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Related Concept Videos

Intermolecular Forces03:13

Intermolecular Forces

Atoms and molecules interact through bonds (or forces): intramolecular and intermolecular. The forces are electrostatic as they arise from interactions (attractive or repulsive) between charged species (permanent, partial, or temporary charges) and exist with varying strengths between ions, polar, nonpolar, and neutral molecules. The different types of intermolecular forces are ion–dipole, dipole–dipole, hydrogen bonds, and dispersion; among these, dipole–dipole, hydrogen bonds, and dispersion...

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Related Experiment Video

Updated: May 24, 2026

In Situ SIMS and IR Spectroscopy of Well-defined Surfaces Prepared by Soft Landing of Mass-selected Ions
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In Situ SIMS and IR Spectroscopy of Well-defined Surfaces Prepared by Soft Landing of Mass-selected Ions

Published on: June 16, 2014

A systematic molecular simulation study of ionic liquid surfaces using intrinsic analysis methods.

György Hantal1, Iuliia Voroshylova, M Natália D S Cordeiro

  • 1LSRE-Laboratory of Separation and Reaction Engineering-Associate Laboratory LSRE/LCM, Faculdade de Engenharia, Universidade do Porto, Rua Dr Roberto Frias, 4200-465 Porto, Portugal.

Physical Chemistry Chemical Physics : PCCP
|March 15, 2012
PubMed
Summary

Ionic liquid surfaces exhibit distinct layering, with alkyl chains at the outermost regions. Molecular simulations reveal how changing parameters like cation chain length and anion size impact this interfacial structure.

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Vibrational Spectra of a N719-Chromophore/Titania Interface from Empirical-Potential Molecular-Dynamics Simulation, Solvated by a Room Temperature Ionic Liquid
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Vibrational Spectra of a N719-Chromophore/Titania Interface from Empirical-Potential Molecular-Dynamics Simulation, Solvated by a Room Temperature Ionic Liquid

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Synthesis of Ionic Liquid Based Electrolytes, Assembly of Li-ion Batteries, and Measurements of Performance at High Temperature
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Synthesis of Ionic Liquid Based Electrolytes, Assembly of Li-ion Batteries, and Measurements of Performance at High Temperature

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Last Updated: May 24, 2026

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Synthesis of Ionic Liquid Based Electrolytes, Assembly of Li-ion Batteries, and Measurements of Performance at High Temperature
11:04

Synthesis of Ionic Liquid Based Electrolytes, Assembly of Li-ion Batteries, and Measurements of Performance at High Temperature

Published on: December 20, 2016

Area of Science:

  • Materials Science
  • Physical Chemistry
  • Computational Chemistry

Background:

  • Ionic liquids (ILs) are salts that are liquid below 100°C, with tunable properties.
  • Understanding the molecular structure of IL surfaces is crucial for their application.

Purpose of the Study:

  • To investigate the molecular-level structure of ionic liquid surfaces.
  • To analyze the effects of various parameters on interfacial structure.

Main Methods:

  • Novel intrinsic analysis methods.
  • Bivariate orientation analysis.
  • Molecular dynamics simulations.

Main Results:

  • Pronounced layering observed at IL interfaces, alternating non-polar and ionic regions.
  • Outermost surface layer consists of alkyl chains, followed by a dense ionic layer.
  • Increased cation chain length enhances alkyl group coverage.
  • Larger anions disrupt the ionic layer, increasing cation orientational freedom.

Conclusions:

  • Molecular simulations are valuable for designing ionic liquids for specific applications.
  • Interfacial structure is sensitive to cation chain length and anion size.
  • Temperature has a minor effect, while the molecular model significantly influences orientational preferences.