84219-03-4Relevant articles and documents
Liquid crystalline compounds based on 1,4-disubstituted but-1-YNE
Dabrowski,Dziaduszek,Szczucinski,Parka
, p. 201 - 215 (2007/10/02)
Liquid crystalline compounds containing the -CH2CH2-C ≡ C- inter-ring linkage between cyclohexane and benzene rings belonging to four homologous series have been prepared. Their mesogenic, viscous, dielectric, optical, and dielectrooptical properties were investigated and compared with the properties of analogous compounds with the -CH2CH2- or -C ≡ C- bridge groups. The mesogenic and physical properties of the compounds with the -CH2CH2-C ≡ C- linkage group are intermediate between properties of the compounds with -C ≡ C- and the properties of the compounds with -CH2CH2- group, except that their clearing points are lower and viscosity is higher.
SYNTHESIS AND SOME PHYSICAL PROPERTIES OF 1-CYCLOHEXYL-2-(4 double prime -HALOBIPHENYL-4 prime -yl)ETHANES.
Takatsu,Takeuchi,Sato
, p. 345 - 355 (2007/10/02)
A series of 1-(trans-4 prime -n-alkylcyclohexyl)-2-(4 double prime -halobiphenyl-4 prime -yl)ethanes, which show nematic phases, was prepared. Their transition temperatures, enthalpies and entropies were measured. Their bulk viscosities, birefringences and dielectric constants were determined by extrapolation. The bulk viscosity as a function of the third power of the van der Waals radius of the halogeno group, the birefringence as a function of the van der Waals radius of the halogeno group, and the dielectric constants as a function of the dipole moment of the halogeno group are discussed for the 1-(trans-4 prime -n-propylcyclohexyl)-2-(4 double prime -halobiphenyl-4 prime -yl)ethanes.
