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Gas chromatographic study of the thermal and analytical properties of a nematic luquid crystal and its cupric complex

✍ Scribed by Berdagué, P. ;Perez, F. ;Courtieu, J. ;Bayle, J. P. ;Abdelhadi, O. ;Guermouche, S. ;Guermouche, M. H.

Publisher
John Wiley and Sons
Year
1995
Tongue
English
Weight
348 KB
Volume
18
Category
Article
ISSN
0935-6304

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✦ Synopsis

The nematic compound N-4-(2'-(4"-dodecyloxybenzoyloxy)-4'-dodecyloxy)azobenzenyl-4-dodecyloxysalicylidenciminc, known as LH, and its cupric complex, bis[N-4-(2'-(4"-dodecyloxybenzoyloxy)-4'-dodecyloxy)azobenzenyl-4-dodecylo~salicylidene]~inato of copper(II), known as CuLz, have been used as stationary phases for gas chromatography. The thermal properties of LH and CuLz have been determined with conventional metal columns, using n-alkanes as solute probes. Plots of In v"g against UT clearly show the temperature transitions of LH and CuLz. The analytical capabilities of the two stationary phases were established by use of 25 m glass capillary columns. Satisfactory separations were obtained for positional hydrocarbon and halocarbon isomers, aromatic and polyaromatic compounds, and volatile essential oil constituents.

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