Ionic liquids: the view from Mount Improbable

Deetlefs, Maggel; Fanselow, Markus; Seddon, Kenneth R.

doi:10.1039/c5ra05829e

Cited by 70 publications

(49 citation statements)

References 32 publications

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“…These fluids show quite high thermal, oxidative, and radiological stability relative to many molecular organic solvents. 26 This has resulted in a wide range of reviews and books which summarise the properties, scope, and applications of these Coulombic fluids. 22 Ionic liquids show little tendency for causing corrosion of typical industrial materials, and may even inhibit corrosion.…”

Section: Rationalementioning

confidence: 99%

Carbon dioxide uptake from natural gas by binary ionic liquid–water mixtures

et al. 2015

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Carbon dioxide solubility in a set of carboxylate ionic liquids formulated with stoicheiometric amounts of water is found to be significantly higher than for other ionic liquids previously reported. This is due to synergistic chemical and physical absorption. The formulated ionic liquid/water mixtures show greatly enhanced carbon dioxide solubility relative to both anhydrous ionic liquids and aqueous ionic liquid solutions, and are competitive with commercial chemical absorbers, such as activated N-methyldiethanolamine or monoethanolamine. † CCDC 1055905 and 1055906. For crystallographic data in CIF or other electronic format see

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Section: Rationalementioning

confidence: 99%

Carbon dioxide uptake from natural gas by binary ionic liquid–water mixtures

et al. 2015

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“…In addition, these novel compounds were erroneously considered as non‐volatile and green solvents, although toxicity and volatility issues have been demonstrated for some ILs . Despite all these problems, the growth of the number of patents and industrial applications demonstrates that the ionic liquid field remains innovative and stimulating. Furthermore, the appearance of ILs mixtures increases the number of possibilities of functionalized compounds and their corresponding new applications …”

Section: Introductionmentioning

confidence: 99%

“…Over recent decades, the field of ionic liquids (ILs) has become one of the most popular areaso fr esearch owing to their adhoc designablep roperties for aw ide range of applications, [1][2][3] and consequently,t he number of publications in the field has grown exponentially.H owever,t his rapid growth has not been accompanied by the required characterization of the used ILs, and there is alackofd eep studies about ILs recovery and recycling, essential for economic viability in industrial applications. [1] In addition, these novel compounds were erroneously considered as non-volatile and green solvents, although toxicity and volatility issues have been demonstrated fors ome ILs. [4,5] Despitea ll these problems, the growth of the number of patentsa nd industrial applications [1] demonstrates that the ionic liquid field remains innovativea nd stimulating.…”

Section: Introductionmentioning

confidence: 99%

“…The thermala nd thermophysical properties and purities of these FILs were carefully determined to avert the dangers of ILs literature. [1] By using these data andt hose previously published, [10,45] the soft-SAFT EoS was applied to model the [C n C 1 Im][C 4 F 9 SO 3 ]f amily,i ncluding the calculation of interfacial properties and viscosities. A molecular model has been proposed and optimized to find ar obust set of parameter values describing the main properties of those compounds in good agreement with the data.…”

Section: Introductionmentioning

confidence: 99%

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Thermophysical Characterization of Ionic Liquids Based on the Perfluorobutanesulfonate Anion: Experimental and Soft‐SAFT Modeling Results

et al. 2017

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Fluorinated ionic liquids (FILs) exhibit complex molecular behavior, where three different nanodomains (polar, hydrogenated nonpolar, and fluorinated nonpolar) have been identified by molecular simulations. Given the high number of possible anion/cation combinations, a theoretical tool able to describe the thermophysical properties of these compounds in a systematic, rapid, and accurate manner is highly desirable. We present here a combined experimental-theoretical methodology to obtain the phase, interface, and transport properties of the 1-alkyl-3-methylimidazolium perfluorobutanesulfonate ([C C Im][C F SO ]) family. In addition to providing new experimental data, an extended version of the Statistical Associating Fluid Theory (soft-SAFT) is used to describe the physicochemical behavior of the [C C Im][C F SO ] family. A mesoscopic molecular model is built based on the analysis of the chemical structures of these FILs, and supported by quantum chemical calculations to study the charge distribution of the anion, where only the basic physical features are considered. The resulting molecular parameters are related to the molecular weight, providing the basis for thermophysical predictions of similar compounds. The theory is also able to predict the minimum in the surface tension versus the length of the hydrogenated alkyl chain, experimentally found at n=8. The viscosity parameters are also in agreement with the free-volume calculations obtained from experiments.

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“…Particularly, it was found that ILs with coordinating anions, such as [OAc] − , were able to dissolve drugs at room temperature, which was attributed to the formation of hydrogen bonds. Biomedical applications of ILs are expected to become one of the major research trends in the next decade . New applications have appeared due to the existence of halogen‐bonding interactions in ILs.…”

Section: Introductionmentioning

confidence: 99%

Identifying Different Halogen‐/Hydrogen‐Bonding Interaction Modes in Binary Systems that Contain an Acetate Ionic Liquid and Various Halobenzenes

Zhou

Deng

et al. 2018

ChemPhysChem

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Elucidation of the nature of noncovalent interactions between ionic liquids (ILs) and halogenated molecules is of particular importance for both fundamental research and drug development. Herein, the noncovalent interactions between 1-butyl-3-methyl-imidazolium acetate and three halobenzenes C F X (X=I, Br, H) were investigated. The iodine derivative shows the strongest interaction with the IL, followed by C F Br and C F H. As indicated by the positive/negative peaks and "multi/two-state" phenomena in the excess IR spectra, combined with DFT calculations, various interaction modes were differentiated. Three complexes, namely anion-C F I, anion-2 C F I, and ion-pair-C F I in the IL-C F I system were identified, whereas only ion-pair-C F Br/C F H complexes, together with self-associates, were found in the other two systems. A possible reason for the behavior of the IL-C F I system could be that the iodine-based halogen-bonding interactions in the system are strong enough to break interactions between the IL cations and anions. This might make C F I a good co-solvent to regulate the properties of acetate-based ILs.

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Ionic liquids: the view from Mount Improbable

Abstract: The ionic liquid literature has grown at a remarkable rate since 1998, making it increasingly difficult to assess the important research directions and the underlying, fundamental understanding of ionic liquids.

Cited by 70 publications

References 32 publications

Carbon dioxide uptake from natural gas by binary ionic liquid–water mixtures

Carbon dioxide uptake from natural gas by binary ionic liquid–water mixtures

Thermophysical Characterization of Ionic Liquids Based on the Perfluorobutanesulfonate Anion: Experimental and Soft‐SAFT Modeling Results

Identifying Different Halogen‐/Hydrogen‐Bonding Interaction Modes in Binary Systems that Contain an Acetate Ionic Liquid and Various Halobenzenes

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