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Auteur : Grafiati

Publié le 18 mai 2024

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1

Lui, Matthew Y., Lorna Crowhurst, Jason P. Hallett, Patricia A. Hunt, Heiko Niedermeyer et Tom Welton. « Salts dissolved in salts : ionic liquid mixtures ». Chemical Science 2, n^o 8 (2011) : 1491. http://dx.doi.org/10.1039/c1sc00227a.

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2

Abai, Mahpuzah, John D. Holbrey, Robin D. Rogers et Geetha Srinivasan. « Ionic liquid S-alkylthiouronium salts ». New Journal of Chemistry 34, n^o 9 (2010) : 1981. http://dx.doi.org/10.1039/c0nj00098a.

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3

Szuromi, Phil. « Stable perovskites with ionic salts ». Science 369, n^o 6499 (2 juillet 2020) : 45.5–46. http://dx.doi.org/10.1126/science.369.6499.45-e.

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4

Curnow, Owen J., Douglas R. MacFarlane et Kelvin J. Walst. « Triaminocyclopropenium salts as ionic liquids ». Chemical Communications 47, n^o 37 (2011) : 10248. http://dx.doi.org/10.1039/c1cc13979g.

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5

Gordon, Charles M., John D. Holbrey, Alan R. Kennedy et Kenneth R. Seddon. « Ionic liquid crystals : hexafluorophosphate salts ». Journal of Materials Chemistry 8, n^o 12 (1998) : 2627–36. http://dx.doi.org/10.1039/a806169f.

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6

Tominaga, Takumi, Takahiro Ueda et Tomoyuki Mochida. « Effect of substituents and anions on the phase behavior of Ru(ii) sandwich complexes : exploring the boundaries between ionic liquids and ionic plastic crystals ». Physical Chemistry Chemical Physics 19, n^o 6 (2017) : 4352–59. http://dx.doi.org/10.1039/c6cp08308k.

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7

Tsunashima, Katsuhiko, Shun Hasegawa, Yoshiharu Okuno et Hirohisa Yamada. « Physicochemical Characterization of Sulfonate-Based Phosphonium Ionic Liquids ». ECS Transactions 109, n^o 14 (30 septembre 2022) : 23–27. http://dx.doi.org/10.1149/10914.0023ecst.

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A new series of phosphonium-based room-temperature ionic liquids containing various sulfonate-based anions was prepared and physicochemically characterized. Although the tetra-n-butylphosphonium salts having alkanesulfonate anions showed relatively high melting points forming the crystalline solids, the phosphonium salts together with amino- and hydroxy-substituted alkanesulfonate anions were viscous liquids at room temperature. Such phosphonium ionic liquids exhibited the relatively high density, the high viscosity and the low conductivity when compared to the conventional phosphonium-based ionic liquids. The phosphonium salts showed higher thermal stability than the corresponding ammonium salts.

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TOLLAN, CHRISTOPHER M., JOSE A. POMPOSO et DAVID MECERREYES. « SYNTHESIS OF FULLEROPYRROLIDINE PYRIDINIUM SALTS BY FACILE ANION EXCHANGE AND THEIR SOLUBILITY ». Nano 04, n^o 05 (octobre 2009) : 299–302. http://dx.doi.org/10.1142/s1793292009001745.

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Several ionic fullerene salts have been prepared based on a fulleropyrrolidine pyridinium cation and four different anions. The initial ionic fullerene can be easily prepared by quaternization of a pyridine-appended fulleropyrrolidine derivative in high yield. Anion exchange is a simple procedure giving several different salts of varying polarity. In addition to their characterization, the quantitative solubility of these salts has been studied in seven different solvents, including an imidazolium ionic liquid.

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9

Lee, W. R., Y. Kim, J. Y. Kim, T. H. Kim, K. D. Ahn et E. Kim. « Electro-fluorescence Switching of Bis-imidazolium onic Liquids ». Journal of Nanoscience and Nanotechnology 8, n^o 9 (1 septembre 2008) : 4630–34. http://dx.doi.org/10.1166/jnn.2008.ic50.

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Room-temperature ionic liquids (RTILs) containing bis-imidazolium salts were explored to control their optical properties of them in an organic device. The neat bis-imidazolium salts showed ionic conductivity of 3.5 × 10−4 S/cm at room-temperature and the electrochemical window was exhibited within ±2.5 V in a two electrode cell. The bis-imidazolium salts were transparent yellow and showed fluorescence upon excitation with light in the range of 360 to 500 nm. A two electrode organic ionic liquid cell was fabricated using a mixture of PEO200BIm-TFSI and electroactive molecules to control the emission property of the ionic liquid by electrochemical methods. The first example of the ionic liquid containing electro-fluorescence switch was explored with an electroactive benzyl viologen (BzV) blend of bis-imidazolium ionic liquid.

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10

Kreusser, Jannette, Fabian Jirasek et Hans Hasse. « Influence of Salts on the Adsorption of Lysozyme on a Mixed-Mode Resin ». Adsorption Science & ; Technology 2021 (23 janvier 2021) : 1–11. http://dx.doi.org/10.1155/2021/6681348.

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Mixed-mode chromatography (MMC), which combines features of ion exchange chromatography (IEC) and hydrophobic interaction chromatography (HIC), is an interesting method for protein separation and purification. The design of MMC processes is challenging as adsorption equilibria are influenced by many parameters, including ionic strength and the presence of different salts in solution. Systematic studies on the influence of those parameters in MMC are rare. Therefore, in the present work, the influence of four salts, namely, sodium chloride, sodium sulfate, ammonium chloride, and ammonium sulfate, on the adsorption of lysozyme on the mixed-mode resin Toyopearl MX-Trp-650M at pH 7.0 and 25°C was studied systematically in equilibrium adsorption experiments for ionic strengths between 0 mM and 3000 mM. For all salts, a noticeable adsorption strength was observed over the entire range of studied ionic strengths. An exponential decay of the loading of the resin with increasing ionic strength was found until approx. 1000 mM. For higher ionic strengths, the loading was found to be practically independent of the ionic strength. At constant ionic strength, the highest lysozyme loadings were observed for ammonium sulfate, the lowest for sodium chloride. A mathematical model was developed that correctly describes the influence of the ionic strength as well as the influence of the studied salts. The model is the first that enables the prediction of adsorption isotherms of proteins on mixed-mode resins in a wide range of technically interesting conditions, accounting for the influence of the ionic strength and four salts of practical relevance.

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11

Suenaga, Kazumasa, Shunichiro Ito, Kazuo Tanaka et Yoshiki Chujo. « Modulation of Properties by Ion Changing Based on Luminescent Ionic Salts Consisting of Spirobi(boron ketoiminate) ». Molecules 27, n^o 11 (26 mai 2022) : 3438. http://dx.doi.org/10.3390/molecules27113438.

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We report development of luminescent ionic salts consisting of the boron ketoiminate structure, which is one of the robust skeletons for expressing aggregation-induced emission (AIE) properties. From the formation of the boron-centered spiro structure with the ketoiminate ligands, we obtained stable ionic salts with variable anions. Since the ionic salts show Tms below 100 °C, it was shown that these salts can be classified as an ionic liquid. By using PF6 anion, the single crystal—which is applicable for X-ray crystallography—was obtained. According to the optical measurements, it was proposed that electronic interaction should occur through the boron center. Moreover, intense emission was observed both in solution and solid. Finally, we demonstrated that the emission color of the PF6 salt was altered from crystal to amorphous by adding mechanical forces. Based on boron complexation and intrinsic solid-state luminescent characters, we achieved obtainment of emissive ionic materials with environmental responsivity.

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12

Ali Bawa, Ramadan. « Synthesis of Some Organic Ammonium Formate Salts and Study of Their Antifungal Properties ». Journal of Clinical Research and Reports 11, n^o 4 (5 octobre 2022) : 01–05. http://dx.doi.org/10.31579/2690-1919/257.

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This work is concerned with the preparation of a number of organic ammonium formate salts (or ionic liquids; ILs) throughout a reaction between the formic acid and some aliphatic and aromatic amines including the ammonia. Five organic ammonium formate salts were formed, some of them were in the form of solid salts and others were as the ionic liquids (ILs) at room temperature. The yields of the prepared organic salts ranged from (21%) to (79%). However, some attempts towards the preparation of other fifteen organic salts were not successful. The resulting five organic ammonium formate salts/ionic liquids were characterized using a number of spectroscopic techniques such as the infrared (IR), the nuclear magnetic resonance spectroscopy (1HNMR) and the mass spectrometry (ms). The collected spectroscopic data confirmed the formation of theses organic ammonium formate salts. The antifungal properties of the prepared organic ammonium formate salts were investigated against the aspergillus niger (A. niger), and the antifungal results were compared with the antifungal effect of the commercially available antifungal agent Daktarin, which was used as a reference in this study.

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13

Rizzo, Carla, Ignazio Fiduccia, Silvestre Buscemi, Antonio Palumbo Piccionello, Andrea Pace et Ivana Pibiri. « Shaping 1,2,4-Triazolium Fluorinated Ionic Liquid Crystals ». Applied Sciences 13, n^o 5 (24 février 2023) : 2947. http://dx.doi.org/10.3390/app13052947.

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The synthesis and thermotropic behaviour of some di-alkyloxy-phenyl-1,2,4-triazolium trifluoromethane-sulfonate salts bearing a seven-carbon atom perfluoroalkyl chain on the cation is herein described. The fluorinated salts presenting a 1,2,4-triazole as a core and differing in the length of two alkyloxy chains on the phenyl ring demonstrated a typical liquid crystalline behaviour. The mesomorphic properties of this set of salts were studied by differential scanning calorimetry and polarized optical microscopy. The thermotropic properties are discussed on the grounds of the tuneable structures of the salts. The results showed the existence of a monotropic, columnar, liquid crystalline phase for the salts tested. An increase in the temperature mesophase range and the presence of two enantiotropic mesophases for the sixteen-atom alkyloxy chain salt can be observed by increasing the length of the alkyloxy chain on the phenyl ring.

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14

Asenbauer, Jakob, Nour Ben Hassen, Bryan D. McCloskey et John M. Prausnitz. « Solubilities and ionic conductivities of ionic liquids containing lithium salts ». Electrochimica Acta 247 (septembre 2017) : 1038–43. http://dx.doi.org/10.1016/j.electacta.2017.07.053.

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15

Clough, Matthew T., Karolin Geyer, Patricia A. Hunt, Alastair J. S. McIntosh, Rebecca Rowe, Tom Welton et Andrew J. P. White. « Azoniaspiro salts : towards bridging the gap between room-temperature ionic liquids and molten salts ». Physical Chemistry Chemical Physics 18, n^o 4 (2016) : 3339–51. http://dx.doi.org/10.1039/c5cp07209c.

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Odendal, James A., Jocelyn C. Bruce, Klaus R. Koch et Delia A. Haynes. « Ring stacking and laddering in ammonium carboxylate salts : extension to secondary ammonium salts ». CrystEngComm 22, n^o 43 (2020) : 7399–406. http://dx.doi.org/10.1039/d0ce00616e.

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17

Gunaratne, H. Q. Nimal, Tiina Laaksonen, Kenneth R. Seddon et Kristiina Wähälä. « 1-(+)-Dehydroabietylimidazolium Salts as Enantiomer Discriminators for NMR Spectroscopy ». Australian Journal of Chemistry 70, n^o 7 (2017) : 845. http://dx.doi.org/10.1071/ch16545.

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Nine new (+)-dehydroabietylimidazolium salts were synthesised and studied as chiral solvating agents for several different racemic aromatic and non-aromatic carboxylate salts. These cationic chiral solvating agents resolve racemic ionic analytes better than non-ionic ones. Bis(dehydroabietylimidazolium) bis(trifluoromethanesulfonimide) gave the best discrimination for the enantiomers of carboxylate salts. Its resolution behaviour was studied by an NMR titration experiment, which indicated 1 : 1 complexation with the racemic analyte. The dehydroabietylimidazolium salts were also useful in enantiomeric excess (ee) determinations, and for the recognition of chirality of racemic aromatic and non-aromatic α-substituted carboxylic acids.

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18

Ono, Bunji, Toshifumi MAWATARI et Nobuyoshi Ohno. « S114031 Tribological characteristics of ionic liquids (Phosphonium salts, Sulfonium salts) atmosphere ». Proceedings of Mechanical Engineering Congress, Japan 2013 (2013) : _S114031–1—_S114031–4. http://dx.doi.org/10.1299/jsmemecj.2013._s114031-1.

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19

Blesic, Marijana, Brendan F. Gilmore, John D. Holbrey, Johan Jacquemin, Gaelle Level, Peter Nockemann et Lorenzo Stella. « An introduction to zwitterionic salts ». Green Chemistry 19, n^o 17 (2017) : 4007–11. http://dx.doi.org/10.1039/c7gc01523b.

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Zwitterionic salts: highly hydrophilic materials, incorporating some characteristics of zwitterions, ionic liquids, and inorganic salts with potential applications in the biomedical field and separation technology.

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Sutto, Thomas E., Hugh C. De Long et Paul C. Trulove. « Physical Properties of Substituted Imidazolium Based Ionic Liquids Gel Electrolytes ». Zeitschrift für Naturforschung A 57, n^o 11 (1 novembre 2002) : 839–46. http://dx.doi.org/10.1515/zna-2002-1101.

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The physical properties of solid gel electrolytes of either polyvinylidene diflurohexafluoropropylene or a combination of polyvinylidene hexafluoropropylene and polyacrylic acid, and the molten salts 1-ethyl-3-methylimidazolium tetrafluoroborate, 1,2-dimethyl-3-n-propylimidazolium tetrafluoroborate, and the new molten salts 1,2-dimethyl-3-n-butylimidazolium tetrafluoroborate, and 1,2-dimethyl-3-n-butylimidazolium hexafluorophosphate were characterized by temperature dependent ionic conductivity measurements for both the pure molten salt and of the molten salt with 0.5 M Li+ present. Ionic conductivity data indicate that for each of the molten salts, the highest concentration of molten salt allowable in a single component polymer gel was 85%, while gels composed of 90%molten salt were possible when using both polyvinylidene hexafluorophosphate and polyacrylic acid. For polymer gel composites prepared using lithium containing ionic liquids, the optimum polymer gel composite consisted of 85% of the 0.5 M Li+/ionic liquid, 12.75% polyvinylidene hexafluoropropylene, and 2.25% poly (1-carboxyethylene). The highest ionic conductivity observed was for the gel containing 90%1-ethyl-3-methyl-imidazolium tetrafluoroborate, 9.08 mS/cm. For the lithium containing ionic liquid gels, their ionic conductivity ranged from 1.45 to 0.05 mS/cm, which is comparable to the value of 0.91 mS/cm, observed for polymer composite gels containing 0.5 M LiBF4 in propylene carbonate.

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21

Peng, Panpan, Baoping Hu, Feipeng Lu, Yao Du, Chaofeng Zhao, Hui Su, Pengcheng Zhang, Shenghua Li et Siping Pang. « Synthesis of energetic salts containing three heterocyclic anions by a one-pot condensation reaction ». New Journal of Chemistry 43, n^o 48 (2019) : 19069–74. http://dx.doi.org/10.1039/c9nj03857d.

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Energetic ionic salts 1 and 2 containing three heterocyclic anions were prepared in a one-pot reaction using 1,3,5-benzenetricarboxaldehyde, aminoguanidine salts, and organic energetic salts (5-nitrotetrazole and 3,5-dinitro-1,2,4-triazole ammonium salt).

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22

Maciejewska, Magdalena, et Marian Zaborski. « Ionic Liquids Applied to Improve the Dispersion of Coagent Particles in an Elastomer ». Journal of Composites 2013 (17 avril 2013) : 1–8. http://dx.doi.org/10.1155/2013/286534.

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The aim of this work was to study the activity of several ionic liquids (alkylimidazolium salts) that are used to improve the dispersion of coagent particles in peroxide-cross-linked hydrogenated acrylonitrile butadiene elastomer (HNBR). Hydrotalcite grafted with monoallyl maleate was applied as a coagent for the HNBR vulcanization. In this paper, we discuss the effect of the ionic liquids (alkylimidazolium salts) with respect to their anion (bromide, chloride, tetrafluoroborate, and hexafluorophosphate) and the length of alkyl chain in the cation (allyl-, ethyl-, butyl-, hexyl-, and octyl-) on the vulcanization kinetics of rubber compounds. The influence of ionic liquids on the cross-link density, the mechanical properties of the vulcanizates, and their resistance to weather ageing were also studied. Alkylimidazolium salts seem to improve the dispersion of the coagent particles and to be active in the cross-linking of HNBR with peroxide. The type of ionic liquid considerably influences the activity of the coagent particles toward the HNBR. The application of ionic liquids increases the cross-link density of the vulcanizates and improves their resistance to weather aging.

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23

Chassagne, Claire, et Maria Ibanez. « Electrophoretic mobility of latex nanospheres in electrolytes : Experimental challenges ». Pure and Applied Chemistry 85, n^o 1 (7 août 2012) : 41–51. http://dx.doi.org/10.1351/pac-con-12-02-12.

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The electrophoretic mobility of sulfate latex nanospheres (radius 300 ± 10 nm) was measured as a function of ionic strength for different salts. The results were obtained from two similar instruments (Malvern ZetaSizer 3000 HSa and Malvern ZetaSizer Nano) using the same dispersions, in the same conditions. The values predicted from the standard electrokinetic model for constant surface charge were in good agreement with the data over a large range of ionic strength. The influence of the protocol used to fill the cells appears to be of importance between 1–10 mM of added monovalent salt. There, the capillary wall properties seem to influence the electrophoretic measurements, even at fast field reversal (FFR), where electroosmosis should be absent. We found that during a series of measurements with monovalent salts, it was best to fill the cell starting from high ionic strength and decreasing the ionic strength during the series. The measurements with divalent salts were not sensitive to the filling procedure.

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Andrews, M. A., D. W. Maughan, T. M. Nosek et R. E. Godt. « Ion-specific and general ionic effects on contraction of skinned fast-twitch skeletal muscle from the rabbit. » Journal of General Physiology 98, n^o 6 (1 décembre 1991) : 1105–25. http://dx.doi.org/10.1085/jgp.98.6.1105.

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We used single fibers from rabbit psoas muscle, chemically skinned with Triton X-100 nonionic detergent, to determine the salts best suited for adjusting ionic strength of bathing solutions for skinned fibers. As criteria we measured maximal calcium-activated force (Fmax), fiber swelling estimated optically, and protein extraction from single fibers determined by polyacrylamide gel electrophoresis with ultrasensitive silver staining. All things considered, the best uni-univalent salt was potassium methanesulfonate, while a number of uni-divalent potassium salts of phosphocreatine, hexamethylenediamine N,N,N',N'-tetraacetic acid, sulfate, and succinate were equally acceptable. Using these salts, we determined that changes in Fmax correlated best with variations of ionic strength (1/2 sigma ci z2i, where ci is the concentration of ion i, and zi is its valence) rather than ionic equivalents (1/2 sigma ci magnitude of zi). Our data indicate that increased ionic strength per sc decreases Fmax, probably by destabilizing the cross-bridge structure in addition to increasing electrostatic shielding of actomyosin interactions.

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Luo, Shih-Ci, Shaowen Sun, Amol R. Deorukhkar, Jung-Tang Lu, Amitabha Bhattacharyya et Ivan J. B. Lin. « Ionic liquids and ionic liquid crystals of vinyl functionalized imidazolium salts ». J. Mater. Chem. 21, n^o 6 (2011) : 1866–73. http://dx.doi.org/10.1039/c0jm02875d.

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26

Chen, Su, Jun Ishii, Shunsuke Horiuchi, Masahiro Yoshizawa-Fujita et Ekaterina I. Izgorodina. « Difference in chemical bonding between lithium and sodium salts : influence of covalency on their solubility ». Physical Chemistry Chemical Physics 19, n^o 26 (2017) : 17366–72. http://dx.doi.org/10.1039/c7cp03009f.

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Grozdanic, Nikola, Marta Calado, Mirjana Kijevcanin, Slobodan Serbanovic et Zoran Visak. « Nicotine aqueous solutions : pH-measurements and salting-out effects - analysis of the effective Gibbs energies of hydration and ionic strengths of the solutions ». Journal of the Serbian Chemical Society 79, n^o 7 (2014) : 829–42. http://dx.doi.org/10.2298/jsc130817109g.

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This work is a continuation of our previous studies on the phase demixing - salting-out effects - in aqueous nicotine solutions. Thus, pH measurements were carried out allowing a brief analysis of the existing hydrogen bond interactions. Salting-out effects - the related experimental cloud point shifts - provoked by the addition of two inorganic salts, potassium nitrate and sodium sulfate, which were not studied so far, were determined. Analysis of the current and our previously reported salting-out/or salting-in phenomena in nicotine aqueous solutions was performed. In this respect, five studied salts were included: four inorganic salts (sodium chloride, potassium nitrate, sodium sulfate and sodium phosphate (Na3PO4)) and ionic liquid 1-ethyl-3-methylimidazolium ethyl sulfate ([C2mim][EtSO4] or ECOENG212?). Based on the pH measurements the effective Gibbs energies of hydration and ionic strengths of the respective ternary solutions were calculated and plotted against the related cloud-point shifts caused by the addition of the salts. For the studied salts, the results and diagram obtained within this work may be used to predict the cloud-points shifts, based on the related quantities of the salts added and/or the molar Gibbs energies of hydration and/or ionic strengths requested in each case.

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Wang, Xinjiao, Michelle Sternberg, Florian T. U. Kohler, Berthold U. Melcher, Peter Wasserscheid et Karsten Meyer. « Long-alkyl-chain-derivatized imidazolium salts and ionic liquid crystals with tailor-made properties ». RSC Adv. 4, n^o 24 (2014) : 12476–81. http://dx.doi.org/10.1039/c3ra47250g.

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29

Oh, Young-Ho, Hyoju Choi, Chanho Park, Dong Wook Kim et Sungyul Lee. « Harnessing Ionic Interactions and Hydrogen Bonding for Nucleophilic Fluorination ». Molecules 25, n^o 3 (7 février 2020) : 721. http://dx.doi.org/10.3390/molecules25030721.

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We review recent works for nucleophilic fluorination of organic compounds in which the Coulombic interactions between ionic species and/or hydrogen bonding affect the outcome of the reaction. SN2 fluorination of aliphatic compounds promoted by ionic liquids is first discussed, focusing on the mechanistic features for reaction using alkali metal fluorides. The influence of the interplay of ionic liquid cation, anion, nucleophile and counter-cation is treated in detail. The role of ionic liquid as bifunctional (both electrophilic and nucleophilic) activator is envisaged. We also review the SNAr fluorination of diaryliodonium salts from the same perspective. Nucleophilic fluorination of guanidine-containing of diaryliodonium salts, which are capable of forming hydrogen bonds with the nucleophile, is exemplified as an excellent case where ionic interactions and hydrogen bonding significantly affect the efficiency of reaction. The origin of experimental observation for the strong dependence of fluorination yields on the positions of -Boc protection is understood in terms of the location of the nucleophile with respect to the reaction center, being either close to far from it. Recent advances in the synthesis of [18F]F-dopa are also cited in relation to SNAr fluorination of diaryliodonium salts. Discussions are made with a focus on tailor-making promoters and solvent engineering based on ionic interactions and hydrogen bonding.

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Tindale, Jocelyn J., et Paul J. Ragogna. « Ionophilic phosphonium-appended carbopalladacycle catalyst for Suzuki–Miyaura and Heck cross-coupling catalysis ». Canadian Journal of Chemistry 88, n^o 1 (janvier 2010) : 27–34. http://dx.doi.org/10.1139/v09-149.

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An ionic liquid, covalently tethered to an efficient transition-metal catalyst in the presence of an ionic liquid reaction medium, can utilize ionophilic interactions to improve catalyst activity, recyclability, and product isolation while decreasing catalyst leaching. Given the greater stability of phosphonium salts in comparison to imidazolium ionic liquids under basic conditions, phosphonium-tagged oxime carbopalladacycle salts were prepared and employed in both Heck and Suzuki–Miyaura reactions. The desired product was obtained in good yields for up to four catalyst cycles in the case of the Suzuki–Miyaura reaction. While taking advantage of the non-volatile nature of ionic liquids, the product was isolated through simple sublimation from the reaction mixture, eliminating issues associated with catalyst leaching, and the remaining ionic liquid solvent–catalyst mixture was ready for further catalysis.

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Yau, Hon Man, Si Jia Chan, Stephen George, James Hook, Anna Croft et Jason Harper. « Ionic Liquids : Just Molten Salts After All ? » Molecules 14, n^o 7 (13 juillet 2009) : 2521–34. http://dx.doi.org/10.3390/molecules14072521.

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32

UEDA, Mikito, et Tetsuya TSUDA. « Aluminum Electrodeposition in Molten Salts/Ionic Liquids ». Journal of The Surface Finishing Society of Japan 71, n^o 12 (1 décembre 2020) : 729–33. http://dx.doi.org/10.4139/sfj.71.729.

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D'Anna, Francesca, Carla Rizzo, Paola Vitale, Giuseppe Lazzara et Renato Noto. « Dicationic organic salts : gelators for ionic liquids ». Soft Matter 10, n^o 46 (22 septembre 2014) : 9281–92. http://dx.doi.org/10.1039/c4sm01360c.

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34

Campbell, J. L. « Ionic Equilibria in Ambient Temperature Molten Salts ». ECS Proceedings Volumes 1992-16, n^o 1 (janvier 1992) : 317–34. http://dx.doi.org/10.1149/199216.0317pv.

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Vondrak, Jiri, Marie Sedlaříková, Josef Maca et Jiri Smilek. « Lithium Salts Dissolved in EMIM Ionic Liquid ». ECS Transactions 87, n^o 1 (26 novembre 2018) : 59–65. http://dx.doi.org/10.1149/08701.0059ecst.

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36

Frenkel, A., E. A. Stern, A. Voronel, M. Qian et M. Newville. « Buckled crystalline structure of mixed ionic salts ». Physical Review Letters 71, n^o 21 (22 novembre 1993) : 3485–88. http://dx.doi.org/10.1103/physrevlett.71.3485.

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Chong, Alison L., Maria Forsyth et Douglas R. MacFarlane. « Novel imidazolinium ionic liquids and organic salts ». Electrochimica Acta 159 (mars 2015) : 219–26. http://dx.doi.org/10.1016/j.electacta.2015.01.180.

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Kumar Muthyala, Manoj, Sunita Choudhary, Khima Pandey, Ganesh M. Shelke, Mukund Jha et Anil Kumar. « Synthesis of Ionic-Liquid-Supported Diaryliodonium Salts ». European Journal of Organic Chemistry 2014, n^o 11 (13 février 2014) : 2365–70. http://dx.doi.org/10.1002/ejoc.201301920.

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Singh, Rajendra P., Rajendar D. Verma, Dayal T. Meshri et Jean'ne M. Shreeve. « Energetic Nitrogen-Rich Salts and Ionic Liquids ». Angewandte Chemie International Edition 45, n^o 22 (26 mai 2006) : 3584–601. http://dx.doi.org/10.1002/anie.200504236.

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Titi, Hatem M., Steven P. Kelley, Max E. Easton, Stephen D. Emerson et Robin D. Rogers. « Formation of ionic co-crystals of amphoteric azoles directed by the ionic liquid co-former 1-ethyl-3-methylimidazolium acetate ». Chemical Communications 53, n^o 61 (2017) : 8569–72. http://dx.doi.org/10.1039/c7cc04429a.

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González-Mendoza, Laura, Jorge Escorihuela, Belén Altava, M. Isabel Burguete et Santiago V. Luis. « Application of optically active chiral bis(imidazolium) salts as potential receptors of chiral dicarboxylate salts of biological relevance ». Organic & ; Biomolecular Chemistry 13, n^o 19 (2015) : 5450–59. http://dx.doi.org/10.1039/c5ob00348b.

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Mahendra B. Dhande, Kiran P. Jumde, Dipak T. Tayade et Ajay B. Wadekar. « Appraisal of ionic behaviors of aqueous sodium and potassium valinate conductometrically ». World Journal of Advanced Research and Reviews 19, n^o 2 (30 août 2023) : 1177–84. http://dx.doi.org/10.30574/wjarr.2023.19.2.1655.

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Dissociation of molecules, ionization and conductivity closely related to each other. Conductivity is very good tool to understand ionic behaviour of electrolytic solution. Bearing these things in mind present scheme designed as apprise ionic behaviour of sodium and potassium valinate with varying concentrations and temperatures. In this work ionic export of sodium and potassium salts of valinate is studied by conductometric method. During this work conductometric parameters (G, k and Λ) and thermodynamic parameters (ΔH, ΔS and ∆G) parameters for sodium and potassium salts of valinate were investigated at concentrations range (0.01 to 0.15) mol L-1 and at 298.15, 303.15, 308.15, and 313.15 K. Observed values of G, k and Λ and thermodynamic parameters values helps to understand a solute-solute, solute-solvent and solvent-solvent interaction and this information helps to understand pharmodynamics of same salts.

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Eisermann, Jana, Lukas Prager et Dariush Hinderberger. « Solvent and concentration effects on highly defined, colloid-like ionic clusters in solution ». Physical Chemistry Chemical Physics 20, n^o 3 (2018) : 1421–30. http://dx.doi.org/10.1039/c7cp06501a.

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Passos, Helena, Teresa B. V. Dinis, Ana Filipa M. Cláudio, Mara G. Freire et João A. P. Coutinho. « Hydrogen bond basicity of ionic liquids and molar entropy of hydration of salts as major descriptors in the formation of aqueous biphasic systems ». Physical Chemistry Chemical Physics 20, n^o 20 (2018) : 14234–41. http://dx.doi.org/10.1039/c8cp01401a.

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Dean, Pamela M., Bronya R. Clare, Vanessa Armel, Jennifer M. Pringle, Craig M. Forsyth, Maria Forsyth et Douglas R. MacFarlane. « Structural Characterization of Novel Ionic Salts Incorporating Trihalide Anions ». Australian Journal of Chemistry 62, n^o 4 (2009) : 334. http://dx.doi.org/10.1071/ch08456.

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The crystal structures of several low-melting salts containing trihalide ions, namely 1-ethyl-3-methylimidazolium tribromide ([C2mim][Br3]), 1-ethyl-1-methylpyrrolidinium tribromide ([C2mpyr][Br3]), and 1-propyl-1-methylpyrrolidinium triiodide ([C3mpyr][I3]), are reported for the first time. Thermal analysis reveals that the tribromide salts are lower-melting than their monohalide analogues. Analysis of the crystal structures allows examination of the influence of the anions on the physical properties of the salts.

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Singh, Rajendra P., et Dayal T. Meshri. « New Trisubstituted Imidazolium-Based Room Temperature Ionic Liquids ». Collection of Czechoslovak Chemical Communications 71, n^o 9 (2006) : 1265–69. http://dx.doi.org/10.1135/cccc20061265.

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Reaction of 1-decyl-2-methylimidazole (1) with linear bromoalkanes 2a, 2b in refluxing acetonitrile leads to the formation of quaternary bromide salts 3a, 3b in excellent isolated yields. Quaternary salts 3a, 3b were metathesized with KPF6 (4a), LiNTf2 (4b), LiBF4 (4c), or KOTf (4d) in water to form the ionic liquids 5a-5h in very good yields. These new ionic liquids are liquid at ambient temperature, immiscible with water, miscible with acetone and chloroform and thermally stable up to 350 °C.

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Ha Quoc, Bang, Van Nguyen Huu et Duy Anh Nguyen. « Research on synthesis of imidazole-based ionic liquids as metal corrosion inhibitors ». Journal of Military Science and Technology, n^o 94 (22 avril 2024) : 102–8. http://dx.doi.org/10.54939/1859-1043.j.mst.94.2024.102-108.

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Ionic liquids (ILs) have gained significant attention in recent years as potential corrosion inhibitors to various applications. Traditional corrosion inhibitors, such as organic compounds and inorganic salts, have limitations in terms of toxicity, volatility, and environmental impact. However, ionic liquids offer a promising alternative. Ionic liquids are salts that exist in a liquid state at or below 100 degrees Celsius. They typically comprise an organic cation and an inorganic or organic anion. The unique combination of a liquid state and ionic nature gives them several advantageous properties, such as high thermal stability, low vapor pressure, and tunable physicochemical properties. Additionally, the charged nature of the ionic liquid allows for electrochemical interactions with the metal surface, further enhancing corrosion inhibition. In this paper, imidazole-based ionic liquids were synthesized by alkylation of imidazole derivatives using 1-bromohexadecane. The anti-corrosion properties of the material were evaluated using the weight method and potentiodynamic polarization method. Results showed that the synthesized ILs are good corrosion inhibitor for CT3 steel.

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Janus, Ewa, et Marcin Gano. « Chiral pyrrolidinium salts derived from menthol as precursor – synthesis and properties ». Polish Journal of Chemical Technology 19, n^o 3 (1 septembre 2017) : 92–98. http://dx.doi.org/10.1515/pjct-2017-0054.

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Abstract Six new chiral pyrolidinium salts with chiral substituent at quaternary nitrogen atom were synthesized with high overall yields from (-)-menthol as cheap chiral precursor and were identified by NMR and HRMS spectroscopy. It was shown that anion type had the effect on chemical shift of protons adjacent to quaternary nitrogen atom and physical properties of these salts. Salts with NTf2 or NPf2 were in a liquid state at room temperature and characterized with the highest thermal stability among others. Furthermore, chiral ionic liquid with NTf2 anion was used as solvent in Diels-Alder reaction and gave higher yield and stereoselectivity than in ionic liquids with achiral cations. Synthesized chiral salts have the potential as chiral solvents in synthesis and auxiliaries in analytical methods to improve chiral recognition.

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Irvine, J. T. S. « A perspective on liquid salts for energy and materials ». Faraday Discussions 190 (2016) : 551–59. http://dx.doi.org/10.1039/c6fd00173d.

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Liquid salts comprising molten salts and ionic liquids offer important media to address both energy and materials challenges. Here we review topics presented in this Faraday Discussion volume related to improved electrowinning of metals, optimisation of processes, new electrochemical device concepts, chemistry in ionic liquids, conversion of biomass, carbon chemistry and nuclear applications. The underlying phenomenology is then reviewed and commentary given. Some future applications are then discussed, further exemplifying the high potential rewards achievable from these chemistries.

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Hennig, P. T., J. A. P. Sprenger, L. N. Schneider, N. V. Ignat’ev et M. Finze. « The pentafluoroethyltrihydridoborate anion : from shock sensitive salts to stable room temperature ionic liquids ». Chemical Communications 55, n^o 43 (2019) : 6110–13. http://dx.doi.org/10.1039/c9cc02935d.

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