Liquid window of some biologically-active ionic liquids

Parajó, Juan José; Villanueva, M.; Sánchez, Pablo; Salgado, Juan José

doi:10.1016/j.jct.2018.06.014

Cited by 16 publications

(5 citation statements)

References 37 publications

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“…71 The huge difference between the solidification points and the melting point, ΔT = 55 K, is due to the presence of an important supercooling effect which is usual in the thermal behavior of ILs. 71,72 The solidification point here observed does not agree with the value given in our previous paper, 278 K, 54 which was established by visual inspection of the sample after long stabilization times at each scanned temperature. This discrepancy comes from the fact that this process is strongly dependent on the experimental conditions, such as cooling rate or the mass of sample.…”

Section: Resultscontrasting

confidence: 87%

New Insights on the Characterization of the Ionic Liquid Crystal 1-Ethyl-3-Methylimidazolium Decylsulfate

et al. 2019

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The ionic liquid 1-ethyl-3-methylimidazolium decylsulfate [EMIm][DSO4] is a salt that jellifies when it is mixed with a certain amount of water. In this hydrated state, it is a birefringent hydrogel that can be considered as a highly viscous ionic liquid crystal. In this paper, the liquid crystal phase of [EMIm][DSO4] and its birefringence dispersion are studied for a sample hydrated by atmospheric water absorption to saturation. Isotropic refractive index dispersion at the isotropic liquid state is also measured. The refractive index at the fast and slow axes of the material is determined by Abbe refractometry while birefringence dispersion and isotropic index dispersion are measured by refractive index spectral broadband interferometry over a broad spectral range at several temperatures. The liquid crystal phase structure is characterized through different experimental techniques and simulations. The study reveals the existence of a lamellar lyotropic liquid crystal phase in the thermal range from 278 to 309 K. The birefringence is achromatic and nontemperature dependent within the experimental resolution with a value of Δn = 4.08(12) × 10–3.

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Section: Resultscontrasting

confidence: 87%

New Insights on the Characterization of the Ionic Liquid Crystal 1-Ethyl-3-Methylimidazolium Decylsulfate

et al. 2019

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“…To perform the data analysis and create the model, a comprehensive database of IL T m was compiled from various journal articles, ,− …”

Section: Methodsmentioning

confidence: 99%

Ionic Liquid Melting Points: Structure–Property Analysis and New Hybrid Group Contribution Model

Mital

Nancarrow

Ibrahim

et al. 2022

Ind. Eng. Chem. Res.

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Melting point (T m) is one of the defining characteristics of ionic liquids (ILs) and is often one of the most important factors in their selection for applications in separation processes, lubrication, or thermal energy storage. Due to the almost limitless number of theoretically possible ILs, each with incrementally different physiochemical properties, there is significant scope for designing ILs for specific applications. However, the need for extensive synthesis and experimental characterization to find the optimum IL is a major barrier. Therefore, it is essential that predictive tools are developed for estimating the physiochemical properties of ILs. The starting point for any such approach should be the prediction of T m since most other property models will be based on the assumption that the IL is in the liquid phase at the application temperature. While several attempts have previously been made at developing group contribution methods (GCMs) for estimating IL T m, the complex relationship between the IL structure and T m has resulted in only limited success. In this study, an extensive database of IL T m has been compiled and used as the basis for a top-down structure–property analysis. Based on the findings, a new hybrid GCM has been developed, which combines functional group parameters with simple, indirect structural parameters derived from the structure–property analysis. The new hybrid GCM has a mean absolute percentage error (MAPE) of 8.6% over the dataset of around 1700 data points and performs quantitatively and qualitatively better than the standard GCM approach.

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“…The obtained experimental values were compared with available literature data for the ionic liquid [C 1 C 1 IM][DMP] ( T g = 210.2 K) . The difference in glass transition temperature at the level of 1.3% allows us to conclude that the data are in good agreement.…”

Section: Resultsmentioning

confidence: 97%

Physicochemical and Thermodynamic Investigation of Ethanolic Solution of Phosphonium-Based Ionic Liquids─Measurements, Correlations, and Application to Absorption Cycles

Królikowska,

Skonieczny,

Paduszyński

2023

J. Chem. Eng. Data

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Liquid window of some biologically-active ionic liquids

Cited by 16 publications

References 37 publications

New Insights on the Characterization of the Ionic Liquid Crystal 1-Ethyl-3-Methylimidazolium Decylsulfate

New Insights on the Characterization of the Ionic Liquid Crystal 1-Ethyl-3-Methylimidazolium Decylsulfate

Ionic Liquid Melting Points: Structure–Property Analysis and New Hybrid Group Contribution Model

Physicochemical and Thermodynamic Investigation of Ethanolic Solution of Phosphonium-Based Ionic Liquids─Measurements, Correlations, and Application to Absorption Cycles

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