Impact of nitrile incorporated with hydroxyl, benzyl, and allyl on physicochemical properties of propanenitrile imidazolium-based dual functionalized ionic liquids

The non-volatility, controllable characteristics of ionic liquids (ILs) make them potential materials for various applications. The use of functionalized ionic liquids can improve their physicochemical properties. Propanenitrile imidazolium-based ionic liquids (C 2 CN Rim) with different functional...

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Bibliographic Details
Published in:Ionics 2023-10, Vol.29 (10), p.4067-4076
Main Authors: Ziyada, Abobakr K., Osman, Abdelbagi, Elbashir, Abdullah Ahmed, Rajab, Fahd, Khan, Abdul Majeed, Omar, Mei Musa Ali, Wilfred, Cecilia Devi
Format: Article
Language:English
Subjects:
Anions
Chemistry
Chemistry and Materials Science
Condensed Matter Physics
Controllability
Electrochemistry
Energy Storage
Functional groups
Ionic liquids
Ions
Lattice energy
NMR
Nuclear magnetic resonance
Optical and Electronic Materials
Refractivity
Renewable and Green Energy
Temperature dependence
Thermal expansion
Thermodynamic properties
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Summary:The non-volatility, controllable characteristics of ionic liquids (ILs) make them potential materials for various applications. The use of functionalized ionic liquids can improve their physicochemical properties. Propanenitrile imidazolium-based ionic liquids (C 2 CN Rim) with different functional groups, R (allyl, ethoxyl, and benzyl), and incorporating dioctylsulfosuccinate (DOSS) anion were prepared. The elemental analysis and 13 C and 1 H NMR results confirmed the synthesized IL structures. The density, viscosity, and refractive index of these ILs were measured over a temperature range of 293.15 to 353.15 K. Furthermore, several thermodynamic properties including the thermal expansion coefficient, molar refraction, standard molar entropy, and lattice energy were estimated for these ILs. Findings show that ILs have lower densities, similar refractive indices, higher viscosities, and lower decomposition temperature compared to their analogous incorporating only nitrile functionality. Also, the ILs showed a weak temperature dependency on the thermal expansion coefficients, α p  = 4.75 × 10 −4 to 5.25 × 10 −4  K −1 . These findings provide valuable insights into the properties and potential applications of propanenitrile imidazolium-based ionic liquids incorporating DOSS anion.
ISSN:0947-7047
1862-0760
DOI:10.1007/s11581-023-05106-8