, SP, Brazil
| | - Celly M S Izumi
- Instituto de Química, Universidade de São Paulo, C.P. 26077, CEP 05513-970 São Paulo, SP, Brazil.
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13
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Lu R, Wang W, Sun Q, Yu A. Spectroscopic investigation on intermolecular and intramolecular motions of concentrated aqueous KSCN solution. Chem Phys 2012. [DOI: 10.1016/j.chemphys.2012.08.025] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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14
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Forero-Martinez NC, Cortes-Huerto R, Ballone P. The glass transition and the distribution of voids in room-temperature ionic liquids: A molecular dynamics study. J Chem Phys 2012; 136:204510. [DOI: 10.1063/1.4723855] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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15
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Jarosz G, Mierzwa M, Zioło J, Paluch M, Shirota H, Ngai KL. Glass Transition Dynamics of Room-Temperature Ionic Liquid 1-Methyl-3-trimethylsilylmethylimidazolium Tetrafluoroborate. J Phys Chem B 2011; 115:12709-16. [DOI: 10.1021/jp207291k] [Citation(s) in RCA: 73] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Georgina Jarosz
- Institute of Physics, University of Silesia, Uniwersytecka 4, 40-007 Katowice, Poland
| | - Michal Mierzwa
- Institute of Physics, University of Silesia, Uniwersytecka 4, 40-007 Katowice, Poland
| | - Jerzy Zioło
- Institute of Physics, University of Silesia, Uniwersytecka 4, 40-007 Katowice, Poland
| | - Marian Paluch
- Institute of Physics, University of Silesia, Uniwersytecka 4, 40-007 Katowice, Poland
| | - Hideaki Shirota
- Department of Nanomaterial Science & Department of Chemistry, Chiba University, 1-33 Yayoi, Inage-ku, Chiba 263-8522, Japan
| | - K. L. Ngai
- CNR-IPCF, Dipartimento di Fisica, Largo Bruno Pontecorvo 3, I-56127, Pisa, Italy
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16
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Lu R, Wang W, Yu A. Cation and anion substitution effects on the ultrafast dynamics of interionic interaction in imidazolium based ionic liquids. Sci China Chem 2011. [DOI: 10.1007/s11426-011-4334-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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17
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Ribeiro MCC. Intermolecular vibrations and fast relaxations in supercooled ionic liquids. J Chem Phys 2011; 134:244507. [DOI: 10.1063/1.3604533] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
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18
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Fanetti S, Citroni M, Bini R. Structure and reactivity of pyridine crystal under pressure. J Chem Phys 2011; 134:204504. [DOI: 10.1063/1.3591973] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
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19
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Ribeiro MCC. Low-frequency Raman spectra and fragility of imidazolium ionic liquids. J Chem Phys 2010; 133:024503. [DOI: 10.1063/1.3462962] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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20
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Sarangi S, Zhao W, Müller-Plathe F, Balasubramanian S. Correlation between Dynamic Heterogeneity and Local Structure in a Room-Temperature Ionic Liquid: A Molecular Dynamics Study of [bmim][PF6]. Chemphyschem 2010; 11:2001-10. [DOI: 10.1002/cphc.201000111] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Yan T, Wang Y, Knox C. On the Dynamics of Ionic Liquids: Comparisons between Electronically Polarizable and Nonpolarizable Models II. J Phys Chem B 2010; 114:6886-904. [DOI: 10.1021/jp908914d] [Citation(s) in RCA: 56] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- Tianying Yan
- Institute of New Energy Material Chemistry and Department of Material Chemistry, Nankai University, Tianjin 300071, China, Key Laboratory of Frontiers in Theoretical Physics, Institute of Theoretical Physics, Chinese Academy of Sciences, 55 East Zhongguancun Road, Beijing, 100190, China, and Center for Biophysical Modeling and Simulation and Department of Chemistry, University of Utah, Salt Lake City, Utah 84112-0850
| | - Yanting Wang
- Institute of New Energy Material Chemistry and Department of Material Chemistry, Nankai University, Tianjin 300071, China, Key Laboratory of Frontiers in Theoretical Physics, Institute of Theoretical Physics, Chinese Academy of Sciences, 55 East Zhongguancun Road, Beijing, 100190, China, and Center for Biophysical Modeling and Simulation and Department of Chemistry, University of Utah, Salt Lake City, Utah 84112-0850
| | - Craig Knox
- Institute of New Energy Material Chemistry and Department of Material Chemistry, Nankai University, Tianjin 300071, China, Key Laboratory of Frontiers in Theoretical Physics, Institute of Theoretical Physics, Chinese Academy of Sciences, 55 East Zhongguancun Road, Beijing, 100190, China, and Center for Biophysical Modeling and Simulation and Department of Chemistry, University of Utah, Salt Lake City, Utah 84112-0850
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Shimizu K, Tariq M, Gomes MFC, Rebelo LPN, Lopes JNC. Assessing the Dispersive and Electrostatic Components of the Cohesive Energy of Ionic Liquids Using Molecular Dynamics Simulations and Molar Refraction Data. J Phys Chem B 2010; 114:5831-4. [DOI: 10.1021/jp101910c] [Citation(s) in RCA: 84] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Karina Shimizu
- Centro de Química Estrutural, Instituto Superior Técnico, 1049 001 Lisboa, Portugal, Instituto de Tecnologia Química e Biológica, UNL, 2780 901 Oeiras, Portugal, CNRS, UMR 6272, LTIM, and Clermont Université, Université Blaise Pascal, Clermont-Ferrand, France
| | - Mohammad Tariq
- Centro de Química Estrutural, Instituto Superior Técnico, 1049 001 Lisboa, Portugal, Instituto de Tecnologia Química e Biológica, UNL, 2780 901 Oeiras, Portugal, CNRS, UMR 6272, LTIM, and Clermont Université, Université Blaise Pascal, Clermont-Ferrand, France
| | - Margarida F. Costa Gomes
- Centro de Química Estrutural, Instituto Superior Técnico, 1049 001 Lisboa, Portugal, Instituto de Tecnologia Química e Biológica, UNL, 2780 901 Oeiras, Portugal, CNRS, UMR 6272, LTIM, and Clermont Université, Université Blaise Pascal, Clermont-Ferrand, France
| | - Luís P. N. Rebelo
- Centro de Química Estrutural, Instituto Superior Técnico, 1049 001 Lisboa, Portugal, Instituto de Tecnologia Química e Biológica, UNL, 2780 901 Oeiras, Portugal, CNRS, UMR 6272, LTIM, and Clermont Université, Université Blaise Pascal, Clermont-Ferrand, France
| | - José N. Canongia Lopes
- Centro de Química Estrutural, Instituto Superior Técnico, 1049 001 Lisboa, Portugal, Instituto de Tecnologia Química e Biológica, UNL, 2780 901 Oeiras, Portugal, CNRS, UMR 6272, LTIM, and Clermont Université, Université Blaise Pascal, Clermont-Ferrand, France
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Kanzaki R, Mitsugi T, Fukuda S, Fujii K, Takeuchi M, Soejima Y, Takamuku T, Yamaguchi T, Umebayashi Y, Ishiguro SI. Ion–ion interaction in room temperature ionic liquid 1-ethyl-3-methylimidazolium tetrafluoroborate studied by large angle X-ray scattering experiment and molecular dynamics simulations. J Mol Liq 2009. [DOI: 10.1016/j.molliq.2008.10.003] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Siqueira LJA, Ando RA, Bazito FFC, Torresi RM, Santos PS, Ribeiro MCC. Shielding of Ionic Interactions by Sulfur Dioxide in an Ionic Liquid. J Phys Chem B 2008; 112:6430-5. [DOI: 10.1021/jp800665y] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Leonardo J. A. Siqueira
- Instituto de Química, Universidade de São Paulo, C.P. 26077, CEP 05513−970, São Paulo, SP, Brazil, and Departamento de Ciências Exatas e da Terra, Universidade Federal de São Paulo, Campus de Diadema, Diadema, SP, Brazil
| | - Rômulo A. Ando
- Instituto de Química, Universidade de São Paulo, C.P. 26077, CEP 05513−970, São Paulo, SP, Brazil, and Departamento de Ciências Exatas e da Terra, Universidade Federal de São Paulo, Campus de Diadema, Diadema, SP, Brazil
| | - Fernanda F. C. Bazito
- Instituto de Química, Universidade de São Paulo, C.P. 26077, CEP 05513−970, São Paulo, SP, Brazil, and Departamento de Ciências Exatas e da Terra, Universidade Federal de São Paulo, Campus de Diadema, Diadema, SP, Brazil
| | - Roberto M. Torresi
- Instituto de Química, Universidade de São Paulo, C.P. 26077, CEP 05513−970, São Paulo, SP, Brazil, and Departamento de Ciências Exatas e da Terra, Universidade Federal de São Paulo, Campus de Diadema, Diadema, SP, Brazil
| | - Paulo S. Santos
- Instituto de Química, Universidade de São Paulo, C.P. 26077, CEP 05513−970, São Paulo, SP, Brazil, and Departamento de Ciências Exatas e da Terra, Universidade Federal de São Paulo, Campus de Diadema, Diadema, SP, Brazil
| | - Mauro C. C. Ribeiro
- Instituto de Química, Universidade de São Paulo, C.P. 26077, CEP 05513−970, São Paulo, SP, Brazil, and Departamento de Ciências Exatas e da Terra, Universidade Federal de São Paulo, Campus de Diadema, Diadema, SP, Brazil
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Siqueira LJA, Ribeiro MCC. Molecular Dynamics Simulation of the Ionic Liquid N-Ethyl-N,N-dimethyl-N-(2-methoxyethyl)ammonium Bis(trifluoromethanesulfonyl)imide. J Phys Chem B 2007; 111:11776-85. [PMID: 17877389 DOI: 10.1021/jp074840c] [Citation(s) in RCA: 68] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Thermodynamics, structure, and dynamics of an ionic liquid based on a quaternary ammonium salt with ether side chain, namely, N-ethyl-N,N-dimethyl-N-(2-methoxyethyl)ammonium bis(trifluoromethanesulfonyl)imide, MOENM2E TFSI, are investigated by molecular dynamics (MD) simulations. Average density and configurational energy of simulated MOENM2E TFSI are interpreted with models that take into account empirical ionic volumes. A throughout comparison of the equilibrium structure of MOENM2E TFSI with previous results for the more common ionic liquids based on imidazolium cations is provided. Several time correlation functions are used to reveal the microscopic dynamics of MOENM2E TFSI. Structural relaxation is discussed by the calculation of simultaneous space-time correlation functions. Temperature effects on transport coefficients (diffusion, conductivity, and viscosity) are investigated. The ratio between the actual conductivity and the estimate from ionic diffusion by the Nernst-Einstein equation indicates that correlated motion of neighboring ions in MOENM2E TFSI is similar to imidazolium ionic liquids. In line with experiment, Walden plot of conductivity and viscosity indicates that simulated MOENM2E TFSI should be classified as a poor ionic liquid.
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Affiliation(s)
- Leonardo J A Siqueira
- Laboratório de Espectroscopia Molecular, Instituto de Química, Universidade de São Paulo, CP 26077, CEP 05513-970, São Paulo, SP, Brazil
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