51
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Yang X, Du Y, Feng Z, Liu Z, Li J. Establishment and molecular modeling study of maltodextrin-based synergistic enantioseparation systems with two new hydroxy acid chiral ionic liquids as additives in capillary electrophoresis. J Chromatogr A 2017. [PMID: 28641834 DOI: 10.1016/j.chroma.2017.06.007] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
Discovering more superior performance of ionic liquids for the separation science has triggered increasing interest. In this work, two new Hydroxy acid-based chiral ionic liquids (CILs) (tertramethylammonium-d-pantothenate (TMA-d-PAN), tertramethylammonium-d-quinate (TMA-d-QUI)) were designed and first used as additives to establish the maltodextrin-based synergistic systems for enantioseparation in capillary electrophoresis (CE). Compared to traditional single maltodextrin chiral separation system, significantly improved separations of all tested drugs in the CIL/Maltodextrin synergistic systems were obtained. Some parameters (CIL concentration, maltodextrin concentration, buffer pH, and applied voltage) in the TMA-d-PAN/Maltodextrin synergistic system have been examined and optimized for analytes. The molecular docking software AutoDock was applied to simulate the recognition process and surmise feasible resolution mechanism in the Maltodextrin/CILs synergistic systems, which has certain guiding value.
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Affiliation(s)
- Xuan Yang
- Department of Analytical Chemistry, China Pharmaceutical University, Nanjing 210009, PR China
| | - Yingxiang Du
- Department of Analytical Chemistry, China Pharmaceutical University, Nanjing 210009, PR China; Key Laboratory of Drug Quality Control and Pharmacovigilance (Ministry of Education), China Pharmaceutical University, Nanjing 210009, PR China; State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing 210009, PR China.
| | - Zijie Feng
- Department of Analytical Chemistry, China Pharmaceutical University, Nanjing 210009, PR China
| | - Zongran Liu
- Department of Analytical Chemistry, China Pharmaceutical University, Nanjing 210009, PR China
| | - Jingtang Li
- Department of Analytical Chemistry, China Pharmaceutical University, Nanjing 210009, PR China
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52
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Hanna SL, Huang JL, Swinton AJ, Caputo GA, Vaden TD. Synergistic effects of polymyxin and ionic liquids on lipid vesicle membrane stability and aggregation. Biophys Chem 2017; 227:1-7. [PMID: 28526567 DOI: 10.1016/j.bpc.2017.05.002] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2017] [Revised: 05/04/2017] [Accepted: 05/06/2017] [Indexed: 12/12/2022]
Abstract
Ionic liquids (ILs) have been investigated for potential antibacterial and antibiotic applications due to their ability to destabilize and permeabilize the lipid bilayers in cell membranes. Bacterial assays have shown that combining ILs with antibiotics can provide a synergistic enhancement of their antibacterial activities. We have characterized the mechanism by which the conventional ILs 1-butyl-3-methylimidazolium chloride (BMICl) and 1-butyl-3-methylimidazolium tetrafluoroborate (BMIBF4) enhance the lipid membrane permeabilization of the well-known antibiotic polymyxin B (PMB). We studied the sizes and membrane permeabilities of multilamellar and unilamellar lipid bilayer vesicles in the presence of ILs alone in aqueous solution, PMB alone, and ILs combined together with PMB. Light scattering-based experiments show that vesicle sizes dramatically increase when ILs are combined with PMB, which suggests that the materials combine to synergistically enhance lipid membrane disruption leading to vesicle aggregation. Lipid bilayer leakage experiments using tris (2,2'-bipyridyl) ruthenium (II) (Ru(bpy)32+) trapped in lipid vesicles, in which the trapped Ru(bpy)32+ fluorescence lifetime increases when it leaks out of the vesicle, show that combining BMIBF4 and PMB together permeabilize the membrane significantly more than with PMB or the IL alone. This demonstrates that ILs can assist in antibiotic permeabilization of lipid bilayers which could explain the increased antibiotic activities in the presence of ILs in solution.
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Affiliation(s)
- Sylvia L Hanna
- Department of Chemistry and Biochemistry, Rowan University, 201 Mullica Hill Road, Glassboro, NJ 08028, United States
| | - Jenny L Huang
- Department of Chemistry and Biochemistry, Rowan University, 201 Mullica Hill Road, Glassboro, NJ 08028, United States
| | - Alana J Swinton
- Department of Chemistry and Biochemistry, Rowan University, 201 Mullica Hill Road, Glassboro, NJ 08028, United States
| | - Gregory A Caputo
- Department of Chemistry and Biochemistry, Rowan University, 201 Mullica Hill Road, Glassboro, NJ 08028, United States; Department of Biomedical and Translational Sciences, Rowan University, 201 Mullica Hill Road, Glassboro, NJ 08028, United States
| | - Timothy D Vaden
- Department of Chemistry and Biochemistry, Rowan University, 201 Mullica Hill Road, Glassboro, NJ 08028, United States.
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53
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Lee BS, Lin ST. Prediction and screening of solubility of pharmaceuticals in single- and mixed-ionic liquids using COSMO-SAC model. AIChE J 2017. [DOI: 10.1002/aic.15595] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Affiliation(s)
- Bong-Seop Lee
- Dept. of Fire and Disaster Prevention Engineering; Kyungnam University; Changwon Gyeongsang 51767 Republic of Korea
- Dept. of Chemical Engineering; National Taiwan University; Taipei Taiwan 10617 Taiwan
| | - Shiang-Tai Lin
- Dept. of Chemical Engineering; National Taiwan University; Taipei Taiwan 10617 Taiwan
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54
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Osti NC, Van Aken KL, Thompson MW, Tiet F, Jiang DE, Cummings PT, Gogotsi Y, Mamontov E. Solvent Polarity Governs Ion Interactions and Transport in a Solvated Room-Temperature Ionic Liquid. J Phys Chem Lett 2017; 8:167-171. [PMID: 27966964 DOI: 10.1021/acs.jpclett.6b02587] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
We explore the influence of the solvent dipole moment on cation-anion interactions and transport in 1-butyl-3-methyl-imidazolium bis(trifluoromethylsulfonyl), [BMIM+][Tf2N-]. Free energy profiles derived from atomistic molecular dynamics (MD) simulations show a correlation of the cation-anion separation and the equilibrium depth of the potential of mean force with the dipole moment of the solvent. Correlations of the ion diffusivity with the dipole moment and the concentration of the solvent were further demonstrated by classical MD simulations. Quasi-elastic neutron scattering experiments with deuterated solvents reveal a complex picture of nanophase separation into the ionic liquid-rich and solvent-rich phases. The experiment corroborates the trend of concentration- and dipole moment-dependent enhancement of ion mobility by the solvent, as suggested by the simulations. Despite the considerable structural complexity of ionic liquid-solvent mixtures, we can rationalize and generalize the trends governing ionic transport in these complex electrolytes.
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Affiliation(s)
- Naresh C Osti
- Chemical and Engineering Materials Division, Oak Ridge National Laboratory , PO Box 2008 MS6455, Oak Ridge, Tennessee 37831, United States
| | - Katherine L Van Aken
- Department of Materials Science and Engineering, and A. J. Drexel Nanomaterials Institute, Drexel University , 3141 Chestnut Street, Philadelphia, Pennsylvania 19104, United States
| | - Matthew W Thompson
- Department of Chemical and Biomolecular Engineering, Vanderbilt University , 2201 West End Avenue, Nashville, Tennessee 37235, United States
| | - Felix Tiet
- Department of Chemical and Biomolecular Engineering, Vanderbilt University , 2201 West End Avenue, Nashville, Tennessee 37235, United States
| | - De-En Jiang
- Department of Chemistry, University of California , 900 University Avenue, Riverside, California 92521, United States
| | - Peter T Cummings
- Department of Chemical and Biomolecular Engineering, Vanderbilt University , 2201 West End Avenue, Nashville, Tennessee 37235, United States
| | - Yury Gogotsi
- Department of Materials Science and Engineering, and A. J. Drexel Nanomaterials Institute, Drexel University , 3141 Chestnut Street, Philadelphia, Pennsylvania 19104, United States
| | - Eugene Mamontov
- Chemical and Engineering Materials Division, Oak Ridge National Laboratory , PO Box 2008 MS6455, Oak Ridge, Tennessee 37831, United States
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55
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Desgranges C, Delhommelle J. Evaluation of the grand-canonical partition function using expanded Wang-Landau simulations. V. Impact of an electric field on the thermodynamic properties and ideality contours of water. J Chem Phys 2016; 145:184504. [DOI: 10.1063/1.4967336] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Affiliation(s)
- Caroline Desgranges
- Department of Chemistry, University of North Dakota, 151 Cornell Street Stop 9024, Grand Forks, North Dakota 58202, USA
| | - Jerome Delhommelle
- Department of Chemistry, University of North Dakota, 151 Cornell Street Stop 9024, Grand Forks, North Dakota 58202, USA
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56
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Desgranges C, Delhommelle J. Evaluation of the grand-canonical partition function using expanded Wang-Landau simulations. IV. Performance of many-body force fields and tight-binding schemes for the fluid phases of silicon. J Chem Phys 2016; 144:124510. [PMID: 27036464 DOI: 10.1063/1.4944619] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
We extend Expanded Wang-Landau (EWL) simulations beyond classical systems and develop the EWL method for systems modeled with a tight-binding Hamiltonian. We then apply the method to determine the partition function and thus all thermodynamic properties, including the Gibbs free energy and entropy, of the fluid phases of Si. We compare the results from quantum many-body (QMB) tight binding models, which explicitly calculate the overlap between the atomic orbitals of neighboring atoms, to those obtained with classical many-body (CMB) force fields, which allow to recover the tetrahedral organization in condensed phases of Si through, e.g., a repulsive 3-body term that favors the ideal tetrahedral angle. Along the vapor-liquid coexistence, between 3000 K and 6000 K, the densities for the two coexisting phases are found to vary significantly (by 5 orders of magnitude for the vapor and by up to 25% for the liquid) and to provide a stringent test of the models. Transitions from vapor to liquid are predicted to occur for chemical potentials that are 10%-15% higher for CMB models than for QMB models, and a ranking of the force fields is provided by comparing the predictions for the vapor pressure to the experimental data. QMB models also reveal the formation of a gap in the electronic density of states of the coexisting liquid at high temperatures. Subjecting Si to a nanoscopic confinement has a dramatic effect on the phase diagram with, e.g. at 6000 K, a decrease in liquid densities by about 50% for both CMB and QMB models and an increase in vapor densities between 90% (CMB) and 170% (QMB). The results presented here provide a full picture of the impact of the strategy (CMB or QMB) chosen to model many-body effects on the thermodynamic properties of the fluid phases of Si.
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Affiliation(s)
- Caroline Desgranges
- Department of Chemistry, University of North Dakota, 151 Cornell Street Stop 9024, Grand Forks, North Dakota 58202, USA
| | - Jerome Delhommelle
- Department of Chemistry, University of North Dakota, 151 Cornell Street Stop 9024, Grand Forks, North Dakota 58202, USA
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57
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Shi K, Qiu Y, Stenstrom MK. Effectiveness and potential of straw- and wood-based biochars for adsorption of imidazolium-type ionic liquids. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2016; 130:155-162. [PMID: 27107176 DOI: 10.1016/j.ecoenv.2016.04.017] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/29/2016] [Revised: 04/11/2016] [Accepted: 04/12/2016] [Indexed: 06/05/2023]
Abstract
The growing industrial application of imidazolium-type ionic liquids (ITILs) is likely to result in their release to the environment. Water-soluble ITILs are difficult to remove from wastewaters using traditional adsorbents. In this work, we developed different biochars derived from straw and wood (named as SBB and WBB, respectively) to improve the adsorption effectiveness for removal of ITILs from wastewaters. SBB had high O/C element ratio (0.143), while WBB had high ratio of Vmicro/Vtotal (61.5%) compared with commercial activated carbon (AC). Both of them showed greater adsorption of ITILs than AC with different adsorption mechanisms. FTIR spectra revealed that electrostatic interactions were the dominant driving force in SBB adsorption, while high micropore volume promoted adsorption in WBB. The adsorption of [C2mim][BF4] on SBB and WBB was strongly enhanced by trivalent PO4(3-) anions, suggesting that PO4(3-) anions could be used as promoter to increase the removal efficiency of ITILs from wastewater. Using HCl solution (pH=0.5) as regenerant, SBB and WBB were regenerated with nearly 100% recovery of adsorption capacity over ten consecutive adsorption-desorption cycles. Straw-based biochar and wood-based biochar are efficient sorbents for removal of water-soluble ionic liquids from aqueous solutions.
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Affiliation(s)
- Kaishun Shi
- State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China
| | - Yuping Qiu
- State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China; Civil and Environmental Engineering Department, University of California, 5732 Boelter Hall, Los Angeles 90095-1593, USA.
| | - Michael K Stenstrom
- Civil and Environmental Engineering Department, University of California, 5732 Boelter Hall, Los Angeles 90095-1593, USA
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58
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Qu K, Zeng X. Ionic liquid-doped polyaniline and its redox activities in the zwitterionic biological buffer MOPS. Electrochim Acta 2016. [DOI: 10.1016/j.electacta.2016.03.172] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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59
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Miller MC, Hanna SL, DeFrates KG, Fiebig OC, Vaden TD. Kinetics and mass spectrometric measurements of myoglobin unfolding in aqueous ionic liquid solutions. Int J Biol Macromol 2016; 85:200-7. [DOI: 10.1016/j.ijbiomac.2015.12.067] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2015] [Revised: 12/14/2015] [Accepted: 12/19/2015] [Indexed: 01/27/2023]
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60
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Evaluation of synergistic enantioseparation systems with chiral spirocyclic ionic liquids as additives by capillary electrophoresis. Anal Bioanal Chem 2016; 408:2543-55. [DOI: 10.1007/s00216-016-9356-8] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2015] [Revised: 01/16/2016] [Accepted: 01/22/2016] [Indexed: 10/22/2022]
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61
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Borodin O, Price DL, Aoun B, González MA, Hooper JB, Kofu M, Kohara S, Yamamuro O, Saboungi ML. Effect of water on the structure of a prototype ionic liquid. Phys Chem Chem Phys 2016; 18:23474-81. [DOI: 10.1039/c6cp02191c] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The influence of water on the structure of a prototype ionic liquid (IL) 1-octyl-3-methylimidazolium tetrafluoroborate (C8mimBF4) is examined in the IL-rich regime using high-energy X-ray diffraction (HEXRD) and molecular dynamics (MD) simulations.
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Affiliation(s)
- Oleg Borodin
- Electrochemistry Branch
- Sensor and Electron Devices Directorate
- U.S. Army Research Laboratory
- Adelphi
- USA
| | | | - Bachir Aoun
- Advanced Photon Source
- Argonne National Laboratory
- Argonne
- USA
| | | | - Justin B. Hooper
- Department of Materials Science & Engineering
- University of Utah
- Salt Lake City
- USA
| | - Maiko Kofu
- Institute for Solid State Physics
- University of Tokyo
- Kashiwa
- Japan
| | - Shinji Kohara
- National Institute for Materials Science
- Sayo
- Japan
- JST
- PRESTO
| | - Osamu Yamamuro
- Institute for Solid State Physics
- University of Tokyo
- Kashiwa
- Japan
| | - Marie-Louise Saboungi
- Collegium Sciences et Techniques
- Université d’Orléans and IMPMC-Université Pierre et Marie Curie
- F-75252 Paris
- France
- BCMaterials
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62
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Bešter-Rogač M, Fedotova MV, Kruchinin SE, Klähn M. Mobility and association of ions in aqueous solutions: the case of imidazolium based ionic liquids. Phys Chem Chem Phys 2016; 18:28594-28605. [DOI: 10.1039/c6cp05010g] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Combining MD simulations and RISM calculations with experiments, we demonstrated that the interionic interactions of investigated ILs as model 1,1 electrolytes in water solutions are weak but evidently dependent on the molecular structure.
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Affiliation(s)
| | | | | | - Marco Klähn
- Institute of Chemical and Engineering Sciences
- Agency for Science
- Technology and Research
- Singapore
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63
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Verma PL, Rao SS, Gejji SP. Probing molecular interactions underlying imidazolium and pyridinium based ionic liquids. J Mol Liq 2015. [DOI: 10.1016/j.molliq.2015.10.012] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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64
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Sha M, Dong H, Luo F, Tang Z, Zhu G, Wu G. Dilute or Concentrated Electrolyte Solutions? Insight from Ionic Liquid/Water Electrolytes. J Phys Chem Lett 2015; 6:3713-3720. [PMID: 26713896 DOI: 10.1021/acs.jpclett.5b01513] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
When room-temperature ionic liquids (IL) are used as an electrolyte, their transport behaviors are still under heavy debate due to their complicated ion-associations. In this article, we conducted molecular dynamics simulations to study the molecular scale ion associations from the very dilute 1-butyl-3-methylimidazolium iodide/water solution to the pure IL. It revealed that ions are localized in a multicoordinated ion cage structure with nanoseconds in concentrated IL solutions. Dynamics analyses indicate that the transport of this solution can be depicted by the Debye-Hückel model only in dilute IL/water electrolyte. The velocity and rotational correlation functions showed that the lifetime of translational and rotational motions are at the level of picoseconds and nanoseconds, respectively, because of the ion cage effect. The lifetime of ion association demonstrated that the recombination of association ions was prevalent in IL solutions. It means that the dipolar or stable contact ion-pairs model may not be suitable for depicting the IL transport.
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Affiliation(s)
- Maolin Sha
- Department of Chemistry and Chemical Engineering, Hefei Normal University , Hefei 230061, P. R. China
| | - Huaze Dong
- Department of Chemistry and Chemical Engineering, Hefei Normal University , Hefei 230061, P. R. China
| | - Fabao Luo
- Department of Chemistry and Chemical Engineering, Hefei Normal University , Hefei 230061, P. R. China
| | - Zhongfeng Tang
- Shanghai Institute of Applied Physics, Chinese Academy of Sciences , Shanghai 201800, P.B. Box 800-204, P. R. China
| | - Guanglai Zhu
- Institute of Atomic and Molecular Physics, Anhui Normal University , Wuhu 241000, P. R. China
| | - Guozhong Wu
- Shanghai Institute of Applied Physics, Chinese Academy of Sciences , Shanghai 201800, P.B. Box 800-204, P. R. China
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65
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Lee BS, Lin ST. A Priori Prediction of Dissociation Phenomena and Phase Behaviors of Ionic Liquids. Ind Eng Chem Res 2015. [DOI: 10.1021/acs.iecr.5b01762] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Bong-Seop Lee
- Department of Chemical Engineering, National Taiwan University, Taipei, Taiwan 10617
| | - Shiang-Tai Lin
- Department of Chemical Engineering, National Taiwan University, Taipei, Taiwan 10617
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66
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Seo S, DeSilva MA, Xia H, Brennecke JF. Effect of Cation on Physical Properties and CO2 Solubility for Phosphonium-Based Ionic Liquids with 2-Cyanopyrrolide Anions. J Phys Chem B 2015; 119:11807-14. [PMID: 26268050 DOI: 10.1021/acs.jpcb.5b05733] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A series of tetraalkylphosphonium 2-cyanopyrrolide ([Pnnnn][2-CNPyr]) ionic liquids (ILs) were prepared to investigate the effect of cation size on physical properties and CO2 solubility. Each IL was synthesized in our laboratory and characterized by NMR spectroscopy. Their physical properties, including density, viscosity, and ionic conductivity, were determined as a function of temperature and fit to empirical equations. The density gradually increased with decreasing cation size, while the viscosity decreased noticeably. In addition, the [Pnnnn][2-CNPyr] ILs with large cations exhibited relatively low degrees of ionicity based on analysis of the Walden plots. This implies the presence of extensive ion pairing or formation of aggregates resulting from van der Waals interactions between the long hydrocarbon substituents. The CO2 solubility in each IL was measured at 22 °C using a volumetric method. While the anion is typically known to be predominantly responsible for the CO2 capture reaction, the [Pnnnn][2-CNPyr] ILs with shorter alkyl chains on the cations exhibited slightly stronger CO2 binding ability than the ILs with longer alkyl chains. We attribute this to the difference in entropy of reaction, as well as the variation in the relative degree of ionicity.
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Affiliation(s)
- Samuel Seo
- Department of Chemical and Biomolecular Engineering, University of Notre Dame , Notre Dame, Indiana 46556, United States
| | - M Aruni DeSilva
- Department of Chemical and Biomolecular Engineering, University of Notre Dame , Notre Dame, Indiana 46556, United States
| | - Han Xia
- Department of Chemical and Biomolecular Engineering, University of Notre Dame , Notre Dame, Indiana 46556, United States
| | - Joan F Brennecke
- Department of Chemical and Biomolecular Engineering, University of Notre Dame , Notre Dame, Indiana 46556, United States
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67
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Smith DJ, Shah JK, Maginn EJ. Molecular Dynamics Simulation Study of the Association of Lidocainium Docusate and Its Derivatives in Aqueous Solution. Mol Pharm 2015; 12:1893-901. [DOI: 10.1021/mp5005993] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- David J. Smith
- Department
of Chemical and Biomolecular Engineering and ‡Center for Research Computing, University of Notre Dame, Notre Dame, Indiana 46656 United States
| | - Jindal K. Shah
- Department
of Chemical and Biomolecular Engineering and ‡Center for Research Computing, University of Notre Dame, Notre Dame, Indiana 46656 United States
| | - Edward J. Maginn
- Department
of Chemical and Biomolecular Engineering and ‡Center for Research Computing, University of Notre Dame, Notre Dame, Indiana 46656 United States
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68
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69
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Toledo-Neira C, Álvarez-Lueje A. Ionic liquids for improving the extraction of NSAIDs in water samples using dispersive liquid–liquid microextraction by high performance liquid chromatography-diode array–fluorescence detection. Talanta 2015; 134:619-626. [DOI: 10.1016/j.talanta.2014.11.067] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2014] [Revised: 11/28/2014] [Accepted: 11/29/2014] [Indexed: 12/23/2022]
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70
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Wu Y, Hu N, Yue L, Wei L, Guan W. Effects of polarizability on the structural and thermodynamics properties of [Cnmim][Gly] ionic liquids (n = 1–4) using EEM/MM molecular dynamic simulations. J Chem Phys 2015; 142:064503. [DOI: 10.1063/1.4907281] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- Yang Wu
- Key Laboratory of Green Synthesis and Preparative Chemistry of Advanced Materials, College of Chemistry, Liaoning University, Shenyang 110036, China
| | - Na Hu
- Key Laboratory of Green Synthesis and Preparative Chemistry of Advanced Materials, College of Chemistry, Liaoning University, Shenyang 110036, China
| | - Lili Yue
- Key Laboratory of Green Synthesis and Preparative Chemistry of Advanced Materials, College of Chemistry, Liaoning University, Shenyang 110036, China
| | - Lihong Wei
- Key Laboratory of Green Synthesis and Preparative Chemistry of Advanced Materials, College of Chemistry, Liaoning University, Shenyang 110036, China
| | - Wei Guan
- Key Laboratory of Green Synthesis and Preparative Chemistry of Advanced Materials, College of Chemistry, Liaoning University, Shenyang 110036, China
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71
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Quantifying the hydrogen-bonding interaction between cation and anion of pure [EMIM][Ac] and evidencing the ion pairs existence in its extremely diluted water solution: Via 13 C, 1 H, 15 N and 2D NMR. J Mol Struct 2015. [DOI: 10.1016/j.molstruc.2014.09.023] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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72
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Kumar A, Venkatesu P. A comparative study of myoglobin stability in the presence of Hofmeister anions of ionic liquids and ionic salts. Process Biochem 2014. [DOI: 10.1016/j.procbio.2014.09.014] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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73
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Yoo B, Shah JK, Zhu Y, Maginn EJ. Amphiphilic interactions of ionic liquids with lipid biomembranes: a molecular simulation study. SOFT MATTER 2014; 10:8641-8651. [PMID: 25248460 DOI: 10.1039/c4sm01528b] [Citation(s) in RCA: 92] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Current bottlenecks in the large-scale commercial use of many ionic liquids (ILs) include their high costs, low biodegradability, and often unknown toxicities. As a proactive effort to better understand the molecular mechanisms of ionic liquid toxicities, the work herein presents a comprehensive molecular simulation study on the interactions of 1-n-alkyl-3-methylimidazolium-based ILs with a phosphatidylcholine (PC) lipid bilayer. We explore the effects of increasing alkyl chain length (n = 4, 8, and 12) in the cation and anion hydrophobicity on the interactions with the lipid bilayer. Bulk atomistic molecular dynamics (MD) simulations performed at millimolar (mM) IL concentrations show spontaneous insertion of cations into the lipid bilayer regardless of the alkyl chain length and a favorable orientational preference once a cation is inserted. Cations also exhibit the ability to "flip" inside the lipid bilayer (as is common for amphiphiles) if partially inserted with an unfavorable orientation. Moreover, structural analysis of the lipid bilayer show that cationic insertion induces roughening of the bilayer surface, which may be a precursor to bilayer disruption. To overcome the limitation in the timescale of our simulations, free energies for a single IL cation and anion insertion have been determined based on potential of mean force calculations. These results show a decrease in free energy in response to both short and long alkyl chain IL cation insertion, and likewise for a single hydrophobic anion insertion, but an increase in free energy for the insertion of a hydrophilic chloride anion. Both bulk MD simulations and free energy calculations suggest that toxicity mechanisms toward biological systems are likely caused by ILs behaving as ionic surfactants. [Yoo et al., Soft Matter, 2014].
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Affiliation(s)
- Brian Yoo
- Department of Chemical and Biomolecular Engineering, University of Notre Dame, 182 Fitzpatrick Hall, Notre Dame, Indiana 46556, USA.
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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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75
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Manna A, Kumar A. Invoking Pairwise Interactions in Water-Promoted Diels-Alder Reactions by using Ionic Liquids as Cosolvents. Chemphyschem 2014; 15:3067-77. [DOI: 10.1002/cphc.201402338] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2014] [Indexed: 11/09/2022]
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Ramya KR, Kumar P, Kumar A, Venkatnathan A. Interplay of Phase Separation, Tail Aggregation, and Micelle Formation in the Nanostructured Organization of Hydrated Imidazolium Ionic Liquid. J Phys Chem B 2014; 118:8839-47. [DOI: 10.1021/jp504270b] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- K. R. Ramya
- Department
of Chemistry, Indian Institute of Science Education and Research, Pune 411008, India
| | - Praveen Kumar
- Department
of Chemistry, Indian Institute of Science Education and Research, Pune 411008, India
| | - Ashish Kumar
- Department
of Chemistry, Indian Institute of Technology, Guwahati 781039, India
| | - Arun Venkatnathan
- Department
of Chemistry, Indian Institute of Science Education and Research, Pune 411008, India
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Passos H, Khan I, Mutelet F, Oliveira MB, Carvalho PJ, Santos LMNBF, Held C, Sadowski G, Freire MG, Coutinho JAP. Vapor–Liquid Equilibria of Water + Alkylimidazolium-Based Ionic Liquids: Measurements and Perturbed-Chain Statistical Associating Fluid Theory Modeling. Ind Eng Chem Res 2014. [DOI: 10.1021/ie4041093] [Citation(s) in RCA: 70] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Helena Passos
- Departamento
de Química, CICECO, Universidade de Aveiro, Campus Universitário
de Santiago, 3810-193 Aveiro, Portugal
| | - Imran Khan
- Departamento
de Química, CICECO, Universidade de Aveiro, Campus Universitário
de Santiago, 3810-193 Aveiro, Portugal
| | - Fabrice Mutelet
- Université de Lorraine, Ecole Nationale Supérieure
des Industries Chimiques, Laboratoire Réactions et Génie
des Procédés, CNRS (UMR7274), 1 rue Grandville, BP 20451 54001 Nancy, France
| | - Mariana B. Oliveira
- Departamento
de Química, CICECO, Universidade de Aveiro, Campus Universitário
de Santiago, 3810-193 Aveiro, Portugal
| | - Pedro J. Carvalho
- Departamento
de Química, CICECO, Universidade de Aveiro, Campus Universitário
de Santiago, 3810-193 Aveiro, Portugal
| | - Luís M. N. B. F. Santos
- Centro
de Investigação em Química, Departamento de Química
e Bioquímica, Faculdade de Ciências, Universidade do Porto, Rua do Campo Alegre, 687, 4169-007 Porto, Portugal
| | - Christoph Held
- Laboratory
of Thermodynamics, Department of Biochemical and Chemical Engineering, Technische Universität Dortmund, Emil-Figge-Str. 70, 44227 Dortmund, Germany
| | - Gabriele Sadowski
- Laboratory
of Thermodynamics, Department of Biochemical and Chemical Engineering, Technische Universität Dortmund, Emil-Figge-Str. 70, 44227 Dortmund, Germany
| | - Mara G. Freire
- Departamento
de Química, CICECO, Universidade de Aveiro, Campus Universitário
de Santiago, 3810-193 Aveiro, Portugal
| | - João A. P. Coutinho
- Departamento
de Química, CICECO, Universidade de Aveiro, Campus Universitário
de Santiago, 3810-193 Aveiro, Portugal
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