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Journal articles on the topic 'Liquid Anion'

Author: Grafiati

Published: 5 June 2025

Last updated: 1 August 2025

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1

VILLAR-GARCIA, IGNACIO J. "The Ionic Liquid-vacuum outer Atomic Surface: a Low-Energy Ion Scattering Study." Chemical Science 5 (February 8, 2024): 4404–18. https://doi.org/10.5281/zenodo.10636560.

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We have identified elements present in the ionic liquid–vacuum outer atomic surface of 23 ionic liquids using high sensitivity low-energy ion scattering (LEIS), a very surface sensitive technique. We show that the probability of cationic heteroatoms being present at the ionic liquid–vacuum outer atomic surface is very low; we detected imidazolium nitrogen for only one of the 18 imidazolium based ionic liquids investigated, no nitrogen for the two ammonium based ionic liquids and a very small amount of phosphorus for two of the three phosphonium-based ionic liquids. We determine tha

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2

Zaleskaya, Marta, Łukasz Dobrzycki, and Jan Romański. "Highly Efficient, Tripodal Ion-Pair Receptors for Switching Selectivity between Acetates and Sulfates Using Solid–Liquid and Liquid–Liquid Extractions." International Journal of Molecular Sciences 21, no. 24 (2020): 9465. http://dx.doi.org/10.3390/ijms21249465.

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A tripodal, squaramide-based ion-pair receptor 1 was synthesized in a modular fashion, and 1H NMR and UV-vis studies revealed its ability to interact more efficiently with anions with the assistance of cations. The reference tripodal anion receptor 2, lacking a crown ether unit, was found to lose the enhancement in anion binding induced by presence of cations. Besides the ability to bind anions in enhanced manner by the “single armed” ion-pair receptor 3, the lack of multiple and prearranged binding sites resulted in its much lower affinity towards anions than in the case of tripodal receptors

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3

VILLAR-GARCIA, IGNACIO J. "A Structural Investigation of Ionic Liquid Mixtures." Physical Chemistry Chemical Physics 18 (February 8, 2024): 8608–24. https://doi.org/10.5281/zenodo.10636595.

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The structures of mixtures of ionic liquids (ILs) featuring a common 1-butyl-3-methylimidazolium ([C<sub>4</sub>C<sub>1</sub>im]<sup>+</sup>) cation but different anions have been investigated both experimentally and computationally. <sup>1</sup>H and <sup>13</sup>C NMR of the ILs and their mixtures has been performed both on the undiluted liquids and those diluted by CD<sub>2</sub>Cl<sub>2</sub>. These experiments have been complemented by quantum chemical density functional theory calculations and molecular dynamics simulations. These techniques have identified the formation of pre

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4

Misawa, Toshiyuki, Jun Kobayashi, Yoshiki Kiyota, et al. "Dimensional Control in Polyoxometalate Crystals Hybridized with Amphiphilic Polymerizable Ionic Liquids." Materials 12, no. 14 (2019): 2283. http://dx.doi.org/10.3390/ma12142283.

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Ionic liquids are an important component for constructing functional materials, and polyxometalate cluster anion is a promising partner for building inorganic–organic hybrid materials comprising ionic liquids. In such hybrid materials, the precise control of the molecular arrangement in the bulk structures is crucial for the emergence of characteristic functions, which can be realized by introducing an amphiphilic moiety into the ionic liquids. Here, an amphiphilic polymerizable imidazolium ionic liquid with a methacryloyl group was firstly hybridized with polyoxometalate anions of octamolybda

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5

Jimenez, Otto A. Q., Josiel M. Costa, Bruno R. de Souza, Abimael C. Medeiros, Edson G. Monteiro-Junior, and Rodrigo C. Basso. "Effect of Sulfate, Citrate, and Tartrate Anions on the Liquid-Liquid Equilibrium Behavior of Water + Surfactant." Processes 10, no. 10 (2022): 2023. http://dx.doi.org/10.3390/pr10102023.

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Cloud point extraction is a versatile method aimed at separating compounds from complex mixtures and arouses great technological interest, particularly among the biochemical industries. However, one must have deep knowledge of the liquid–liquid equilibrium behavior of systems to properly use the method. Thus, we used thermodynamic parameters to evaluate the effect of citrate, sulfate, and tartrate anions on the phase separation of water + Triton X-114® mixtures at 283.2 K, 293.2 K, and 303.2 K. In these systems, increasing the temperature and the anion molar fraction expanded the biphasic regi

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6

Gonfa, G., M. A. Bustam, T. Murugesan, Z. Man, and M. I. Abdul Mutalib. "Thermophysical Properties of Ionic Liquid with Thiocyanate and Dicynamide Anions." Key Engineering Materials 594-595 (December 2013): 953–57. http://dx.doi.org/10.4028/www.scientific.net/kem.594-595.953.

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In this work, density and viscosity of ionic liquids with dicynamide and thiocyanate anion were obtained. The thermal expansion coefficient values were obtained from the experimental density values. The density and viscosity of the ionic liquids depends on the nature of the cations. The density of the ionic liquids increases in the order of [BMIM]+ < [AMI+ < [BzMI+ < [HEMI+ for dicynamide anion. Both for thiocyanate and dicynamide anions the viscosity values increase in the order of [BMI+ < [AMI+ < [BMI+ < [HEMI+. Moreover, viscosity values of ionic liquids with dicynamide an

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7

Hiller-Vallina, Pablo, Carmen Miralles, Andrés Parra-Puerto, and Roberto Gómez. "Ionic Liquids and Ammoniates as Electrolytes for Advanced Sodium-Based Secondary Batteries." Batteries 11, no. 4 (2025): 147. https://doi.org/10.3390/batteries11040147.

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This review aims to provide an up-to-date report on the state of the art of electrolytes based on (quasi-)ionic liquids for sodium batteries. Electrolytes based on conventional ionic liquids are classified into one-anion- and two-anion-type electrolytes according to the number of different anions present in the media. Their application for sodium-based batteries is revised, and the potential advantages of two-anion-type electrolytes are highlighted and rationalized based on the higher tunability of interactions among the different electrolyte components enabled by the presence of two different

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8

Nayak, Srikanth, Kaitlin Lovering, and Ahmet Uysal. "Ion-specific clustering of metal–amphiphile complexes in rare earth separations." Nanoscale 12, no. 39 (2020): 20202–10. http://dx.doi.org/10.1039/d0nr04231e.

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SAXS reveals the specific effect of anions and lanthanide ions on the hierarchical structure of complex fluids in liquid-liquid extraction. The anion-dependency of the mesostructure indicates different lanthanide extraction mechanisms.

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9

Mercy, Maxime, Nora H. de Leeuw, and Robert G. Bell. "Mechanisms of CO2 capture in ionic liquids: a computational perspective." Faraday Discussions 192 (2016): 479–92. http://dx.doi.org/10.1039/c6fd00081a.

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We present computational studies of CO<sub>2</sub> sorption in two different classes of ionic liquid. The addition of carbon dioxide to four superbase ionic liquids, [P<sub>3333</sub>][Benzim], [P<sub>3333</sub>][124Triz], [P<sub>3333</sub>][123Triz] and [P<sub>3333</sub>][Bentriz], was studied using the DFT approach and considering anions alone and individual ion pairs. The addition of CO<sub>2</sub> to the anion alone clearly resulted in the formation of a covalently-bound carbamate function with the strength of binding correlated to experimental capacity. In the ion pair however the cation

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10

Corley, Cynthia A., and Scott T. Iacono. "Recycling of 1,2-Dimethyl-3-propylimidazolium bis(trifluoromethylsulfonyl)imide Ionic Liquid by Stacked Cation and Anion Exchange Adsorption-Desorption." Separations 6, no. 2 (2019): 29. http://dx.doi.org/10.3390/separations6020029.

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There are many advantages to using ionic liquids as solvents or catalysts in chemical processes. Their non-volatile characteristic and high cost, however, can pose economic, environmental, and long-term health concerns. As such, the recovery and recycling of ionic liquids have become essential to mitigate their environmental impact and to reduce costs. Numerous recovery and recycling methods have been reported, including distillation, extraction, membrane separation (a.k.a. filtration), adsorption, crystallization, gravity, and electrochemical separation. Whereas most of these methods recover

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11

Dhar, Kalyan, Jagannath Biswas, Ishmam Ibnul Arabi, Md Shariful Alam, and Md Mahbubur Rahman. "A computational DFT study of Imidazolium based Ionic liquids: binding energy calculation with different anions using Solvation Model." GUB Journal of Science and Engineering 9, no. 1 (2024): 66–70. http://dx.doi.org/10.3329/gubjse.v9i1.74886.

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Basic knowledge of chemical events in the gaseous or liquid phase, as well as on surfaces, is required to determine the macroscopic process. The structure of ionic liquids were investigated using quantum chemistry. Cation and anion can bond together, according to the findings. Their binding and interaction energies reveal that they are produced by hydrogen bonds. The mechanism of a room temperature ionic liquid, such as [BMIM][Cl] (1-butyl-3-Methylimidazolium chloride) monomer, was studied using Density functional theory (DFT) computations using the modern continum solvation model (IEFPCM-SMD)

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12

Zhou, Yafei, Junfeng Zhan, Xiang Gao, Cao Li, Konstantin Chingin, and Zhanggao Le. "The cation−anion interaction in ionic liquids studied by extractive electrospray ionization mass spectrometry." Canadian Journal of Chemistry 92, no. 7 (2014): 611–15. http://dx.doi.org/10.1139/cjc-2014-0023.

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Ionic liquids, known as green solvents, are of sustainable interest in modern chemistry, industry, and many other fields. Here, extractive electrospray ionization has been applied to transfer various room temperature ionic liquids into the gas phase for mass spectrometry analysis. Generated mass spectra display free cations (C+), anions (A–), and small salt clusters, such as C2A+ and CA2–, from strongly diluted ionic liquid samples (<10−8 mol/L) with high sensitivity and tolerance to chemical contamination. The eight ionic liquids based on the 1-butyl-3-methylimidazolium cation with differe

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13

Akamatsu, Hyoma, Sakika Kubo, Seiya Kikuchi, et al. "Dependence of Carboxylate Anions on Physicochemical Properties of Tributyloctylphosphonium-Based Ionic Liquids." ECS Transactions 114, no. 6 (2024): 89–95. http://dx.doi.org/10.1149/11406.0089ecst.

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A new group of tributyloctylphosphonium-based ionic liquids containing several carboxylate anions was designed, prepared and physicochemically characterized. All phosphonium carboxylates obtained in this study became viscous liquids at room temperature. The formate-based ionic liquid exhibited the highest density and number density due to the smallest anion size. All ionic liquids exhibited typical ionic conduction behavior, since the viscosity decreased and the conductivity increased with increasing temperature. It was also found that the viscosity tended to decrease with increasing the carbo

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14

Akamatsu, Hyoma, Katsuhiko Tsunashima, Yusuke Tsuchida, Yoshiharu Okuno, and Hirohisa Yamada. "Preparation and Physicochemical Characterization of Phosphonium-Based Ionic Liquids Containing Carboxylate Anions." ECS Meeting Abstracts MA2023-01, no. 55 (2023): 2709. http://dx.doi.org/10.1149/ma2023-01552709mtgabs.

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Ionic liquids (ILs) are organic salts composed of cation and anion with melting points below 100°C. They have unique characteristic features.1) ILs are also promising liquid materials available for various applications because their function can be easily controlled by changing the combination of cations and anions and by introducing substituents. Among the numerous ILs, considerable ILs based on carboxylate anions have been reported. On the other hand, several published papers reported ILs based on quaternary phosphonium cations, demonstrating relatively high transport properties and thermal

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15

Hu, Daopan, Huanhuan Wang, Kui Gao, et al. "Anion transfer across “anion channels” at the liquid/liquid interface modified by anion-exchange membrane." RSC Adv. 4, no. 100 (2014): 57035–40. http://dx.doi.org/10.1039/c4ra09985k.

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16

Gouveia, Andreia S. L., Lucas Ventaja, Liliana C. Tomé, and Isabel M. Marrucho. "Towards Biohydrogen Separation Using Poly(Ionic Liquid)/Ionic Liquid Composite Membranes." Membranes 8, no. 4 (2018): 124. http://dx.doi.org/10.3390/membranes8040124.

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Considering the high potential of hydrogen (H2) as a clean energy carrier, the implementation of high performance and cost-effective biohydrogen (bioH2) purification techniques is of vital importance, particularly in fuel cell applications. As membrane technology is a potentially energy-saving solution to obtain high-quality biohydrogen, the most promising poly(ionic liquid) (PIL)–ionic liquid (IL) composite membranes that had previously been studied by our group for CO2/N2 separation, containing pyrrolidinium-based PILs with fluorinated or cyano-functionalized anions, were chosen as the start

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17

Triolo, Alessandro, Lisio Valerio Di, Celso Fabrizio Lo, et al. "Liquid structure of a water-in-salt Electrolyte with a remarkably asymmetric anion." Journal of Physical Chemistry B 125 (November 5, 2021): 12500–12517. https://doi.org/10.1021/acs.jpcb.1c06759.

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Water-in-salt systems, i.e., super-concentrated aqueous electrolytes, such as lithium bis(trifluoromethanesulfonyl)imide (21 mol/kgwater), have been recently discovered to exhibit unexpectedly large electrochemical windows and high lithium transference numbers, thus paving the way to safe and sustainable charge storage devices. The peculiar transport features in these electrolytes are influenced by their intrinsically nanoseparated morphology, stemming from the anion hydrophobic nature and manifesting as nanosegregation between anions and water domains. The underlying mechanism behind this str

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18

Mercy, Maxime, S. F. Rebecca Taylor, Johan Jacquemin, Christopher Hardacre, Robert G. Bell, and Nora H. De Leeuw. "The addition of CO2to four superbase ionic liquids: a DFT study." Physical Chemistry Chemical Physics 17, no. 43 (2015): 28674–82. http://dx.doi.org/10.1039/c5cp05153c.

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DFT studies of the addition of CO<sub>2</sub>to superbase ionic liquids show that strength of binding to the anion is correlated to experimental sorption capacity, but anion–cation cohesion with the ionic liquid is weakened by carbamate bond formation.

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19

Keaveney, Sinead T., Dominic V. Francis, Winnie Cao, Ronald S. Haines, and Jason B. Harper. "Effect of Modifying the Anion of an Ionic Liquid on the Outcome of an SN2 Process." Australian Journal of Chemistry 68, no. 1 (2015): 31. http://dx.doi.org/10.1071/ch14117.

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The effect of a series of ionic liquids containing different anions (bis(trifluoromethanesulfonyl)imide, dicyanimide, hexafluorophosphate, tetrafluoroborate, and bromide) on the rate constant of a bimolecular substitution process was investigated. A general ionic liquid effect was noted, with increases in the rate constant observed in all ionic liquids used when compared with that in acetonitrile. Temperature-dependent kinetic data allowed calculation of activation parameters in each of the reaction mixtures considered; these parameters showed that the microscopic origins of the rate enhanceme

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20

Vaid, Thomas P., Steven P. Kelley, and Robin D. Rogers. "Structure-directing effects of ionic liquids in the ionothermal synthesis of metal–organic frameworks." IUCrJ 4, no. 4 (2017): 380–92. http://dx.doi.org/10.1107/s2052252517008326.

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Traditional synthesis of metal–organic frameworks (MOFs) involves the reaction of a metal-containing precursor with an organic linker in an organic solvent at an elevated temperature, in what is termed a `solvothermal' reaction. More recently, many examples have been reported of MOF synthesis in ionic liquids (ILs), rather than an organic solvent, in `ionothermal' reactions. The high concentration of both cations and anions in an ionic liquid allows for the formation of new MOF structures in which the IL cation or anion or both are incorporated into the MOF. Most commonly, the IL cation is inc

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21

Keihankhadiv, Shadi, and Dorota Neugebauer. "Synthesis and Characterization of Linear Copolymers Based on Pharmaceutically Functionalized Monomeric Choline Ionic Liquid for Delivery of p-Aminosalicylate." Pharmaceutics 15, no. 3 (2023): 860. http://dx.doi.org/10.3390/pharmaceutics15030860.

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Bioactive linear poly(ionic liquid)s (PIL) were designed as carriers in drug delivery systems (DDS). Their synthesis was based on a monomeric ionic liquid (MIL) with a relevant pharmaceutical anion to create therapeutically functionalized monomers, which further can be used in the controlled atom transfer radical polymerization (ATRP). The presence of chloride counterions in the quaternary ammonium groups of choline MIL, e.g., [2-(methacryloyloxy)ethyl]trimethyl-ammonium chloride (ChMACl), was stimulated to undergo the anion exchange with p-aminosalicylate sodium salt (NaPAS) as the source of

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22

Jenne, Carsten, and Christoph Kirsch. "Alkoxy substituted halogenated closo-dodecaborates as anions for ionic liquids." Dalton Transactions 44, no. 29 (2015): 13119–24. http://dx.doi.org/10.1039/c5dt01633a.

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Alkoxy substituted halogenated closo-dodecaborate anions [B<sub>12</sub>X<sub>11</sub>OR]<sup>2−</sup> (X = Cl, Br; R = alkyl) have been synthesized and fully characterized. Thermal analyses were carried out to reveal their properties for possible applications in ionic liquids. The new salt [C<sub>6</sub>mim]<sub>2</sub>[B<sub>12</sub>Cl<sub>11</sub>O-propyl] is an elusive example of an ionic liquid containing a doubly charged anion.

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23

Cichowska-Kopczyńska, Iwona, Monika Joskowska, Bartosz Dębski, Justyna Łuczak, and Robert Aranowski. "Influence of Ionic Liquid Structure on Supported Ionic Liquid Membranes Effectiveness in Carbon Dioxide/Methane Separation." Journal of Chemistry 2013 (2013): 1–10. http://dx.doi.org/10.1155/2013/980689.

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This paper indicates the possibility of application of imidazolium ionic liquids immobilized in polymeric supports—supported ionic liquid membranes—in CO2separation from gaseous streams (e.g., biogas). Imidazolium salts containing alkyl fluoride anions, bis(trifluoromethylsulfonyl)imide and trifluoromethanesulfonate, selectively separating CO2were used. The permeability of CO2through membranes was investigated under gas pressure of 30 kPa and temperature range 283–298 K. Permeability values occurred to be higher for ionic liquids containing bis(trifluoromethylsulfonyl)imide anion. Moreover, CO

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24

Li, Chengren, Nan Zhou, Rongde Sun, et al. "The Interactions between Ionic Liquids and Lithium Polysulfides in Lithium–Sulfur Batteries: A Systematic Density Functional Theory Study." Materials 17, no. 11 (2024): 2689. http://dx.doi.org/10.3390/ma17112689.

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Ionic liquids (ILs) based on hybrid anions have recently garnered attention as beguiling alternative electrolytes for energy storage devices. This attention stems from the potential of these asymmetric anions to reduce the melting point of ILs and impede the crystallization of ILs. Furthermore, they uphold the advantages associated with their more conventional symmetric counterparts. In this study, we employed dispersion-corrected density functional theory (DFT-D) calculations to scrutinize the interplay between two hybrid anions found in ionic liquids [FTFSA]− and [MCTFSA]− and the [C4mpyr]+

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25

VILLAR-GARCIA, IGNACIO J. "Fine Tuning the Ionic Liquid-vacuum outer Atomic Surface using Ion Mixtures." Chemical Communications 51 (February 8, 2024): 5367–70. https://doi.org/10.5281/zenodo.10636589.

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Ionic liquid–vacuum outer atomic surfaces can be created that are remarkably different from the bulk composition. In this communication we demonstrate, using low-energy ion scattering (LEIS), that for ionic liquid mixtures the outer atomic surface shows significantly more atoms from anions with weaker cation–anion interactions (and <em>vice versa</em>).

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26

Wang, Huali, Sichen Gu, Ying Bai, et al. "Anion-effects on electrochemical properties of ionic liquid electrolytes for rechargeable aluminum batteries." Journal of Materials Chemistry A 3, no. 45 (2015): 22677–86. http://dx.doi.org/10.1039/c5ta06187c.

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Anion-effects are embodied in: (1) halogen anions resulting from different halogenated imidazole salt species, which is the critical factor for electrochemical windows; (2) aluminum chloride anions resulting from different AlCl<sub>3</sub>/imidazole salt mole ratios, which is the determinant of electrochemical activities.

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27

Suchentrunk, Christof, and Nikolaus Korber. "Reduktion von Isochinolin und Indol mit Cäsium in flüssigem Ammoniak / Reduction of Isoquinoline and Indole with Cesium in Liquid Ammonia." Zeitschrift für Naturforschung B 58, no. 10 (2003): 990–96. http://dx.doi.org/10.1515/znb-2003-1009.

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Isoquinoline and indole were reduced with solutions of cesium in liquid ammonia and the resulting crystalline compounds isolated as ammonia-rich solvate crystals. The reduction of isoquinoline yields the anion bisisoquinoline-2,2’-diide in the compound Cs2C18H14N2 · (7/2) NH3 as the result of a coupling reaction. Indole is reduced to the 5,8-dihydroindolide anion in the ammoniate CsC8H8N · 3NH3. Both anions display interactions between their aromatic π-systems and the cesium cations.

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28

Jesus, Ana R., Luís R. Raposo, Mário R. C. Soromenho, et al. "New Non-Toxic N-alkyl Cholinium-Based Ionic Liquids as Excipients to Improve the Solubility of Poorly Water-Soluble Drugs." Symmetry 13, no. 11 (2021): 2053. http://dx.doi.org/10.3390/sym13112053.

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In this work, we prepared new biocompatible N-alkyl cholinium-based ionic liquids to be used as cosolvents to improve the solubility of poorly water-soluble drugs, namely, sodium diclofenac and paracetamol. In this set of ionic liquids, we intend to understand the effect of increasing the asymmetry of the ionic liquid cation/anion by growing the length of one of the alkyl chains attached to the nitrogen center/sulfonate center on the dissolution capacity of the ionic liquid. The addition of these new ionic liquids to water increased the dissolution capacity of the drugs up to four-times that i

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29

Grassl, Tobias, and Nikolaus Korber. "Crystal structure of rubidium methyldiazotate." Acta Crystallographica Section E Crystallographic Communications 73, no. 2 (2017): 159–61. http://dx.doi.org/10.1107/s2056989016020429.

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The title compound, Rb+·H3CN2O−, has been crystallized in liquid ammonia as a reaction product of the reductive ammonolysis of the natural compound streptozocin. Elemental rubidium was used as reduction agent as it is soluble in liquid ammonia, forming a blue solution. Reductive bond cleavage in biogenic materials under kinetically controlled conditions offers a new approach to gain access to sustainably produced raw materials. The anion is nearly planar [dihedral angle O—N—N—C = −0.4 (2)°]. The Rb+cation has a coordination number of seven, and coordinates to five anions. One anion is boundvia

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30

Mizuta, Tatsumi, Shu Takai, Toshiki Nishihata, Kenji Sueyoshi, Tatsuro Endo, and Hideaki Hisamoto. "A lipophilic ionic liquid-based dye for anion optodes: importance of dye lipophilicity and application to heparin measurement." Analyst 145, no. 16 (2020): 5430–37. http://dx.doi.org/10.1039/d0an00335b.

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A fully lipophilic ionic liquid comprising a lipophilic fluorescein anion and a trihexyltetradecylphosphonium cation was synthesized and used as the plasticizer for a PVC membrane optode, demonstrating high sensitivity, rapid, and reversible responses toward anions and heparin.

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31

Gschwend, Florence J. V., Jason P. Hallett, and Agnieszka Brandt-Talbot. "Exploring the Effect of Water Content and Anion on the Pretreatment of Poplar with Three 1-Ethyl-3-methylimidazolium Ionic Liquids." Molecules 25, no. 10 (2020): 2318. http://dx.doi.org/10.3390/molecules25102318.

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We report on the pretreatment of poplar wood with three different 1-ethyl-3-methylimidazolium ionic liquids, [EMim][OAc], [EMim][MeSO3], and [EMim][HSO4], at varying water contents from 0–40 wt% at 100 °C. The performance was evaluated by observing the lignin and hemicellulose removal, as well as enzymatic saccharification and lignin yield. The mechanism of pretreatment varied between the ionic liquids studied, with the hydrogen sulfate ionic liquid performing delignification and hemicellulose hydrolysis more effectively than the other solvents across the investigated water content range. The

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32

Udabe, Esther, Anthony Sommers, Maria Forsyth, and David Mecerreyes. "Cation Effect in the Corrosion Inhibition Properties of Coumarate Ionic Liquids and Acrylic UV-Coatings." Polymers 12, no. 11 (2020): 2611. http://dx.doi.org/10.3390/polym12112611.

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Chromate free corrosion inhibitors are searched for to mitigate the economic loss caused by mid-steel corrosion. Here, we show metal-free organic inhibitors having free coumarate anions that can be used either as direct corrosion inhibitors or incorporated into a polymer coating obtained by UV-curing. Four different ionic liquid monomers and polymer coatings with hexoxycoumarate anion and different polymerizable counter cations were investigated. Potentiodynamic polarization, electrochemical impedance spectroscopy, and surface analyses have verified their corrosion inhibition performance on a

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33

Naranjo, María C., Andres E. Redondo, Jacqueline C. Acuña, Nicole S. M. Vieira, João M. M. Araújo, and Ana B. Pereiro. "Synthesis and Characterization of Fluorinated Phosphonium Ionic Liquids to Use as New Engineering Solvents." ChemEngineering 6, no. 3 (2022): 38. http://dx.doi.org/10.3390/chemengineering6030038.

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In this work, a set of novel fluorinated ionic liquids (FILs), based on different tetra-alkyl-phosphonium cations with perfluorobutanesulfonate and perfluoropentanoate anions, were synthesized and characterized in order to check their suitability to apply as engineering solvents. Thermophysical and thermal properties were both determined between 293.15 and 353.15 K, and the molecular volumes and free volumes and the coefficients of isobaric thermal expansion were determined from experimental values of refractive index and density. Lastly, the Walden plot was used to evaluate the ionicity of th

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34

Lee, Yi Tong, Sujan Chowdhury, Mohamad Azmi Bustam, Mohammed Ibrahim Abdul Mutalib, and Muti Mohamed Norani. "Morphology Controlled Ionothermal Synthesis and Characterization of Ceria Nanomaterials." Advanced Materials Research 1024 (August 2014): 112–15. http://dx.doi.org/10.4028/www.scientific.net/amr.1024.112.

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Crystalline ceria nanomaterials have been successfully synthesized through ionothermal treatment method. Morphology of the ceria nanoparticles are confirmed with scanning electron microscopy (SEM), transmission electron microscopy (TEM) with an average size of 6-30 nm and with the N2adsoprtion-desorption technique in the range of 46-62 m2g-1in the presence of ionic liquid as base on acetate anion, trifluoroacetate anion, dicyanamide anion as organic linker, cerium nitrate hexahydrate as precursor and ammonia. It was found that the cerium oxide synthesized by acetate anion based ionic liquid ha

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35

Abdul, Rahoof K. A., C. Fathima Naja M., and Shahin Thayyil Mohamed. "TOXICITY PREDICTION OF IMIDAZOLIUM AND PYRIDINIUM IONIC LIQUIDS: A DFT-BASED APPROACH." INTERNATIONAL EDUCATIONAL JOURNAL OF SCIENCE AND ENGINEERING - IEJSE 7, no. 8 (2024): 18–23. https://doi.org/10.5281/zenodo.15608196.

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Ionic liquids (ILs) are defined as salts that melt below 100<sup>0</sup>C and are typically made up of bulky organic cations paired with inorganic/organic anions. Even though ILs are green solvents due to their unique properties like low volatility, high thermal stability, and recyclability, they will have a certain level of toxicity. This study investigates the structural properties of imidazolium and pyridinium-based ionic liquids and predicts their toxicity using density functional theory (DFT) calculations. The study examines the influence of size, symmetry, and electronegativity of anion

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Saraji, Mohammad, and Hoda Ghambari. "Dispersive liquid–liquid microextraction based on liquid anion exchanger for the direct extraction of inorganic anions." Journal of Chromatography A 1574 (November 2018): 27–35. http://dx.doi.org/10.1016/j.chroma.2018.09.013.

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Sun, Xiaowei, Zhimin Jin, Lei Yang, et al. "Ultrasonic-Assisted Extraction of Procyanidins Using Ionic Liquid Solution fromLarix gmeliniiBark." Journal of Chemistry 2013 (2013): 1–9. http://dx.doi.org/10.1155/2013/541037.

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An ionic liquid-based ultrasonic-assisted extraction method has been developed for the effective extraction of procyanidins fromLarix gmeliniibark. So as to evaluate the performance of ionic liquids in ultrasonic-assisted extraction process, the effects caused by changes in the anion and the alkyl chain length of the cation on the extraction efficiency were investigated in this paper. The results indicated that the characteristics of anions had remarkable effects on the extraction efficiency of procyanidins, and 1-butyl-3-methylimidazolium bromide ([Bmim]Br) aqueous solution was the best among

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Rauber, Daniel, Andreas Hofmann, Frederik Philippi, et al. "Structure-Property Relation of Trimethyl Ammonium Ionic Liquids for Battery Applications." Applied Sciences 11, no. 12 (2021): 5679. http://dx.doi.org/10.3390/app11125679.

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Ionic liquids are attractive and safe electrolytes for diverse electrochemical applications such as advanced rechargeable batteries with high energy densities. Their properties that are beneficial for energy storage and conversion include negligible vapor-pressure, intrinsic conductivity as well as high stability. To explore the suitability of a series of ionic liquids with small ammonium cations for potential battery applications, we investigated their thermal and transport properties. We studied the influence of the symmetrical imide-type anions bis(trifluoromethanesulfonyl)imide ([TFSI]−) a

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Patil, Amol Baliram, and Bhalchandra Mahadeo Bhanage. "Modern ab initio valence bond theory calculations reveal charge shift bonding in protic ionic liquids." Physical Chemistry Chemical Physics 18, no. 23 (2016): 15783–90. http://dx.doi.org/10.1039/c6cp02819e.

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Koshel’, N. D., S. A. Koshel’, N. S. Gerasika, E. P. Levchenko та O. V. Chervakova. "Physico-Сhemical Properties of Aqueous Solutions of Diethanolamine Borate". Elektronnaya Obrabotka Materialov 58, № 4 (2022): 19–28. http://dx.doi.org/10.52577/eom.2022.58.4.19.

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The concentration functions of the electrical conductivity and pH for aqueous solutions of an ionic liquid (IL) based on diethanolamine and boric acid (DEAB) have been determined. Correlations have been established between the physicochemical properties of an aqueous solution of DEAB and the processes of dissociation of the components of the system. It was shown that anions are charge carriers in DEAB solutions. It was found that an aqueous solution of DEAB possesses unipolar electrical conductivity and anion-exchange properties with an anion transfer number of 0.79

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Joseph, Stefanie, Christof Suchentrunk, and Nikolaus Korber. "Dissolving Silicides: Syntheses and Crystal Structures of New Ammoniates Containing Si52– and Si94– Polyanions and the Role of Ammonia of Crystallisation." Zeitschrift für Naturforschung B 65, no. 9 (2010): 1059–65. http://dx.doi.org/10.1515/znb-2010-0901.

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The dissolution of the ternary material K6Rb6Si17 in liquid ammonia yields the solvate compound Rb4Si9 ・ 5NH3, which contains fourfold negatively charged nine atom silicon clusters Si94−. Using additionally the [2.2.2] cryptand during the dissolution results in the solvate [K(2.2.2- crypt)]2Si5 ・ 4NH3 , in which the Si52− anion is present in the crystal structure. The Si52− anion has the shape of a nearly ideal trigonal bipyramid. The starting material K6Rb6Si17 contains both Si44− and Si94− Zintl anions. In ammoniate crystal structures, Si94− anions are accessible independently of Si44− anion

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Sakal, Salem A. "TERNARY LIQUID-LIQUID EQUILIBRIA FOR {BENZENE + CYCLOHEXANE + DIFFERENT IONIC LIQUIDS } at T= 298.2 K and P=1 atm: EFFECT OF CATION AND ANION ON SEPARATION PERFORMANCE." Scientific Journal of Applied Sciences of Sabratha University 1, no. 1 (2018): 10–24. http://dx.doi.org/10.47891/sabujas.v1i1.10-24.

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Ionic liquids (ILs) based on imidazolium and pyridinium cations and differenttypes of anions containing transition metals were investigated for extraction of benzene from cyclohexane. The Liquid-liquid equilibrium (LLE) data are presented for six ternary systems of (Cyclohexane + Benzene + an ionic Liquid) at 298.15 K and atmospheric pressure. The ILs used in these systems are [Bmim][FeCl4], [Bmim][AlCl4], [Bmim][CuCl2], [BuPy][FeCl4]), [BuPy][AlCl4], and [C6Py][FeCl4] were all prepared in the lab. The influence of cation and anion structure of ILs on the separation selectivity and capacity fo

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Tupkar, Hrishikesh, Jack Verich, Sila Alemdar, Jack McAlpine, and Matthew A. Gebbie. "Enhancing Interfacial Capacitance Using Anionic Amphiphiles in Ionic Liquid Electrolyte Blends." ECS Meeting Abstracts MA2024-02, no. 57 (2024): 3854. https://doi.org/10.1149/ma2024-02573854mtgabs.

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The acceleration of climate change due to carbon emissions has generated an imminent need to transition towards renewable energy sources. However, the intermittent nature of renewable sources like wind or solar energy necessitates breakthroughs in energy storage devices that can rapidly charge and discharge. This demand creates a new role for high power density supercapacitors. While supercapacitors can quickly discharge electricity, they are limited by low energy densities. This limitation in energy density has generated research interest into charge storage mechanisms at interfaces and new t

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Gebbie, Matthew A., and Jack McAlpine. "Modulating Entropic Driving Forces to Promote Metal Ion Mobility in Ionic Liquids." ECS Meeting Abstracts MA2023-02, no. 56 (2023): 2725. http://dx.doi.org/10.1149/ma2023-02562725mtgabs.

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Ionic liquids and organic ionic plastic crystals promise to provide safer, nonflammable alternatives to the unstable organic electrolytes currently used in commercial batteries. However, the performance of ionic liquids and organic ionic plastic crystals as battery electrolytes has been hindered by poor lithium transport, in large part due to the formation of strong lithium-anion complexes. Similar ion coordination exists in ionic liquids containing dissolved sodium, magnesium, and calcium, suggesting that design of ionic liquids for sodium and multivalent battery chemistries will face similar

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Andrews, Rebecca, Sabera Begum, Christopher J. Clemett, et al. "Self‐Assembled Anion‐Binding Cryptand for the Selective Liquid–Liquid Extraction of Phosphate Anions." Angewandte Chemie 132, no. 46 (2020): 20660–64. http://dx.doi.org/10.1002/ange.202009960.

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Andrews, Rebecca, Sabera Begum, Christopher J. Clemett, et al. "Self‐Assembled Anion‐Binding Cryptand for the Selective Liquid–Liquid Extraction of Phosphate Anions." Angewandte Chemie International Edition 59, no. 46 (2020): 20480–84. http://dx.doi.org/10.1002/anie.202009960.

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Zhou, Qiang, Yunchang Fan, and Sheli Zhang. "Highly Efficient and Selective Extraction of Gold from Thiosulfate Leaching Solution Using Functionalized Dicationic Ionic Liquids." Molecules 29, no. 11 (2024): 2659. http://dx.doi.org/10.3390/molecules29112659.

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Thiosulfate leaching has been regarded as a promising alternative to cyanidation, but it still faces the challenge of the recovery of low content of gold from high concentrations of thiosulfate solutions. Liquid–liquid extraction is a method to address this issue but is still limited by the use of volatile and toxic organic solvents. To overcome this limitation, this work synthesized some functionalized dicationic ionic liquids (DILs) to serve as extraction solvents for the recovery of the gold–thiosulfate complex, [Au(S2O3)2]3−, from thiosulfate solutions. Experimental results indicated that

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Khan, Huma Warsi, Amal A. M. Elgharbawy, Mohamed Azmi Bustam, Masahiro Goto, and Muhammad Moniruzzaman. "Ionic Liquid-Based Green Emulsion Liquid Membrane for the Extraction of the Poorly Soluble Drug Ibuprofen." Molecules 28, no. 5 (2023): 2345. http://dx.doi.org/10.3390/molecules28052345.

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Ibuprofen (Ibf) is a biologically active drug (BADs) and an emerging contaminant of concern (CECs) in aqueous streams. Due to its adverse effects upon aquatic organisms and humans, the removal and recovery of Ibf are essential. Usually, conventional solvents are employed for the separation and recovery of ibuprofen. Due to environmental limitations, alternative green extracting agents need to be explored. Ionic liquids (ILs), emerging and greener alternatives, can also serve this purpose. It is essential to explore ILs that are effective for recovering ibuprofen, among millions of ILs. The con

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Escorihuela, Jorge, Abel García-Bernabé, Álvaro Montero, Óscar Sahuquillo, Enrique Giménez, and Vicente Compañ. "Ionic Liquid Composite Polybenzimidazol Membranes for High Temperature PEMFC Applications." Polymers 11, no. 4 (2019): 732. http://dx.doi.org/10.3390/polym11040732.

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A series of proton exchange membranes based on polybenzimidazole (PBI) were prepared using the low cost ionic liquids (ILs) derived from 1-butyl-3-methylimidazolium (BMIM) bearing different anions as conductive fillers in the polymeric matrix with the aim of enhancing the proton conductivity of PBI membranes. The composite membranes prepared by casting method (containing 5 wt. % of IL) exhibited good thermal, dimensional, mechanical, and oxidative stability for fuel cell applications. The effects of anion, temperature on the proton conductivity of phosphoric acid-doped membranes were systemati

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Borman, Christopher J., Peter V. Bonnesen, and Bruce A. Moyer. "Selectivity Control in Synergistic Liquid–Liquid Anion Exchange of Univalent Anions via Structure-Specific Cooperativity between Quaternary Ammonium Cations and Anion Receptors." Analytical Chemistry 84, no. 19 (2012): 8214–21. http://dx.doi.org/10.1021/ac301315c.

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