The water-in-salt electrolytes have promoted aqueous Li-ion batteries to become one of the most promising candidates to overcome safety concerns/issues of traditional Li-ion batteries. A simple ...increase of Li-salt concentration in electrolytes can successfully expand the electrochemical stability window of aqueous electrolytes beyond 2 V. However, necessary stability improvements require an increase in complexity of the ternary electrolytes. Here, we have explored the effects of novel, Gemini-type ionic liquids (GILs) as a co-solvent systems in aqueous LiTFSI mixtures and investigated the transport properties of the resulting electrolytes, as well as their electrochemical performance. The devices containing pyrrolidinium-based GILs show superior cycling stability and promising specific capacity in the cells based on the commonly used electrode materials LTO (Li
Ti
O
) and LMO (LiMn
O
).
In this work structuring of water and insight into intermolecular interactions between water and fullerenol are studied throughout the process of forming nanoagglomerates at different temperatures ...applying both experimental and computational approaches. The obtained fullerenol nanoparticles (FNPs) are firstly characterized using dynamic light scattering, atomic force microscopy and transmission electron microscopy. The density, electrical conductivity and dynamic viscosity of aqueous fullerenol solutions are measured in the temperature range of 293.15 to 315.15 K. From the experimental density results other important thermodynamic values, such as apparent molar volumes and the partial molar volumes of water and fullerenol, are also calculated. To support the conclusion derived from the experimental density and calculated volumetric parameters, and to better understand the nature of the interactions with water, molecular dynamics simulations and radial distribution functions are also employed.
•Densities of bmimNTf2 mixtures with propylene carbonate were measured.•Excess properties were calculated.•Formation of hydrogen bonds between IL and PC was discussed.•Electrical conductivity and ...viscosity were also measured.•Influence of temperature and composition on mixture properties were studied.
Densities of binary liquid mixtures of 1-butyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide, bmimNTf2, with propylene carbonate (PC) were measured at temperatures from (293.15 to 323.15)K and at atmospheric pressure over the whole composition range. The electrical conductivity was measured in the range from (293.15 to 328.15)K. Also, viscosity of bmimNTf2+PC binary mixtures was measured from (298.15 to 333.15)K. Excess molar volumes, VE, have been obtained from the experimental densities and were fitted to Redlich–Kister polynomial equation. Other volumetric properties, such as isobaric thermal expansion coefficients, partial molar volumes, apparent molar volumes and partial molar volumes at infinite dilution have been also calculated, in order to obtain information about interactions between PC and selected ionic liquid. Results are discussed in order to understand the hydrogen bonds formation between components of the mixture.
One of the new synthetic cathinones that has a high tendency to replace ecstasy and other established synthetic drugs is
N-
ethylpentylone, (NEP), due to its high potency, stimulative, hedonic and ...hallucinatory effects. In order to examine the interactions of
N
-ethylpentylone, the apparent molar quantities, thermal expansion coefficient and the apparent molar volume at infinite dilution were calculated from the experimental measurements of the density of NEP aqueous solutions in different temperature and molality ranges, from
T
= (293.15 to 313.15) K and from
m
= (0.0590 to 0.0977) mol·kg
−1
, respectively. The taste of
N
-ethylpentylone was estimated by calculated values of apparent specific molar volume at infinite dilution and it was concluded that its taste in aqueous solutions is bitter. Also, using the spectrofluorimetric technique, an intermolecular deactivation of in situ formed ethidium bromide (EB) complex with DNA (EB-DNA) was investigated in the presence of
N
-ethylpentylone. Obtained results indicated good affinity and efficiency of NEP to substitute EB from the EB-DNA complex via intercalation mode. Using molecular docking, it was concluded that the binding energy obtained for NEP indicates its higher affinity to interact with DNA, compared to methamphetamine and amphetamine, but lower compared to ecstasy. The affinity of NEP to bind to bovine serum albumin (BSA) was also investigated and discussed. It is shown that
N
-ethylpentylone could be efficiently transported and distributed through the blood and cells.
The recently established water-in-salt electrolyte (WISE) concept indicates the possible application of aqueous electrolytes in lithium-ion batteries (LiBs). The application of this type of highly ...concentrated electrolyte relies on a proper understanding of their thermodynamically stable solutions. Therefore, fundamental insights regarding the LiTFSI solubility in water are important for the rational design of reproducible and stable WISE.
MD simulations combined with experimental results suggest that the solubility of the most popular WISE salt electrolyte, LiTFSI, is 18.41 mol kg
−1
at 298 K, and that it is directly linked to the level of lithium-ion hydration.
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•New symmetric ILs were used for extraction of widely used toxic textile dyes from waste water.•Low amount of eco-friendly citrate salt was applied to generate ABS.•Efficiency of ...99.4% for removal of Orange II in a single step extraction was achieved.•Maximal efficiency was obtained using minimal amounts of ABS ingredients.•Recycling procedure of applied ILs was successfully tested and proposed.
The novel aqueous biphasic systems based on symmetric imidazolium ionic liquids (IL-ABSs) for the extraction of toxic and resistive dyes from water was studied. The cation symmetricity of ILs strongly influence the outstanding ability of 1,3-dibutylimidazolium dicyanamide, bbimdca, to generate ABS with the exceptionally low amount of eco-friendly citrate salt. A remarkable potential of bbimdca/citrate based ABS to remove Orange II from wastewater with concentration up to 1000 fold and efficiency above 99.4% in a single step was achieved. The improved safety of proposed method nominates it as promising future strategy for pollution prevention.
In this work, four different oxygen functionalized ionic liquids, 1-(3-hydroxypropyl)-3-methylimidazolium chloride,OHC3mImCl, 1-(3-hydroxypropyl)-3-ethylimidazolium chloride OHC3eImCl, ...1-(2-oxobutyl)-3-methylimidazolium chloride, C2OC2mImCl and 1-(4-hydroxy-2-oxobutyl)-3-methylimidazolium chloride, OHC2OC2mImCl were synthesized in liquid state at room temperature. Detailed physico-chemical characterisation (density, viscosity and conductivity) supported with computational simulations for pure ionic liquid and their aqueous solutions were performed. Based on these examinations, interactions in pure ionic liquids and interactions between water and synthesized ionic liquids were discussed.
Ionic liquids (ILs) are well known for their physicochemical properties that recommend them for many purposes. However, many ILs are not environmentally friendly. Bearing these facts in mind, a ...series of imidazoliumand salicylate-based ILs with low general toxicity were designed and their pharmacological potential studied. Herein, their antiproliferative effect against human cancer cell lines and antimicrobial activity on selected Gram-positive and Gram-negative bacteria and Candida strains are presented. ILs with 1-butyl- -3-methylimidazolium or imidazolium cation (IL 1 and compound 5), with the lowest dipole moments and highest lipophilicity, exerted highest cytotoxicity against colon and/or lung cancer cells, manifesting high selectivity to the normal cells. The most non-polar IL with the 1-butyl-3-methylimidazolium cation expressed the strongest anticancer potential, but it was also toxic against normal cells, although its cytotoxicity was less than the cytotoxic effect of commercially used chemotherapeutic agents. The same compounds, IL 1 and compound 5, expressed modest effect on the bacterial strain that causes serious lung diseases and pulmonary infections (Staphylococcus aureus) or which are included in colon cancer formation (Esherichia coli and Enterococcus faecalis). Salicylate itself was toxic against lung cancer cell line A549 and affected some Candida strains.
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•Agregation behavior of two newly synthesized thiazolium salts are studied.•Introduction of –CH3 on thiazolium ring increase thermal stability and decrease CMC.•Micelle formation ...reduces the toxicity of salts.•Additional methylation also reduces toxicity.
Two new thiazolium-based surfactants namely N-dodecylthiazolium bromide, NddTzBr and N-dodecyl-4-methylthiazolium bromide, 4mNddTzBr, were synthesized and investigated as new surface active and antimicrobial agents. Their thermal stability is determined by TG/DSC measurements, and the self-assembly behaviour in aqueous solutions systematically studied applying experimental and molecular dynamics (MD) approach. Obtained results of surface tension and electrical conductivity showed that both newly synthesized salts possess a similar surface activity in aqueous solutions compared to imidazolium-based surface active N-dodecyl-3-methylimidazolium bromide, NddmImBr, ionic liquid. Also, thermodynamic parameters of micellization are calculated and compared with the results obtained by volumetric measurements. Antimicrobial activity of these salts is tested by microdilution method on Gram-positive and Gram-negative bacteria and yeasts. In vitro cytotoxicity study has been performed using human fetal lung fibroblasts (MRC-5) and colon adenocarcinoma (HT-29) cell line.
In this work, the possibilities and benefits of using an ionic liquid as a potential dietary supplement are presented and discussed for the first time. Ionic liquids prevent the development of ...microorganisms due to high ion concentration and thus, prevent perishability of the food products. Thermal stability, structure, as well as the experimental density and viscosity in the temperature range from 20 to 50?C and at the atmospheric pressure 1x105 Pa of newly synthesized cholinium taurate ionic liquid, CholTau, are determined. According to the performed physicochemical characterization, it can be concluded that the synthesized ionic liquid is suitable for application in the food industry. The temperature variation of viscosity and density is discussed in terms of processes, packaging, and storage of CholTau. Also, the antiproliferative activity of CholTau is determined and compared with those obtained for ascorbic acid and Aspirin? as the standards.
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