Synthesis of hydrophobic imidazolium ionic liquids and studies of their physiochemical properties

Muhammad Salman; Sooyoung Lee; Hye Jin Lee

doi:10.14478/ace.2021.1021

Synthesis of hydrophobic imidazolium ionic liquids and studies of their physiochemical properties

Muhammad Salman, Sooyoung Lee, Hye Jin Lee

Kyungpook National University

Research output: Contribution to journal › Article › peer-review

1 Scopus citations

Abstract

Two hydrophobic imidazolium based ionic liquids including 1-benzyl-3-butylimidazolium hexafluorophosphate [BzBIM]PF₆ and 1-pentyl-3-butylimidazolium hexafluorophosphate [PBIM]PF₆ having the same anion and different cation parts were synthesized. The structural composition of these ionic liquids were confirmed with Fourier-transform infrared spectroscopy (FT-IR) and proton nuclear magnetic resonance (¹H-NMR). Their physiochemical properties such as viscosity, ionic conductivity and thermal stability alongside electrochemical potential window range for both ionic liquid electrolytes were characterized and compared to each other. The overall results revealed that [BzBIM]PF₆ has higher thermal and electrochemical stabilities and viscosity than that of [PBIM]PF₆ probably due to the presence of benzyl ring in the imidazolium cation providing strong intermolecular π-π interactions.

Original language	English
Pages (from-to)	277-282
Number of pages	6
Journal	Applied Chemistry for Engineering
Volume	32
Issue number	3
DOIs	https://doi.org/10.14478/ace.2021.1021
State	Published - Jun 2021

Keywords

1-Benzyl-3-butylimidazolium hexafluorophosphate
1-Pentyl-3-butylimidazolium hexafluorophosphate
Hydrophobic electrolytes
Ionic liquids
Potential window
Thermal stability

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10.14478/ace.2021.1021

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title = "Synthesis of hydrophobic imidazolium ionic liquids and studies of their physiochemical properties",

abstract = "Two hydrophobic imidazolium based ionic liquids including 1-benzyl-3-butylimidazolium hexafluorophosphate [BzBIM]PF6 and 1-pentyl-3-butylimidazolium hexafluorophosphate [PBIM]PF6 having the same anion and different cation parts were synthesized. The structural composition of these ionic liquids were confirmed with Fourier-transform infrared spectroscopy (FT-IR) and proton nuclear magnetic resonance (1H-NMR). Their physiochemical properties such as viscosity, ionic conductivity and thermal stability alongside electrochemical potential window range for both ionic liquid electrolytes were characterized and compared to each other. The overall results revealed that [BzBIM]PF6 has higher thermal and electrochemical stabilities and viscosity than that of [PBIM]PF6 probably due to the presence of benzyl ring in the imidazolium cation providing strong intermolecular π-π interactions.",

keywords = "1-Benzyl-3-butylimidazolium hexafluorophosphate, 1-Pentyl-3-butylimidazolium hexafluorophosphate, Hydrophobic electrolytes, Ionic liquids, Potential window, Thermal stability",

author = "Muhammad Salman and Sooyoung Lee and Lee, {Hye Jin}",

year = "2021",

month = jun,

doi = "10.14478/ace.2021.1021",

language = "English",

volume = "32",

pages = "277--282",

journal = "Applied Chemistry for Engineering",

issn = "1225-0112",

publisher = "Korean Society of Industrial Engineering Chemistry",

number = "3",

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TY - JOUR

T1 - Synthesis of hydrophobic imidazolium ionic liquids and studies of their physiochemical properties

AU - Salman, Muhammad

AU - Lee, Sooyoung

AU - Lee, Hye Jin

PY - 2021/6

Y1 - 2021/6

N2 - Two hydrophobic imidazolium based ionic liquids including 1-benzyl-3-butylimidazolium hexafluorophosphate [BzBIM]PF6 and 1-pentyl-3-butylimidazolium hexafluorophosphate [PBIM]PF6 having the same anion and different cation parts were synthesized. The structural composition of these ionic liquids were confirmed with Fourier-transform infrared spectroscopy (FT-IR) and proton nuclear magnetic resonance (1H-NMR). Their physiochemical properties such as viscosity, ionic conductivity and thermal stability alongside electrochemical potential window range for both ionic liquid electrolytes were characterized and compared to each other. The overall results revealed that [BzBIM]PF6 has higher thermal and electrochemical stabilities and viscosity than that of [PBIM]PF6 probably due to the presence of benzyl ring in the imidazolium cation providing strong intermolecular π-π interactions.

AB - Two hydrophobic imidazolium based ionic liquids including 1-benzyl-3-butylimidazolium hexafluorophosphate [BzBIM]PF6 and 1-pentyl-3-butylimidazolium hexafluorophosphate [PBIM]PF6 having the same anion and different cation parts were synthesized. The structural composition of these ionic liquids were confirmed with Fourier-transform infrared spectroscopy (FT-IR) and proton nuclear magnetic resonance (1H-NMR). Their physiochemical properties such as viscosity, ionic conductivity and thermal stability alongside electrochemical potential window range for both ionic liquid electrolytes were characterized and compared to each other. The overall results revealed that [BzBIM]PF6 has higher thermal and electrochemical stabilities and viscosity than that of [PBIM]PF6 probably due to the presence of benzyl ring in the imidazolium cation providing strong intermolecular π-π interactions.

KW - 1-Benzyl-3-butylimidazolium hexafluorophosphate

KW - 1-Pentyl-3-butylimidazolium hexafluorophosphate

KW - Hydrophobic electrolytes

KW - Ionic liquids

KW - Potential window

KW - Thermal stability

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U2 - 10.14478/ace.2021.1021

DO - 10.14478/ace.2021.1021

M3 - Article

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SP - 277

EP - 282

JO - Applied Chemistry for Engineering

JF - Applied Chemistry for Engineering

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Synthesis of hydrophobic imidazolium ionic liquids and studies of their physiochemical properties

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Keywords

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