Related Experiment Video
Updated: Apr 22, 2026

Synthesis of Ionic Liquid Based Electrolytes, Assembly of Li-ion Batteries, and Measurements of Performance at High Temperature
Published on: December 20, 2016
Dielectric and shear relaxations of ionic liquid composed of symmetric ions
Tsuyoshi Yamaguchi1, Shinobu Koda1
1Department of Molecular Design and Engineering, Graduate School of Engineering, Furo-cho B2-3 (611), Chikusa, Nagoya, Aichi 464-8603, Japan.
Abstract:
The frequency-dependent conductivity and shear viscosity of an ionic liquid composed of symmetric ions were determined experimentally in the MHz region. The ionic liquid studied was tetraoctylphosphonium bromide. An isomer with an asymmetric cation, trihexyltetradecylphosphonium bromide, was also investigated to clarify the possible role of the reorientational motion of the cations in the two relaxation spectra. Both the conductivity and the shear viscosity show relaxation in the MHz region, and these relaxation spectra scarcely depend on the asymmetry of the cations. It is, therefore, concluded that the coupling of the reorientational mode of cations with these relaxation spectra is marginal, and that these spectra reflect mainly the frequency-dependent translational motion of ions.
More Related Videos
06:44From Molecules to Materials: Engineering New Ionic Liquid Crystals Through Halogen Bonding
Published on: March 24, 2018
08:54Vibrational Spectra of a N719-Chromophore/Titania Interface from Empirical-Potential Molecular-Dynamics Simulation, Solvated by a Room Temperature Ionic Liquid
Published on: January 25, 2020
Related Concept Videos
Ionic Association
Theory of Strong Electrolytes
Intermolecular Forces
Aqueous Solutions and Heats of Hydration
When ionic compounds dissolve in water, the ions in the solid separate and disperse uniformly throughout the solution because water molecules surround and solvate the ions, reducing the strong electrostatic forces between them. This process...
Dielectric Polarization in a Capacitor
Molecular and Ionic Solids
Molecular Solids
Molecular crystalline solids, such as ice, sucrose (table sugar), and iodine, are solids that are composed of neutral molecules as their constituent units. These molecules are held together by weak intermolecular forces such as London dispersion forces, dipole-dipole interactions, or hydrogen bonds, which...