G. W. Gray, D. Lacey
Oct 1, 1983
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0
Influential Citations
7
Citations
Journal
Molecular Crystals and Liquid Crystals
Abstract
Abstract Five (ethyl to n-hexyl) of each of the series of 2-n-alkyl-6-(4′-cyanophenyl)-naphthalenes and -3,4-dihydronaphthalenes, and three (ethyl, n-butyl, and n-hexyl) of the corresponding series of -1,2,3,4-tetrahydronaphthalenes were prepared. All these compounds exhibit nematic phases (no smectic phases were found) and the nematic-isotropic transition temperatures of these compounds are compared with those of the corresponding 4- n-alkyl-4′-cyano biphenyls and 4- n-alkyl-4”-cyano- p-terphenyls. Some explanation is given for the observed nematic thermal stabilities of the titled compounds. Assessments of the viscosities of the titled compounds have been carried out, and the effects on viscosity of substituting 2- n-pentyl-6-(4′-cyanophenyl) naphthalene for 4- n-pentyl-4”-cyano- p-terphenyl in commercially available mixtures have also been investigated.