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Related Concept Videos

Ion Exchange01:17

Ion Exchange

Ion exchange chromatography separates charged molecules from a solution by reversibly exchanging them with mobile, or 'active', ions associated with the oppositely charged stationary phase. This method can be used to separate ions, soften and deionize water, and purify solutions. The polymers comprising the ion-exchange column are high-molecular-weight and chemically stable polymers, crosslinked to be porous and essentially insoluble. They are also functionalized with either acidic or basic...
Molecular and Ionic Solids02:54

Molecular and Ionic Solids

Crystalline solids are divided into four types: molecular, ionic, metallic, and covalent network based on the type of constituent units and their interparticle interactions.
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...
Ion-Exchange Chromatography01:09

Ion-Exchange Chromatography

Ion-exchange chromatography, or IEC, is a technique for separating ions based on their affinity for the stationary phase. The stationary phase is a cross-linked polymer resin with covalently attached ionic functional groups. The functional groups can be either positively charged (cation exchangers) or negatively charged (anion exchangers). A cation exchanger consists of a polymeric anion and active cations, while an anion exchanger is a polymeric cation with active anions. The choice of...
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...
Ionic Association01:28

Ionic Association

The ionic association is the association of oppositely charged ions in an electrolyte solution to form ion pairs. Bjerrum defined ion pairs as two oppositely charged ions whose electrostatic attraction exceeds the thermal energy of the system, typically expressed as 2kT. Electrostatic attraction depends on ionic charge, separation distance, and the dielectric constant of the medium. Thermal energy, represented by kT, reflects the tendency of ions to move independently due to molecular motion.
Ionic Compounds: Formulas and Nomenclature03:34

Ionic Compounds: Formulas and Nomenclature

An element composed of atoms that readily lose electrons (a metal) can react with an element composed of atoms that readily gain electrons (a nonmetal) to produce ions through complete electron transfer. The compound formed by this transfer is stabilized by the electrostatic attractions (ionic bonds) between the oppositely charged ions.

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From Molecules to Materials: Engineering New Ionic Liquid Crystals Through Halogen Bonding
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From Molecules to Materials: Engineering New Ionic Liquid Crystals Through Halogen Bonding

Published on: March 24, 2018

Ionogels, ionic liquid based hybrid materials.

Jean Le Bideau1, Lydie Viau, André Vioux

  • 1Institut des Matériaux Jean Rouxel (IMN), Université de Nantes-CNRS, 2 rue de la Houssinière, BP 32229, F44322 Nantes, France. Jean.LeBideau@cnrs-imn.fr

Chemical Society Reviews
|December 25, 2010
PubMed
Summary

Ionogels immobilize ionic liquids (ILs) into solid materials, retaining IL properties for advanced applications like batteries and sensors. This overcomes challenges in using ILs in solid-state devices.

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Published on: January 23, 2018

Area of Science:

  • Materials Science
  • Electrochemistry
  • Chemical Engineering

Background:

  • Ionic liquids (ILs) offer unique properties like high conductivity and stability but are difficult to use in solid devices.
  • Immobilizing ILs is crucial for material applications, presenting a significant challenge in the field.

Purpose of the Study:

  • To present ionogels as a novel class of hybrid materials combining IL properties with solid matrices.
  • To explore the potential of ionogels for advanced applications, including solid electrolytes and separation membranes.

Main Methods:

  • Critical review of ionogel formation and properties.
  • Analysis of ILs as structuring media in ionogel synthesis.
  • Investigation of confinement effects on IL properties within ionogels.

Main Results:

  • Ionogels hybridize IL properties with organic, inorganic, or hybrid components.
  • ILs influence ionogel network formation, while confinement preserves IL dynamics.
  • Ionogels enable easy shaping and retain IL properties except outflow.

Conclusions:

  • Ionogels offer a promising route to solid electrolyte membranes for all-solid devices like batteries and fuel cells.
  • Ionogels facilitate IL implementation in separation techniques and functional materials.
  • Functionalized ionogels open new avenues for (bio)catalytic membranes, sensors, and drug delivery systems.