Surfactant Monolayers on Ternary Deep Eutectic Solvents
Deep eutectic solvents (DES) are mixtures of organic salts and hydrogen bond donors (HBD) that form strongly hydrogen-bonded room temperature liquids. DES comprising urea have been used for solvothermal synthesis of metal oxide nanoparticles, which opens the field of templating nanostructured materials using surfactant self-assembly in DES. Cationic and anionic surfactants show varying solubility in different choline chloride (ChCl) based DES depending on the HBD: SDS micellises in both ChCl:glycerol and ChCl:urea DES whereas CnTABs micellise in ChCl:glycerol but not in ChCl:urea. In order to facilitate both micellisation and solvothermal synthesis a ternary DES based on ChCl:urea:glycerol was developed which shows ellipsoidal micelles for SDS and CnTABs. We wish to probe molecular interaction of SDS and CTAB with the ChCl:urea:glycerol DES components using neutron reflectivity to understand the micelle stabilisation mechanisms. This will have implications in the preparation of nanostructured materials in DES, by providing information about the selective capping of surfactant micelles by DES components, therefore affecting the self-assembly process.
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Karen J Edler; Armando Maestro and I.Manasi. (2021). Surfactant Monolayers on Ternary Deep Eutectic Solvents. Institut Laue-Langevin (ILL) doi:10.5291/ILL-DATA.9-10-1684
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