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Related Concept Videos

Molecular and Ionic Solids02:54

Molecular and Ionic Solids

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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...
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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...
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Ionic Bonds00:42

Ionic Bonds

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Overview
When atoms gain or lose electrons to achieve a more stable electron configuration they form ions. Ionic bonds are electrostatic attractions between ions with opposite charges. Ionic compounds are rigid and brittle when solid and may dissociate into their constituent ions in water. Covalent compounds, by contrast, remain intact unless a chemical reaction breaks them.
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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...
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Solubility is the measure of the maximum amount of solute that can be dissolved in a given quantity of solvent at a given temperature and pressure. Solubility is usually measured in molarity (M) or moles per liter (mol/L). A compound is termed soluble if it dissolves in water.
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From Molecules to Materials: Engineering New Ionic Liquid Crystals Through Halogen Bonding
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Nanoconfined Ionic Liquids.

Shiguo Zhang1,2, Jiaheng Zhang3, Yan Zhang1

  • 1College of Materials Science and Engineering, Hunan University , Changsha 410082, China.

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|December 30, 2016
PubMed
Summary
This summary is machine-generated.

Confinement of ionic liquids (ILs) into nanoporous materials creates novel composites with unique properties. These nanoconfined ILs offer enhanced performance for applications in catalysis, energy storage, and separations.

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Area of Science:

  • Materials Science
  • Nanotechnology
  • Physical Chemistry

Background:

  • Ionic liquids (ILs) are versatile materials but often limited by their liquid state.
  • Confinement within nanoporous hosts offers a strategy to stabilize and modify IL properties.
  • Nanoconfined ILs combine IL characteristics with the functions of solid matrices.

Purpose of the Study:

  • To provide a comprehensive review of nanoconfined ionic liquids.
  • To document synthetic strategies and investigation methods for nanoconfined ILs.
  • To summarize the properties and applications of these advanced materials.

Main Methods:

  • Review of existing literature on ionic liquids and nanoconfinement.
  • Analysis of synthetic approaches for creating nanoconfined ILs.
  • Summary of characterization techniques for studying nanoconfined ILs.

Main Results:

  • Nanoconfinement significantly alters the physicochemical properties of ILs due to confinement effects and IL-wall interactions.
  • Diverse porous hosts can be utilized to create nanoconfined IL systems.
  • Distinct local structures and properties emerge in the confined space compared to bulk ILs.

Conclusions:

  • Nanoconfined ILs represent a promising class of materials with tunable properties.
  • Potential applications span catalysis, gas separation, energy storage (supercapacitors), ionogels, carbonization, and lubrication.
  • Further research is needed to fully exploit the potential of nanoconfined ILs.