Analytical Study of Three Liquid Crystals Used as Stationary Phases in Gas Chromatography
Asian Journal of Chemistry,
Vol. 19 No. 3 (2007): Vol 19 Issue 3
Abstract
The investigation of the analytical properties of three liquid
crystals 5-(4-methoxyphenyl)-azophenyl)-2-butylthio-1,3,4-
oxadiazole (phase I), 5-(4-(carboxymethylphenyl)-azophenyl)-
2-butyl-thio-1,3,4-oxadiazole (phase II) and 5-(4-
(propoxyphenyl)-azophenyl)-2-butyl thio-1,3,4-oxadiazole
(phase III) was carried out by gas chromatography using glass
capillary columns. For this purpose, 79 solutes belonging to
various families were injected. Among these compounds which
have different polarities and volatilities, we studied the retention
of 16 alkylbenzenes, 7 polar substituted benzenes, 24 polar
and non-polar phenols, 12 substituted naphthalenes and 20
constituents of natural products. Comparison of the retention
data of the studied components has shown that phase II allowed
a better separation than the other phases. The three liquid
crystalline materials show a good separation of the studied
isomers except for xylene.
crystals 5-(4-methoxyphenyl)-azophenyl)-2-butylthio-1,3,4-
oxadiazole (phase I), 5-(4-(carboxymethylphenyl)-azophenyl)-
2-butyl-thio-1,3,4-oxadiazole (phase II) and 5-(4-
(propoxyphenyl)-azophenyl)-2-butyl thio-1,3,4-oxadiazole
(phase III) was carried out by gas chromatography using glass
capillary columns. For this purpose, 79 solutes belonging to
various families were injected. Among these compounds which
have different polarities and volatilities, we studied the retention
of 16 alkylbenzenes, 7 polar substituted benzenes, 24 polar
and non-polar phenols, 12 substituted naphthalenes and 20
constituents of natural products. Comparison of the retention
data of the studied components has shown that phase II allowed
a better separation than the other phases. The three liquid
crystalline materials show a good separation of the studied
isomers except for xylene.
Keywords
op Gas chromatography
Stationary phase
Liquid crystals.
BENALIA*, M., BADJAH-HADJ-AHMED†, A., DJEDID, M., MEKLATI†, B., & AL-DUJAILI‡, A. (2010). Analytical Study of Three Liquid Crystals Used as Stationary Phases in Gas Chromatography. Asian Journal of Chemistry, 19(3), 1761–1771. Retrieved from https://asianpubs.org/index.php/ajchem/article/view/13739
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