Abstract
A series of protic ionic salts were synthesised by a simple acid–base reaction from various pyridine derivatives and dodecylbenzenesulfonic acid in a common organic solvent and characterised in terms of their thermal and lyotropic liquid crystalline properties using various experimental techniques. All of them exhibited lyotropic liquid crystalline phases in toluene, methanol, acetonitrile, dimethyl sulfoxide and water. Their critical concentrations for the formation of biphasic solutions and concentrations for the formation of lyotropic solutions were quite broad depending on the dielectric constants of the solvents. Their lyotropic phases were identified as lamellar phases, since their textures exhibited bâtonnets, oily streaks and mosaic textures. They can potentially be used for many organic transformations, which may have implications in green chemistry.
Acknowledgements
P.K.B. acknowledges the University of Nevada Las Vegas for start‐up, Stimulation, Implementation, Transition and Enhancement (SITE), New Investigation Award (NIA), Planning Initiative Award (PIA), and Applied Research Initiative (ARI) grants, and the donors of the Petroleum Research Fund, administered by the American Chemical Society, and an award from Research Corporation for the support of this research. A.K.N. acknowledges the Graduate College (UNLV) for providing him a Nevada Stars Graduate Research Assistantship for this project.