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CPP: Fachverband Chemische Physik und Polymerphysik

CPP 30: Complex Fluids, Colloids, Micelles and Vesicles I

CPP 30.1: Hauptvortrag

Dienstag, 10. März 2026, 14:00–14:30, ZEU/0260

Solvent effects on amphiphile self-assembly in Deep Eutectic Solvents — •Karen Edler — Centre for Analysis and Synthesis, Chemistry Department, Lund University, Sweden

Deep eutectic solvents (DES) are mixtures of hydrogen bond donors and acceptors that form strongly hydrogen-bonded room temperature liquids. These mixtures are straightforward to prepare, using cheap, bioderived components, with lower volatility than most organic solvents, so are potential new green solvents for applications from drug delivery to battery electrolytes. We are interested in micelle templating of inorganic nanomaterials and formulations for delivery of actives, using these versatile solvents.

Changing the H-bonding components and their ratios alters the physicochemical properties of DES, leading to changes in solubility of other species in these solvents. This also alters the self-organisation of surfactants in these mixtures. We have investigated how specific DES components and their molar ratios impact upon solubility and structuring in surfactant solutions, using small angle X-ray and neutron scattering and rheology. Factors such as polarity, the presence of water, and the intermolecular interactions, both between solvent components and with the surfactant headgroups, play a role in the size and morphology of the micelles formed. We aim to develop design rules for novel complex solutions with applications in templating, rheology control and encapsulation using these interesting new solvent systems.

Keywords: micelles; amphiphiles; self-assembly; non-aqueous solvents; deep eutectic solvents