Preparationand Thermodynamic Behaviourof New Nematic Sulphur-Containing Liquid Crystal

In the last few years, liquid crystalswere used as stationary phases in gas chromatography for the separation of close-boiling isomers.In this paper new nematic liquid crystalbased on Schiff basewasprepared by the condensation between amino group of 4-(5-(ethylthio)-1,3,4-oxadiazole-2- yl)aniline and the aldehyde group of para-methoxybenzaldehyde. In summary, a facile and high yielding synthesis of liquid crystal (6) has been developed. Utilization of the liquid crystal as stationary phase in gas chromatography, results confirmed that this liquid crystal has the ability to separate many of close-boiling and geometrical isomers, such as benzene derivatives, ionone and decaline, through the nematic phase. This work forms the basis of the design of new liquid crystals stationary phases for analytical purposes and related applications.