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Preparation of Binary and Ternary Deep Eutectic Systems
Published on: October 31, 2019
Shape, Size, and Internal Dynamics of Loosely Bound Colloidlike Ionic Clusters in Ternary Solvent Systems
Jana Eisermann1, Anna Franziska Roth1, Dariush Hinderberger1
1Institute of Chemistry , Martin-Luther-Universität Halle-Wittenberg , 06120 Halle (Saale) , Germany.
Preferential solvation influences the formation of dynamic ionic clusters called ionoids. Solvent properties like viscosity and permittivity control the size and shape of these self-assembled structures.
Area of Science:
- Supramolecular Chemistry
- Materials Science
- Solution Chemistry
Background:
- Dynamic self-assembly of ionic clusters (ionoids) is crucial for materials science.
- Understanding preferential solvation effects is key to controlling ionoid formation.
- Macrocyclic hosts offer unique platforms for studying self-assembly.
Purpose of the Study:
- To investigate how preferential solvation impacts the dynamic self-assembly of ionoids.
- To characterize the changes in ionoid size and shape upon solvent substitution.
- To correlate solvent properties with the structure and stability of ionic clusters.
Main Methods:
- Dynamic light scattering (DLS) for size and shape analysis.
- Substitution of solvents in a ternary mixture (DMSO/glycerol/water).
- Continuous wave (CW) electron paramagnetic resonance (EPR) spectroscopy for solvation state analysis.
Main Results:
- Solvent substitution significantly altered the size and shape of ionic clusters.
- Dynamic viscosity and relative permittivity correlated with ionoid morphology.
- EPR spectroscopy provided insights into the solvation of dianionic building units.
Conclusions:
- Preferential solvation is a critical factor in directing the self-assembly of ionoids.
- Tailoring solvent composition allows for control over ionoid structure.
- This study highlights the importance of solvent properties in supramolecular assembly.
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