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Special Issue "Ionic Liquids, from Their Synthesis to Their Applications"

A special issue of Molecules (ISSN 1420-3049). This special issue belongs to the section "Physical Chemistry".

Deadline for manuscript submissions: 31 December 2019.

Special Issue Editors

Dr. Johan Jacquemin
E-Mail Website
Guest Editor
Dr. Fouad Ghamouss
E-Mail Website
Guest Editor
PCM2E Laboratory, Tours University, Tours, France

Special Issue Information

Dear Colleagues,

The aim of this Special Issue is to provide an original and unique environment for researchers in academia and industry to share and discuss their cutting-edge results on the synthesis and physical and applied chemistry of novel ionic liquids, covering their synthesis, characterization, modelling, and/or applications.

This class of materials possess unique properties that are useful for a wide range of applications in fields as diverse as petrochemicals, energy storage, fine chemicals, pharmaceuticals, biotechnology, hydrometallurgy, environmental remediation, and nuclear sciences. In all these fields, ionic liquids can provide novel research strategy and technologies that enable major contributions towards establishing the sustainable processes required for the future process industry.

Topics: 

  • Application of ionic liquids for the following:
    a. Analytical separations;
    b. Absorption/adsorption;
    c. Crystallization;
    d. Distillation;
    e. Extraction/leaching;
    f. Membrane separations;
    g. Purification;
    h. Novel separation processes;
    i. Energy storage (supercapacitor, metal-ion batteries, etc.).
  • Application of ionic liquids in the following:
    a. Electrochemistry;
    b. Biotechnology and biorefining;
    c. Chemicals, pharmaceuticals, and/or petrochemicals;
    d. Gas capture and utilization;
    e. Environmental remediation;
    f. Polymerization;
    g. Surface cleaning;
    h. Waste treatment.
  • Process modeling and fundamental studies: 
    a. Equations of state;
    b. Molecular modeling and simulation;
    c. Electronic structure calculations;
    d. Process simulation;
    e. Group contribution modeling;
    f. QSPR/QSAR modeling.

Dr. Johan Jacquemin
Dr. Fouad Ghamouss
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All papers will be peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Molecules is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 1800 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • Ionic Liquids
  • Physical Chemistry
  • Chemical Chemistry
  • Characterization
  • Chemical Engineering Applications

Published Papers (3 papers)

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Research

Open AccessArticle
The Relationship between the Structure and Properties of Amino Acid Ionic Liquids
Molecules 2019, 24(18), 3252; https://doi.org/10.3390/molecules24183252 - 06 Sep 2019
Abstract
Ionic liquids based on different l-amino acids (glycine, l-valine, l-leucine, l-isoleucine, l-histidine, l-methionine, l-tyrosine, l-tryptophan, l-arginine, and l-threonine) and different cations (tetrabutylammonium (TBA), tributylmethylammonium (tBMA), didecyldimethylammonium (DDA), (2-hydroxyethyl)trimethylammonium (choline) (Chol), alkyl(C12-C [...] Read more.
Ionic liquids based on different l-amino acids (glycine, l-valine, l-leucine, l-isoleucine, l-histidine, l-methionine, l-tyrosine, l-tryptophan, l-arginine, and l-threonine) and different cations (tetrabutylammonium (TBA), tributylmethylammonium (tBMA), didecyldimethylammonium (DDA), (2-hydroxyethyl)trimethylammonium (choline) (Chol), alkyl(C12-C14) dimethylbenzylammonium (benzalkonium) (BA), dodecyltrimethylammonium (DDTMA), hexadecyltrimethylammonium (HDTMA), octadecyltrimethylammonium (ODTMA) and 1-ethyl-3-methylimidazolium (EMIM)) have been synthesized and characterized by NMR and FTIR. Viscosity, specific rotation, surface activity, thermal stability (TG), and phase transformations (DSC) have been determined and compared with available data. Furthermore, benzalkonium, didecyldimethylammonium, dodecyltrimethylammonium, hexadecyltrimethylammonium, and octadecyltrimethylammonium amino acid ionic liquids have been shown to exhibit surface activity. The dissolution of cellulose in amino acid ionic liquids (AAILs) composed of various cations was also investigated. Cellulose was only dissolved in EMIM salts of amino acids. In particular, the influence of the cation type on selected physicochemical and spectroscopic properties were discussed. The article is a mini review on amino acid ionic liquids. Full article
(This article belongs to the Special Issue Ionic Liquids, from Their Synthesis to Their Applications)
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Open AccessArticle
Efficient Extraction of Anti-Inflammatory Active Ingredients from Schefflera octophylla Leaves Using Ionic Liquid-Based Ultrasonic-Assisted Extraction Coupled with HPLC
Molecules 2019, 24(16), 2942; https://doi.org/10.3390/molecules24162942 - 14 Aug 2019
Abstract
Schefflera octophylla (Lour.) Harms, a kind of traditional Chinese medicine (TCM), is commonly used for anti-inflammatory, analgesic, rheumatism, fever, and hemostasis therapy. In our previous studies, two major triterpenoids were isolated and identified from leaves of S. octophylla, and evaluated for their [...] Read more.
Schefflera octophylla (Lour.) Harms, a kind of traditional Chinese medicine (TCM), is commonly used for anti-inflammatory, analgesic, rheumatism, fever, and hemostasis therapy. In our previous studies, two major triterpenoids were isolated and identified from leaves of S. octophylla, and evaluated for their inhibitory effects on lipopolysaccharide (LPS)-induced nitric oxide production in RAW264.7 cells; both of them displayed significant anti-inflammatory activities at their noncytotoxic concentrations. Therefore, it is very useful to establish an efficient and green extraction method to isolated the two major triterpenoids from leaves of S. octophylla. In this paper, ionic liquid based ultrasonic-assisted extraction (ILUAE) was successfully applied to extract the two major triterpenoids from leaves of S. octophylla. Four single factors (ionic liquids (ILs) concentration, solid–liquid ratio, centrifugal speed, mesh number), with a greater impact on extraction rate, were selected from a variety of influencing factors, and the optimal conditions were obtained by Box–Behnken response surface methodology (RSM). Under optimal conditions, the total extraction yield and extraction rate of two triterpenoids were 288.03 mg/g and 28.80%, respectively, which was 6.80% higher than that of 70% Ethanol (220 mg/g and 22%, respectively). Full article
(This article belongs to the Special Issue Ionic Liquids, from Their Synthesis to Their Applications)
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Open AccessArticle
Estimating the Solubility, Solution Thermodynamics, and Molecular Interaction of Aliskiren Hemifumarate in Alkylimidazolium Based Ionic Liquids
Molecules 2019, 24(15), 2807; https://doi.org/10.3390/molecules24152807 - 01 Aug 2019
Cited by 1
Abstract
Estimating the solubility and solution thermodynamics parameters of aliskiren hemifumarate (AHF) in three different room temperature ionic liquids (RTILs), Transcutol-HP (THP) and water are interesting as there is no solubility data available in the literature. In the current study, the solubility and solution [...] Read more.
Estimating the solubility and solution thermodynamics parameters of aliskiren hemifumarate (AHF) in three different room temperature ionic liquids (RTILs), Transcutol-HP (THP) and water are interesting as there is no solubility data available in the literature. In the current study, the solubility and solution thermodynamics of AHF in three different RTILs, THP and water at the temperature range from 298.2 to 318.2 K under air pressure 0.1 MP were evaluated. The solid phase evaluation by Differential Scanning Calorimetry (DSC) and Powder X-ray Diffraction (PXRD) indicated no conversion of AHF into polymorph. The mole fraction solubility of AHF was found to be highest in 1-hexyl-3-methylimidazolium hexafluorophosphate (HMMHFP) ionic liquid (7.46 × 10−2) at 318.2 K. The obtained solubility values of AHF was regressed by the Apelblat and van’t Hoff models with overall root mean square deviations (RMSD) of 0.62% and 1.42%, respectively. The ideal solubility of AHF was higher compared to experimental solubility values at different temperatures. The lowest activity coefficient was found in HMMHFP, which confirmed highest molecular interaction between AHF–HMMHFP. The estimated thermodynamic parameters confirmed endothermic and entropy driven dissolution of AHF in different RTILs, THP, and water. Full article
(This article belongs to the Special Issue Ionic Liquids, from Their Synthesis to Their Applications)
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