ملخص: In this work thermodynamic and surface properties of two liquid crystals substituted with polyethylene oxyde (POE) chains are considered. The first of them is N,N'diphenyl-[4 -(2,3,4-tri(2-(2-metoxyethoxy) ethoxy) benzylidene)imine] piperidine (LC1) and the second is 2hydroxy-3-methyl-4-[4-(2-(2-butoxyethoxy)ethoxy)]-4'-[4-(2-butoxyethoxy)ethoxy)styryl] azobenzene (LC2). The POE chains increase the polarity and induce an amphiphilic character of these compounds. The inverse gas chromatography was used to determine excess functions of selected solutes infinitely diluted in the liquid or nematic LC1 and LC2. The formation of multilayers by LC1 and LC2 at the air/saturated aqueous NaCl interface was observed using the Langmuir balance technique. Results obtained show that the hydrophilic character of the compounds may play an important role in the mechanism of the molecular recognition during chromatographic separations.

لغة: إنجليزية