TY  - JOUR
AU  - Višak, Zoran P.
AU  - Calado, Marta S.
AU  - Vuksanović, Jelena
AU  - Ivaniš, Gorica
AU  - Branco, Adriana S. H.
AU  - Grozdanić, Nikola
AU  - Kijevčanin, Mirjana
AU  - Šerbanović, Slobodan P.
PY  - 2019
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4133
AB  - This article principally reviews our research related to liquid-liquid and solid-liquid phase behavior of imidazolium- and phosphonium-based ionic liquids, mainly having bistriflamide ([NTf2](-)) or triflate ([OTf](-)) anions, with several aliphatic and aromatic solutes (target molecules). The latter include: (i) diols and triols: 1,2-propanediol, 1,3-propanediol and glycerol; (ii) polymer poly(ethylene glycol) (PEG): average molecular mass 200, 400 and 2050 - PEG200 (liquid), PEG400 (liquid) and PEG2050 (solid), respectively; (iii) polar aromatic compounds: nicotine, aniline, phenolic acids (vanillic, ferulic and caffeic acid,), thymol and caffeine and (iv) non-polar aromatic compounds (benzene, toluene, p-xylene). In these studies, the effects of the cation and anion, cation alkyl chain and PEG chain lengths on the observed phase behaviors were scrutinized. Thus, one of the major observations is that the anion - bistriflamide/triflate - selection usually had strong, sometimes really remarkable effects on the solvent abilities of the studied ionic liquids. Namely, in the case of the hydrogen-bonding solutes, the ionic liquids with the triflate anion generally exhibited substantially higher solubility than those having the bistriflamide anion. Nevertheless, with the aromatic compounds the situation was the opposite - in most of the cases it was the bistriflamide anion that favoured solubility. Moreover, our other studies confirmed the ability of PEG to dissolve both polar and non-polar aromatic compounds. Therefore, two general possibilities of application of alternative, environmentally acceptable, solvents of tuneable solvent properties appeared. One is to use homogeneous mixtures of two ionic liquids having [NTf2](-) and [OTf](-) anions as mixed solvents. The other, however, envisages the application of homogeneous and heterogeneous (PEG + ionic liquid) solutions as tuneable solvents for aromatic solutes. Such mixed solvents have potential applications in separation of the aforesaid target molecules from their aqueous solutions or in extraction from original matrices. From the fundamental point of view the phase equilibrium studies reviewed herein and the diversity of the pure compounds - ionic liquids and target molecules - represent a good base for the discussion of interactions between the molecules that exist in the studied solutions.
PB  - Elsevier, Amsterdam
T2  - Arabian Journal of Chemistry
T1  - Solutions of ionic liquids with diverse aliphatic and aromatic solutes - Phase behavior and potentials for applications: A review article
EP  - 1640
IS  - 7
SP  - 1628
VL  - 12
DO  - 10.1016/j.arabjc.2014.10.003
ER  - 

@article{
author = "Višak, Zoran P. and Calado, Marta S. and Vuksanović, Jelena and Ivaniš, Gorica and Branco, Adriana S. H. and Grozdanić, Nikola and Kijevčanin, Mirjana and Šerbanović, Slobodan P.",
year = "2019",
abstract = "This article principally reviews our research related to liquid-liquid and solid-liquid phase behavior of imidazolium- and phosphonium-based ionic liquids, mainly having bistriflamide ([NTf2](-)) or triflate ([OTf](-)) anions, with several aliphatic and aromatic solutes (target molecules). The latter include: (i) diols and triols: 1,2-propanediol, 1,3-propanediol and glycerol; (ii) polymer poly(ethylene glycol) (PEG): average molecular mass 200, 400 and 2050 - PEG200 (liquid), PEG400 (liquid) and PEG2050 (solid), respectively; (iii) polar aromatic compounds: nicotine, aniline, phenolic acids (vanillic, ferulic and caffeic acid,), thymol and caffeine and (iv) non-polar aromatic compounds (benzene, toluene, p-xylene). In these studies, the effects of the cation and anion, cation alkyl chain and PEG chain lengths on the observed phase behaviors were scrutinized. Thus, one of the major observations is that the anion - bistriflamide/triflate - selection usually had strong, sometimes really remarkable effects on the solvent abilities of the studied ionic liquids. Namely, in the case of the hydrogen-bonding solutes, the ionic liquids with the triflate anion generally exhibited substantially higher solubility than those having the bistriflamide anion. Nevertheless, with the aromatic compounds the situation was the opposite - in most of the cases it was the bistriflamide anion that favoured solubility. Moreover, our other studies confirmed the ability of PEG to dissolve both polar and non-polar aromatic compounds. Therefore, two general possibilities of application of alternative, environmentally acceptable, solvents of tuneable solvent properties appeared. One is to use homogeneous mixtures of two ionic liquids having [NTf2](-) and [OTf](-) anions as mixed solvents. The other, however, envisages the application of homogeneous and heterogeneous (PEG + ionic liquid) solutions as tuneable solvents for aromatic solutes. Such mixed solvents have potential applications in separation of the aforesaid target molecules from their aqueous solutions or in extraction from original matrices. From the fundamental point of view the phase equilibrium studies reviewed herein and the diversity of the pure compounds - ionic liquids and target molecules - represent a good base for the discussion of interactions between the molecules that exist in the studied solutions.",
publisher = "Elsevier, Amsterdam",
journal = "Arabian Journal of Chemistry",
title = "Solutions of ionic liquids with diverse aliphatic and aromatic solutes - Phase behavior and potentials for applications: A review article",
pages = "1640-1628",
number = "7",
volume = "12",
doi = "10.1016/j.arabjc.2014.10.003"
}

Višak, Z. P., Calado, M. S., Vuksanović, J., Ivaniš, G., Branco, A. S. H., Grozdanić, N., Kijevčanin, M.,& Šerbanović, S. P.. (2019). Solutions of ionic liquids with diverse aliphatic and aromatic solutes - Phase behavior and potentials for applications: A review article. in Arabian Journal of Chemistry
Elsevier, Amsterdam., 12(7), 1628-1640.
https://doi.org/10.1016/j.arabjc.2014.10.003

Višak ZP, Calado MS, Vuksanović J, Ivaniš G, Branco ASH, Grozdanić N, Kijevčanin M, Šerbanović SP. Solutions of ionic liquids with diverse aliphatic and aromatic solutes - Phase behavior and potentials for applications: A review article. in Arabian Journal of Chemistry. 2019;12(7):1628-1640.
doi:10.1016/j.arabjc.2014.10.003 .

Višak, Zoran P., Calado, Marta S., Vuksanović, Jelena, Ivaniš, Gorica, Branco, Adriana S. H., Grozdanić, Nikola, Kijevčanin, Mirjana, Šerbanović, Slobodan P., "Solutions of ionic liquids with diverse aliphatic and aromatic solutes - Phase behavior and potentials for applications: A review article" in Arabian Journal of Chemistry, 12, no. 7 (2019):1628-1640,
https://doi.org/10.1016/j.arabjc.2014.10.003 . .