Solubilization of Hydrophobic Dye Orange OT with Morpholinium Surfactants Assisted by Choline Chloride and Urea

Supramolecular systems have been formed based on morpholinium surfactants and hydrotropic additives (choline chloride and urea). The aggregation thresholds of individual and mixed systems, as well as the ability to act as micellar nanocontainers, were evaluated using a complex of physicochemical methods. It was shown that the introduction of hydrotropic compounds insignificantly affects the values of the critical micelle concentration in the systems, but promotes an increase in the solubilization capacity of the morpholinium surfactant without a hydroxyethyl fragment in the head group by 1.5–2 times.