Amphiphilic N-benzoyl-1-amino-1-deoxy-D-glucitol derivatives forming thermotropic lamellar, columnar and different types of cubic mesophases

Thermotropic behavior of asymmetric chain length catanionic surfactants: The influence of the polar head group

“…Their rich thermotropic mesomorphism is thus comparable to that of other amphiphilic mesogens such as, inter alia, lipids [23][24][25][26][27][28][29][30][31][32][33] and metal soaps [34,35]. For the compounds studied in this work, there is a general tendency for the fusion process to follow this order: crystalline solid-soft crystal-SmB-SmA-liquid.…”

T‐Shaped Ionic Liquid Crystals Based on the Imidazolium Motif: Exploring Substitution of the C‐2 Imidazolium Carbon Atom

“…[56] In the past, a SmA-Cub-Col h phase sequence in a homologous series has often been observed for non-ionic, amphiphilic compounds, and microsegregation has been shown to play a crucial role in the mesomorphism. [57][58][59][60] Analogies to lyotropic systems have already been drawn in these earlier investigations. [61,62] Powder XRD: The enantiotropic mesophases were investigated by powder XRD to obtain more information about the molecular packing in these phases.…”

Thermotropic phase behavior of triple-chained catanionic surfactants with varying headgroup chemistry

“…Besides the lyotropic behavior, catanionics also display fairly interesting thermotropic behavior, exhibiting a stepwise melting from the solid crystalline to the liquid phase [8,[23][24][25]. The formation of thermotropic liquid crystalline (lc) phases by certain classes of amphiphiles has been known and studied for some time, in particular for lipids [26][27][28][29][30][31][32][33][34] and metallic soaps [35,36]. Both the lyotropic and thermotropic behavior of amphiphiles are directly connected to molecular chemistry and geometric shape [31,37,38].…”