Abstract
The synthesis is described of four nematic liquid-crystalline stationary phases belonging to the azo and azoxy compound group. The stationary phases obtained were deposited in different amounts on Chromosorb W NAW, which was placed in glass columns (2.1 m x 4 mm I.D.). The temperature dependences of the retention parameters and separation ratios were determined for the particular columns. In addition, the efficiencies of the columns were calculated and separation tests were performed for various mixtures. The results obtained were correlated with the molecular structures of the stationary phases. It was found that azoxy compounds had better separating properties than azo compounds, and liquid crystals with a methyl group were better than those with a cyano group.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
