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Related Concept Videos

Solubility03:00

Solubility

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Solution, Solubility, and Solubility Equilibrium
A solution is a homogeneous mixture composed of a solvent, the major component, and a solute, the minor component. The physical state of a solution—solid, liquid, or gas—is typically the same as that of the solvent. Solute concentrations are often described with qualitative terms such as dilute (of relatively low concentration) and concentrated (of relatively high concentration).
In a solution, the solute particles (molecules,...
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Entropy and Solvation02:05

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The process of surrounding a solute with solvent is called solvation. It involves evenly distributing the solute within the solvent. The rule of thumb for determining a solvent for a given compound is that like dissolves like. A good solvent has molecular characteristics similar to those of the compound to be dissolved. For example, polar solutions dissolve polar solutes, and apolar solvents dissolve apolar solutes. A polar solvent is a solvent that has a high dielectric constant (ϵ...
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Preparation of Binary and Ternary Deep Eutectic Systems
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Nanostructure in Amphiphile-Based Deep Eutectic Solvents.

Iva Manasi1, Ralf Schweins2, Kun Ma3

  • 1Department of Chemistry, University of Bath, Claverton Down, Bath BA2 7AX, U.K.

Langmuir : the ACS Journal of Surfaces and Colloids
|November 15, 2023
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Summary
This summary is machine-generated.

Deep eutectic solvents (DESs) self-assemble into nanostructures. These structures swell and solvate when interacting with water and dodecane, showing potential for templating applications.

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Area of Science:

  • Supramolecular Chemistry
  • Materials Science
  • Physical Chemistry

Background:

  • Deep eutectic solvents (DESs) are emerging
  • green
  • solvents with unique properties.
  • Amphiphilic sulfobetaines combined with camphor sulfonic acid form DESs with potential nanostructuring.
  • Understanding DES nanostructure and solvation behavior is crucial for their applications.

Purpose of the Study:

  • Investigate the native nanostructure of DESs formed by C12-C18 alkyl chain sulfobetaines and camphor sulfonic acid.
  • Determine how these DESs interact with polar (water) and nonpolar (dodecane) species.
  • Elucidate the structural changes and solvation mechanisms upon additive interaction.

Main Methods:

  • Small-angle neutron scattering (SANS) was employed to study the DES nanostructure.
  • Contrast variation techniques were used to differentiate solvent components and additives.
  • Analysis focused on structural changes and peak position shifts with varying additive concentrations.

Main Results:

  • The neat DES exhibits self-assembled sulfobetaine structures, increasing in size with longer alkyl chains.
  • Water and dodecane interact with the hydrophilic and hydrophobic parts of the DES, respectively.
  • Both additives cause swelling and solvation of the DES structure, with effects dependent on concentration.

Conclusions:

  • The study resolves the nanostructure of sulfobetaine-based DESs and their interaction with polar/nonpolar species.
  • Observed solvation and swelling behaviors indicate potential for templating applications in material synthesis.
  • Findings advance the understanding of DES behavior for designing advanced materials.