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Stachowiak W, Szumski R, Homa J, Woźniak-Karczewska M, Parus A, Strzemiecka B, Chrzanowski Ł, Niemczak M. Transformation of Iodosulfuron-Methyl into Ionic Liquids Enables Elimination of Additional Surfactants in Commercial Formulations of Sulfonylureas. Molecules 2021; 26:4396. [PMID: 34361550 PMCID: PMC8348827 DOI: 10.3390/molecules26154396] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2021] [Revised: 07/17/2021] [Accepted: 07/19/2021] [Indexed: 11/16/2022] Open
Abstract
Efficient use of herbicides for plant protection requires the application of auxiliary substances such as surfactants, stabilizers, wetting or anti-foaming agents, and absorption enhancers, which can be more problematic for environment than the herbicides themselves. We hypothesized that the combination of sulfonylurea (iodosulfuron-methyl) anion with inexpensive, commercially available quaternary tetraalkylammonium cations could lead to biologically active ionic liquids (ILs) that could become a convenient and environment-friendly alternative to adjuvants. A simple one-step synthesis allowed for synthesizing iodosulfuron-methyl based ILs with high yields ranging from 88 to 96% as confirmed by UV, FTIR, and NMR. The obtained ILs were found to possess several favorable properties compared to the currently used sodium salt iodosulfuron-methyl, such as adjustable hydrophobicity (octanol-water partition coefficient) and enhanced stability in aqueous solutions, which was supported by molecular calculations showing cation-anion interaction energies. In addition, soil mobility and volatility of ILs were more beneficial compared to the parental herbicide. Herbicidal activity tests toward oil-seed rape and cornflower revealed that ILs comprising at least one alkyl chain in the decyl to octadecyl range had similar or better efficacy compared to the commercial preparation without addition of any adjuvant. Furthermore, results of antimicrobial activity indicated that they were practically harmless or slightly toxic toward model soil microorganisms such as Pseudomonas putida and Bacillus cereus.
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Affiliation(s)
| | | | | | | | | | | | - Łukasz Chrzanowski
- Department of Chemical Technology, Poznan University of Technology, 60-965 Poznan, Poland; (W.S.); (R.S.); (J.H.); (M.W.-K.); (A.P.); (B.S.); (M.N.)
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2
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Golub B, Fumino K, Stange P, Fossog V, Hempelmann R, Ondo D, Paschek D, Ludwig R. Balance Between Contact and Solvent-Separated Ion Pairs in Mixtures of the Protic Ionic Liquid [Et 3NH][MeSO 3] with Water Controlled by Water Content and Temperature. J Phys Chem B 2021; 125:4476-4488. [PMID: 33899479 DOI: 10.1021/acs.jpcb.1c01850] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The formation of aggregates of ionic species is a crucial process in liquids and solutions. Ion speciation is particularly interesting for the case of ionic liquids (ILs) since these Coulombic fluids consist solely of ions. Most of their unique properties, such as enthalpies of vaporization and conductivities, are strongly related to ion pair formation. Here, we show that the balance of hydrogen-bonded contact ion pairs (CIP) and solvent-separated (SIP) ion pairs in protic ionic liquids (PILs) and in their mixtures with water can be well understood by a combination of far-infrared (FIR) and mid-infrared (MIR) spectroscopy, density functional theory (DFT) calculations of PIL/water aggregates, and molecular dynamics (MD) simulations of PIL/water mixtures. This combined approach is applied to mixtures of triethylammonium methanesulfonate [Et3NH][MeSO3] with water. It is shown that ion speciation in this mixture depends on three parameters: the relative hydrogen bond acceptor strength of the counter ion and the molecular solvent, the solvent concentration, and the temperature. For selected PIL/water mixtures, the equilibrium constants for CIPs and SIPs were determined as a function of the solvent content and temperature. Finally, for the studied PIL/water mixtures, the transition from CIPs to SIPs could be understood on enthalpic and entropic grounds. A detailed picture of this interconversion process could be described at the molecular level by means of MD simulations. In addition, the concentration dependence of ion pair formation can be well understood with help of a simplified "cartoon-like" statistical model describing hydrogen bond redistribution.
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Affiliation(s)
- Benjamin Golub
- Institut für Chemie, Abteilung Physikalische und Theoretische Chemie, Universität Rostock, Albert-Einstein-Straße 21, D-18059 Rostock, Germany
| | - Koichi Fumino
- Institut für Chemie, Abteilung Physikalische und Theoretische Chemie, Universität Rostock, Dr.-Lorenz-Weg 2, D-18059 Rostock, Germany
| | - Peter Stange
- Institut für Chemie, Abteilung Physikalische und Theoretische Chemie, Universität Rostock, Dr.-Lorenz-Weg 2, D-18059 Rostock, Germany
| | - Verlaine Fossog
- Transfercenter Sustainable Electrochemistry, Saarland University and KIST Europe, D-66123 Saarbrücken, Germany
| | - Rolf Hempelmann
- Transfercenter Sustainable Electrochemistry, Saarland University and KIST Europe, D-66123 Saarbrücken, Germany
| | - Daniel Ondo
- Department of Physical Chemistry, University of Chemistry and Technology, Technicka 5, CZ-166 28 Prague 6, Czech Republic
| | - Dietmar Paschek
- Institut für Chemie, Abteilung Physikalische und Theoretische Chemie, Universität Rostock, Albert-Einstein-Straße 21, D-18059 Rostock, Germany
| | - Ralf Ludwig
- Institut für Chemie, Abteilung Physikalische und Theoretische Chemie, Universität Rostock, Dr.-Lorenz-Weg 2, D-18059 Rostock, Germany.,Leibniz Institut für Katalyse an der Universität Rostock, Albert-Einstein-Straße 29a, D-18059 Rostock, Germany
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Kurnia KA, Fernandes AM, Pinho SP, Coutinho JAP. Ion speciation: a key for the understanding of the solution properties of ionic liquid mixtures. Phys Chem Chem Phys 2019; 21:21626-21632. [PMID: 31549125 DOI: 10.1039/c9cp04533c] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Recently, combinations of two (or more) ionic liquids, known as ionic liquid mixtures, have become popular and have a broad range of applications. However, the fundamental knowledge on the molecular interactions that exist in ionic liquid mixtures is far from being understood. In this work, the experimental measurement of the water activity coefficient and computational modelling using Conductor-like Screening Model for Real Solvent (COSMO-RS) were carried out to get an insight into the molecular interactions that are present in ionic liquid mixtures in aqueous solution. The results show that the combination of two ionic liquids of different basicity in aqueous solution allows fine tuning of the water activities, covering a wide range of values that could replace several pure fluids. This is an important feature resulting from the unexpected ion speciation of the ionic liquid mixtures in aqueous solution.
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Affiliation(s)
- Kiki Adi Kurnia
- Department of Marine, Faculty of Fisheries and Marine, Universitas Airlangga, Jalan Mulyorejo Kampus C, Surabaya, 60115, Indonesia.
| | - Ana M Fernandes
- QOPNA, Department of Chemistry, Universidade de Aveiro, Aveiro 3810-193, Portugal
| | - Simão P Pinho
- Associate Laboratory LSRE/LCM, Instituto Politécnico de Bragança, Bragança 5301-857, Portugal and Centro de Investigação de Montaha (CIMO), Instituto Politécnico de Bragança, Bragança 5301-857, Portugal
| | - João A P Coutinho
- CICECO - Aveiro Institute of Materials, Department of Chemistry, Universidade de Aveiro, Aveiro 3810-193, Portugal.
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Gupta A, Kaur S, Kashyap HK. How Water Permutes the Structural Organization and Microscopic Dynamics of Cholinium Glycinate Biocompatible Ionic Liquid. J Phys Chem B 2019; 123:2057-2069. [DOI: 10.1021/acs.jpcb.8b10235] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Aditya Gupta
- Department of Chemistry, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110016, India
| | - Supreet Kaur
- Department of Chemistry, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110016, India
| | - Hemant K. Kashyap
- Department of Chemistry, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110016, India
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Cha S, Lee M, Kim D. Concentration Dependence of Ion Pairing in Imidazolium-Based Ionic Liquid Solutions. Chemphyschem 2019; 20:482-488. [PMID: 30565367 DOI: 10.1002/cphc.201800926] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2018] [Revised: 08/15/2018] [Indexed: 11/10/2022]
Abstract
Infrared vibrational spectroscopy was used to probe concentration-dependent ion pair dissociation of imidazolium-based ionic liquids with three different halide anions (I- , Br- , and Cl- ) in deuterated chloroform. Dissociation of the ion pairs at low concentrations of ionic liquids was found to be the easiest for ionic liquid with Cl- anion, the most electronegative anion among the three investigated. This anomalous trend of ion pair dissociation was explained in terms of varying interaction strength between the solvent (CDCl3 ) and the anions investigated.
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Affiliation(s)
- Seoncheol Cha
- Department of Physics, Sogang University, Seoul, Korea
| | - Minho Lee
- Department of Physics, Sogang University, Seoul, Korea
| | - Doseok Kim
- Department of Physics, Sogang University, Seoul, Korea
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6
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Li S, Saielli G, Wang Y. Aggregation behavior of dihexadecylviologen bistriflimide ionic liquid crystal in different solvents: influence of polarity and concentration. Phys Chem Chem Phys 2018; 20:22730-22738. [PMID: 30137072 DOI: 10.1039/c8cp03055c] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Solutions of 1,1'-dihexadecyl-4,4'-bipyridinium di[bis(trifluoromethanesulfonyl)imide] salt, also known as dihexadecylviologen bistriflimide, in deuterated acetonitrile (ACN), dichloromethane (DCM) and chloroform (CDCl3), respectively, were investigated by the combination of 1H and DOSY NMR spectroscopy, DFT calculations and MD simulation to understand the influence of solvent polarity and solute concentration (10-5-10-1 M) on its aggregation behavior. We found that the polar solvent acetonitrile (ACN) does not favor ion aggregation and cluster formation. In the whole range of concentrations investigated, the system appears to be dominated by neutral ion pairs composed of one cation and two anions, possibly in fast equilibrium (on the NMR time scale) with small or slightly larger aggregates. The diffusion coefficient of the cationic species is only weakly affected by concentration. In contrast, the low-polar solvents of chloroform (CDCl3) and dichloromethane (DCM) strongly favor cluster formation above a certain concentration and the viologen diffusion coefficient in CDCl3 is much smaller and more strongly dependent on concentration than that in ACN. The information obtained from the MD simulations suggests that the aggregates have a structure similar to the isotropic liquid phase of the viologen-based ionic liquids and ionic liquid crystals. The lifetimes of such large clusters appear to be relatively long, beyond the time scale of tens of nanoseconds. Moreover, the results from the aromatic proton NMR resonances provide some insights on the dielectric constants inside the viologen aggregates.
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Affiliation(s)
- Shen Li
- CAS Key Laboratory of Theoretical Physics, Institute of Theoretical Physics, Chinese Academy of Sciences, 55 East Zhongguancun Road, P. O. Box 2735, Beijing, 100190, China.
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7
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Stuckenholz M, Crespo EA, Vega LF, Carvalho PJ, Coutinho JAP, Schröer W, Kiefer J, Rathke B. Vapor Liquid Equilibria of Binary Mixtures of 1-Butyl-3-methylimidazolium Triflate (C 4mimTfO) and Molecular Solvents: n-Alkyl Alcohols and Water. J Phys Chem B 2018; 122:6017-6032. [PMID: 29733611 DOI: 10.1021/acs.jpcb.8b03278] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Isobaric vapor liquid equilibria (VLE) of binary mixtures of the ionic liquid (IL) 1-butyl-3-methylimidazolium trifluoromethanesulfonate (C4mimTfO) with either water or short chained n-alkyl alcohols (methanol, ethanol, propan-1-ol, and butan-1-ol) are described in this study. Two different microebulliometers and a classical VLE apparatus were compared and the VLEs were determined in the composition range 0.4 ≤ x(solvent) ≤ 1 at three different pressure levels ( p = 500 mbar, 700 mbar, and 1000 mbar). The experimental data were modeled using the soft-SAFT equation of state, which was able to accurately describe the nonideal behavior of these mixtures. The combined experimental-modeling results obtained contribute to establish the structure-property relationship between the C4mimTfO and n-alkyl alcohol molecules and to infer about its influence on the phase behavior of these solvents.
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Affiliation(s)
- Marcus Stuckenholz
- Universität Bremen , FB4, Technische Thermodynamik , Badgasteiner Strasse 1 , 28359 Bremen , Germany
| | - Emanuel A Crespo
- CICECO - Aveiro Institute of Materials, Department of Chemistry , University of Aveiro , 3810-193 Aveiro , Portugal
| | - Lourdes F Vega
- Gas Research Center and Chemical Engineering Department , Khalifa University of Science and Technology, The Petroleum Institute , P.O. Box 2533, Abu Dhabi , United Arab Emirates
| | - Pedro J Carvalho
- CICECO - Aveiro Institute of Materials, Department of Chemistry , University of Aveiro , 3810-193 Aveiro , Portugal
| | - João A P Coutinho
- CICECO - Aveiro Institute of Materials, Department of Chemistry , University of Aveiro , 3810-193 Aveiro , Portugal
| | - Wolffram Schröer
- Universität Bremen , FB2, Institut für Anorganische und Physikalische Chemie , Leobener Strasse NWII , 28359 Bremen , Germany
| | - Johannes Kiefer
- Universität Bremen , FB4, Technische Thermodynamik , Badgasteiner Strasse 1 , 28359 Bremen , Germany
| | - Bernd Rathke
- Universität Bremen , FB4, Technische Thermodynamik , Badgasteiner Strasse 1 , 28359 Bremen , Germany
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8
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Ionic and conformational mobility in poly(vinylidene fluoride)/ionic liquid blends: Dielectric and electrical conductivity behavior. POLYMER 2018. [DOI: 10.1016/j.polymer.2018.04.019] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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9
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Bandlamudi SRP, Cooney MJ, Martin GL, Benjamin KM. Molecular Simulation and Experimental Characterization of Ionic-Liquid-Based Cosolvent Extraction Solvents. Ind Eng Chem Res 2017. [DOI: 10.1021/acs.iecr.6b03931] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Santosh Rathan Paul Bandlamudi
- Department of Chemical
and Biological Engineering, South Dakota School of Mines and Technology, Rapid City, South Dakota 57701, United States
| | - Michael J. Cooney
- University of Hawaii at Manoa, Hawaii Natural Energy Institute, Honolulu, Hawaii 96822, United States
| | - Georgianna L. Martin
- University of Hawaii at Manoa, Hawaii Natural Energy Institute, Honolulu, Hawaii 96822, United States
| | - Kenneth M. Benjamin
- Department of Chemical
and Biological Engineering, South Dakota School of Mines and Technology, Rapid City, South Dakota 57701, United States
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10
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Yang M, Ma L, Zhao K. Temperature dependent dielectric relaxation of ionic liquid ([bmim][BF4])/alcohol binary mixtures. NEW J CHEM 2017. [DOI: 10.1039/c7nj01443k] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A dielectric spectroscopy study on the binary mixtures of the ionic liquid (IL) 1-butyl-3-methylimidazolium tetrafluoroborate ([bmim][BF4]) and four kinds of alcohols as a function of temperature was carried out over a frequency range of 100 MHz to 20 GHz.
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Affiliation(s)
- Man Yang
- College of Chemistry
- Beijing Normal University
- Beijing 100875
- China
| | - Liyan Ma
- College of Chemistry
- Beijing Normal University
- Beijing 100875
- China
| | - Kongshuang Zhao
- College of Chemistry
- Beijing Normal University
- Beijing 100875
- China
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11
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Ma L, Yang M, Zhao K. Interaction and microstructure in the binary mixture systems of ionic liquid and acetone by dielectric spectroscopy. J Mol Liq 2016. [DOI: 10.1016/j.molliq.2016.04.026] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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12
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Cade EA, Petenuci J, Hoffmann MM. Aggregation Behavior of Several Ionic Liquids in Molecular Solvents of Low Polarity-Indication of a Bimodal Distribution. Chemphyschem 2016; 17:520-9. [DOI: 10.1002/cphc.201500990] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2015] [Revised: 12/08/2015] [Indexed: 11/09/2022]
Affiliation(s)
- Elise A. Cade
- Department of Chemistry and Biochemistry; The College at Brockport; State University of New York; Brockport NY 14420 USA
| | - João Petenuci
- Department of Chemistry and Biochemistry; The College at Brockport; State University of New York; Brockport NY 14420 USA
| | - Markus M. Hoffmann
- Department of Chemistry and Biochemistry; The College at Brockport; State University of New York; Brockport NY 14420 USA
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14
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Gupta A, Sharma S, Kashyap HK. Composition dependent structural organization in trihexyl(tetradecyl)phosphonium chloride ionic liquid-methanol mixtures. J Chem Phys 2015; 142:134503. [DOI: 10.1063/1.4916308] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- Aditya Gupta
- Department of Chemistry, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110016, India
| | - Shobha Sharma
- Department of Chemistry, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110016, India
| | - Hemant K. Kashyap
- Department of Chemistry, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110016, India
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15
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Hoffmann MM, Sylvester ED, Russo JW. On the temperature dependence of several physicochemical properties for aqueous solutions of the ionic liquid 1-butyl-3-methylimidazolium methanesulfonate ([C4mim][MeSO3]). J Mol Liq 2014. [DOI: 10.1016/j.molliq.2014.08.031] [Citation(s) in RCA: 5] [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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16
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Barra KM, Sabatini RP, McAtee ZP, Heitz MP. Solvation and Rotation Dynamics in the Trihexyl(tetradecyl)phosphonium Chloride Ionic Liquid/Methanol Cosolvent System. J Phys Chem B 2014; 118:12979-92. [DOI: 10.1021/jp5092784] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Kathleen M. Barra
- Department
of Chemistry, The College at Brockport, State University of New York, Brockport, New York 14420, United States
| | - Randy P. Sabatini
- Department
of Chemistry, The College at Brockport, State University of New York, Brockport, New York 14420, United States
| | - Zachery P. McAtee
- Department
of Chemistry, The College at Brockport, State University of New York, Brockport, New York 14420, United States
| | - Mark P. Heitz
- Department
of Chemistry, The College at Brockport, State University of New York, Brockport, New York 14420, United States
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17
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Ion Pairing in Protic Ionic Liquids Probed by Far-Infrared Spectroscopy: Effects of Solvent Polarity and Temperature. Chemphyschem 2014; 15:2604-9. [DOI: 10.1002/cphc.201402205] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2014] [Indexed: 11/07/2022]
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18
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Elshwishin A, Köser J, Schröer W, Qiao B. Liquid–liquid phase separation of ionic liquids in solutions: Ionic liquids with the triflat anion solved in aryl halides. J Mol Liq 2014. [DOI: 10.1016/j.molliq.2013.07.012] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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19
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20
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Strauch M, Roth C, Kubatzki F, Ludwig R. Formation of “Quasi” Contact or Solvent-separated Ion Pairs in the Local Environment of Probe Molecules Dissolved in Ionic Liquids. Chemphyschem 2014; 15:265-70. [DOI: 10.1002/cphc.201300797] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2013] [Revised: 12/05/2013] [Indexed: 11/09/2022]
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Fumino K, Reimann S, Ludwig R. Probing molecular interaction in ionic liquids by low frequency spectroscopy: Coulomb energy, hydrogen bonding and dispersion forces. Phys Chem Chem Phys 2014; 16:21903-29. [DOI: 10.1039/c4cp01476f] [Citation(s) in RCA: 179] [Impact Index Per Article: 17.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Low vibrational spectroscopy provides detailed information on the strength and type of interaction and their influence on the properties of ionic liquids.
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Affiliation(s)
- Koichi Fumino
- Universität Rostock
- Institut für Chemie
- 18059 Rostock, Germany
| | | | - Ralf Ludwig
- Universität Rostock
- Institut für Chemie
- 18059 Rostock, Germany
- Leibniz-Institut für Katalyse an der Universität Rostock e.V
- 18059 Rostock, Germany
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22
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Calorimetric Study on the Ion Pairing and Aggregation of 1-Ethyl-3-Methylimidazolium bis(trifluoromethylsulfonyl)amide ([C2mim][NTf2]) and Related Ionic Liquids in the Low-Dielectric Constant Solvent Chloroform. J SOLUTION CHEM 2013. [DOI: 10.1007/s10953-013-0082-y] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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23
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Fumino K, Stange P, Fossog V, Hempelmann R, Ludwig R. Equilibrium of Contact and Solvent-Separated Ion Pairs in Mixtures of Protic Ionic Liquids and Molecular Solvents Controlled by Polarity. Angew Chem Int Ed Engl 2013; 52:12439-42. [DOI: 10.1002/anie.201303944] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2013] [Revised: 07/16/2013] [Indexed: 11/06/2022]
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24
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Fumino K, Stange P, Fossog V, Hempelmann R, Ludwig R. Gleichgewicht zwischen Kontakt- und solvensseparierten Ionenpaaren in Mischungen von protischen ionischen Flüssigkeiten und molekularen Lösungsmitteln durch Polarität kontrolliert. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201303944] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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25
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Stange P, Fumino K, Ludwig R. Ion Speciation of Protic Ionic Liquids in Water: Transition from Contact to Solvent-Separated Ion Pairs. Angew Chem Int Ed Engl 2013; 52:2990-4. [DOI: 10.1002/anie.201209609] [Citation(s) in RCA: 83] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2012] [Indexed: 11/10/2022]
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26
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Stange P, Fumino K, Ludwig R. Ionenspezies in Mischungen aus protischen ionischen Flüssigkeiten und Wasser: Übergang von Kontakt- zu solvensseparierten Ionenpaaren. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201209609] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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27
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Yamaguchi T, Shimoda Y, Koda S. Effects of hydrodynamic interaction on the equivalent conductivity minimum of electrolyte solutions in solvents of low dielectric constant. J Chem Phys 2013; 138:024503. [PMID: 23320700 DOI: 10.1063/1.4773322] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
Abstract
Brownian dynamics simulation on model electrolyte solutions in our previous work [T. Yamaguchi et al., J. Chem. Phys. 134, 244506 (2011)] is extended to include the hydrodynamic interaction between ions, in order to examine its effects on ionic mobility in solvents of low dielectric constant. The effects of the hydrodynamic interaction are rather small as a whole, and the equivalent conductivity minimum is observed in systems with the hydrodynamic interaction. The hydrodynamic interaction increases the self-diffusion coefficient while decreases the equivalent conductivity, thereby increases the deviation from the Nernst-Einstein relationship. Based on the analysis of the time-dependent ionic mobilities, these changes are elucidated in terms of the electrophoretic and relaxation effects. It is also demonstrated that the concentration dependence of the ionic mobilities with the hydrodynamic interaction is reproduced fairly well by a theoretical calculation.
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Affiliation(s)
- T Yamaguchi
- Department of Molecular Design and Engineering, Graduate School of Engineering, Nagoya University, Furo-cho B2-3(611), Chikusa, Nagoya, Aichi 464-8603, Japan.
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28
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Scharf NT, Stark A, Hoffmann MM. Ion Pairing and Dynamics of the Ionic Liquid 1-Hexyl-3-methylimidazolium Bis(irifluoromethylsulfonyl)amide ([C6mim][NTf2]) in the Low Dielectric Solvent Chloroform. J Phys Chem B 2012; 116:11488-97. [DOI: 10.1021/jp3047592] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Nathan T. Scharf
- Department of Chemistry, The
College at Brockport, State University of New York, Brockport, New York 14420, United States
| | - Annegret Stark
- Institute for Industrial Chemistry, University of Leipzig, Linnéstrasse 3-4, 04107
Leipzig, Germany
| | - Markus M. Hoffmann
- Department of Chemistry, The
College at Brockport, State University of New York, Brockport, New York 14420, United States
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Shear and conductivity relaxations of lithium ion electrolytes in polyethyleneglycol dimethyl ethers. J Mol Liq 2012. [DOI: 10.1016/j.molliq.2012.05.019] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Lynden-Bell RM. Concluding remarks. Faraday Discuss 2012. [DOI: 10.1039/c1fd00108f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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