New Directions in Using Ionic Liquids in Analytical Chemistry. 1: Liquid–Liquid Extraction

Pletnev, I. V.; Smirnova, S. V.; Shvedene, N. V.

doi:10.1134/s1061934819070062

Cited by 24 publications

(9 citation statements)

References 237 publications

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“…In this review, we focused on their use in the fabrication of NPs, both metallic and polymeric. Although it is outside the scope of the present review to cover all important applications of ILBSs, it is worthwhile to mention other applications, including their use in enhanced oil recovery, e.g., by flooding with μEs [ 239 , 240 ], and in analytical chemistry, including liquid–liquid extraction [ 241 ], voltammetry and amperometry as organic electrolytes for carrying out electrochemical processes [ 242 ], solid-phase microextraction [ 243 ] and in chromatography [ 244 ]. The ease with which the properties of weakly surface-active ILs and ILBSs can be fine-tuned to the researcher’s need means that the ascending curves shown in Figure 2 is likely to continue in the future.…”

Section: Discussionmentioning

confidence: 99%

Ionic Liquid-Based Surfactants: Recent Advances in Their Syntheses, Solution Properties, and Applications

et al. 2021

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The impetus for the expanding interest in ionic liquids (ILs) is their favorable properties and important applications. Ionic liquid-based surfactants (ILBSs) carry long-chain hydrophobic tails. Two or more molecules of ILBSs can be joined by covalent bonds leading, e.g., to gemini compounds (GILBSs). This review article focuses on aspects of the chemistry and applications of ILBSs and GILBSs, especially in the last ten years. Data on their adsorption at the interface and micelle formation are relevant for the applications of these surfactants. Therefore, we collected data for 152 ILBSs and 11 biamphiphilic compounds. The head ions of ILBSs are usually heterocyclic (imidazolium, pyridinium, pyrrolidinium, etc.). Most of these head-ions are also present in the reported 53 GILBSs. Where possible, we correlate the adsorption/micellar properties of the surfactants with their molecular structures, in particular, the number of carbon atoms present in the hydrocarbon “tail”. The use of ILBSs as templates for the fabrication of mesoporous nanoparticles enables better control of particle porosity and size, hence increasing their usefulness. ILs and ILBSs form thermodynamically stable water/oil and oil/water microemulsions. These were employed as templates for (radical) polymerization reactions, where the monomer is the “oil” component. The formed polymer nanoparticles can be further stabilized against aggregation by using a functionalized ILBS that is co-polymerized with the monomers. In addition to updating the literature on the subject, we hope that this review highlights the versatility and hence the potential applications of these classes of surfactants in several fields, including synthesis, catalysis, polymers, decontamination, and drug delivery.

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Section: Discussionmentioning

confidence: 99%

Ionic Liquid-Based Surfactants: Recent Advances in Their Syntheses, Solution Properties, and Applications

et al. 2021

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“…21 The in situ IL dispersive liquidliquid microextraction (in situ IL-DLLME) method has been developed in recent years, and is based on the characteristics of in situ IL synthesis 22 in which a metathesis reaction occurs between the soluble IL and an anion exchanger, generating a hydrophobic IL as the extraction solvent. 23 The generated water-insoluble IL is dispersed in the sample solution in the form of tiny droplets, which are in full contact with the sample solution without the need for any dispersion solvents, ultrasound or high temperatures, making in situ IL-DLLME fast, simple and environmentally friendly.…”

Section: Introductionmentioning

confidence: 99%

An enhanced dispersive liquid–liquid microextraction method based on solidification of floating organic drops for the determination of pyrethroid pesticides in tea infusions

Qian

Pan

et al. 2022

New J. Chem.

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“…Publications on IL extraction show a similar trend, with this prosperity in IL extraction research originating from the aforementioned first report on hydrophobic ILs. Many review articles on the IL extraction of metal ions, [33][34][35][36][37][38][39][40][41][42][43][44] especially REEs, [45][46][47][48] REEs are shown in Fig. 3.…”

Section: Introductionmentioning

confidence: 99%

Recent Progress in Ionic Liquid Extraction for the Separation of Rare Earth Elements

Okamura

Hirayama

2020

ANAL. SCI.

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This review summarizes recent progress in solvent extraction of rare earth elements (REEs) using an ionic liquid (IL) as the extraction solvent. These IL extraction systems are advantageous owing to the affinity of ILs for both charged and neutral hydrophobic species, in contrast to conventional organic solvent extraction systems. Herein, REE extraction studies using ILs are detailed and classified based on the type of extraction system, namely extraction using anionic ligands, extraction using neutral ligands, synergistic extraction, extraction without extractants, and a specific system using task-specific ionic liquids (TSILs). In IL extraction systems, the extracted complexes are often different from those in organic solvent systems, and the REE extraction and separation efficiencies are often significantly enhanced. Synergistic IL extraction is an effective approach to improving the extractability and separability of REEs. The development of novel TSILs suitable for IL extraction systems is also effective for REE separation.

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New Directions in Using Ionic Liquids in Analytical Chemistry. 1: Liquid–Liquid Extraction

Cited by 24 publications

References 237 publications

Ionic Liquid-Based Surfactants: Recent Advances in Their Syntheses, Solution Properties, and Applications

Ionic Liquid-Based Surfactants: Recent Advances in Their Syntheses, Solution Properties, and Applications

An enhanced dispersive liquid–liquid microextraction method based on solidification of floating organic drops for the determination of pyrethroid pesticides in tea infusions

Recent Progress in Ionic Liquid Extraction for the Separation of Rare Earth Elements

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