Abstract
The retention behaviours of 26 alkylbenzenes on a laterally substituted liquid crystalline stationary phase and on conventional stationary phases in gas chromatography have been compared. Elution of alkylbenzenes in the nematic state of liquid crystalline substrates is dependent on the linearity and planarity of the probe molecules, whereas on conventional stationary phases they elute on the basis of their boiling points. The relative retention values (α) for close-boiling positional isomers on conventional stationary phases are near unity, but their separation can be achieved on liquid crystalline substrates. The variation of the relative retention value with respect to the chain length of the alkyl substituents is discussed.
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