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Related Concept Videos

Solubility of Ionic Compounds02:55

Solubility of Ionic Compounds

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.
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...
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Intralumenal Vesicles and Multivesicular Bodies

Intraluminal vesicles (ILVs) are small vesicles 50-80 nm in diameter formed during the maturation of early endosomes. A specialized endosome containing numerous ILVs is called a multivesicular body (MVB). ILVs contain internalized molecules such as antigens, nucleic acids, proteins, and metabolites. Some of these molecules are released from the MVBs inside exosomes and are transported to other cells. Other MVBs contain molecules that are retained in the ILVs and are later degraded within the...
Formation of Complex Ions03:45

Formation of Complex Ions

A type of Lewis acid-base chemistry involves the formation of a complex ion (or a coordination complex) comprising a central atom, typically a transition metal cation, surrounded by ions or molecules called ligands. These ligands can be neutral molecules like H2O or NH3, or ions such as CN− or OH−. Often, the ligands act as Lewis bases, donating a pair of electrons to the central atom. These types of Lewis acid-base reactions are examples of a broad subdiscipline called coordination...
Liquid–Solid Solutions01:29

Liquid–Solid Solutions

The process of a solid dissolving in a liquid to form a solution is governed by the solubility limit, which is the maximum amount of the solid substance, or solute, that can be dissolved in a specific volume of the liquid or solvent. As the solute dissolves, it reaches a point where no more solute can be dissolved at a given temperature - this is known as the saturation point. However, if further solute is added and it manages to dissolve, the solution becomes supersaturated. Supersaturated...
Ionic Bonds00:42

Ionic Bonds

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.
Opposing Charges Hold Ions Together in Ionic Compounds
Ionic bonds are reversible electrostatic interactions between ions...

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Development, Characterization, and Evaluation of CAGE-based Ionic Liquid Systems for Transdermal Delivery
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Development, Characterization, and Evaluation of CAGE-based Ionic Liquid Systems for Transdermal Delivery

Published on: September 26, 2025

Vesicles in ionic liquids.

Florence Gayet1, Jean-Daniel Marty, Annie Brûlet

  • 1Université de Toulouse, UPS, IMRCP, 118 route de Narbonne, F-31062 Toulouse Cedex 9, France.

Langmuir : the ACS Journal of Surfaces and Colloids
|July 2, 2011
PubMed
Summary
This summary is machine-generated.

Ionic liquids facilitate the formation of 1,2-dipalmitoyl-sn-glycero-3-phosphatidylcholine (DPPC) vesicles, with properties similar to those in water. Ionic liquid content significantly alters bilayer structure and stability, with ionic liquids preferring to integrate within the DPPC membrane.

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Area of Science:

  • Materials Science
  • Biophysics
  • Physical Chemistry

Background:

  • 1,2-dipalmitoyl-sn-glycero-3-phosphatidylcholine (DPPC) is a key phospholipid for biological membranes.
  • Ionic liquids (ILs) offer unique solvent properties for self-assembly studies.

Purpose of the Study:

  • Investigate DPPC vesicle formation in various room-temperature ionic liquids (RTILs).
  • Characterize the morphological and physical properties of DPPC vesicles in ILs.
  • Determine the influence of ILs on DPPC bilayer structure and stability.

Main Methods:

  • Staining transmission electron microscopy (TEM) for vesicle morphology.
  • Small-angle neutron scattering (SANS) for membrane thickness.
  • Differential scanning calorimetry (DSC) for phase transitions.
  • Analysis of various ILs and IL/water mixtures.

Main Results:

  • DPPC forms spherical vesicles (200-400 nm) in pure ILs.
  • Mean bilayer thickness in ILs (∼63 Å) is comparable to that in water.
  • ILs increase DPPC transition temperatures and enthalpies compared to water.
  • IL content significantly modifies bilayer structure and stability.
  • Ionic liquid molecules preferentially locate within the DPPC membrane.

Conclusions:

  • RTILs are effective media for DPPC vesicle formation.
  • DPPC vesicle properties in ILs are tunable by IL composition.
  • Ionic liquids can be incorporated into phospholipid bilayers, affecting their physical characteristics.