Lyotropic Mesophases with "Normal" and "Reversed" Two-dimensional Hexagonal Structure.

Identification of Lyotropic Liquid Crystalline Mesophases

On the Swelling of Bicontinuous Lyotropic Mesophases

The swelling of sponge-like bicontinuous mesophases of bilayers of surfactant (or lipid) in water as a function of dilution is analyzed. Analytic formulae for the swelling are derived assuming ii) constant aggregate thickness and (it) fixed surface area per surfactant molecule at an imaginary surface located within the bilayer. Approximate swelling laws are derived for bicontinuous films and co...

Lyotropic mesophases as defects in binary mixtures

2014 The classification of defects in ordered media is applied to the case of binary mixtures. Stable defects must be surfaces, and, in that case, interfaces. For lyotropic systems, a negative surface energy leads to a maximization of the interface area. One thus obtains, with increasing surfactant concentration, micelles, and then liquid crystal phases which must be considered as ordered defec...

Investigating reversed liquid crystalline mesophases

Reversed liquid crystalline mesophases, such as the reversed bicontinuous cubic, reversed hexagonal or reversed micellar cubic phase, are nowadays widely studied due to their potential applications in, for instance, the controlled delivery of functional molecules. In order to design the adequate mesophase delivery system for a specific application, the crystallographic structure of the phase ha...

Conducting polymer nanofibers with controlled diameters synthesized in hexagonal mesophases

Oil-swollen hexagonal mesophases resulting from the surfactant mediated self-assembly of a quaternary mixture of water, surfactant, co-surfactant, and oil, are versatile templates to synthesize anisotropic nanomaterials. Poly(diphenylbutadyine) (PDPB) polymer nanofibrous network structures were produced in the oil tubes of the mesophases by photo-induced radical polymerization using a chemical ...