화학공학소재연구정보센터
Molecular Crystals and Liquid Crystals, Vol.543, 214-222, 2011
Density, Optical and Static Dielectric Studies of a Nematogenic Tolan Compound
We report here temperature variation of refractive indices, dielectric permittivities and densities of a nematogenic tolan compound (4-n-butyl-4'-ethoxytolan). The sample exhibits high birefringence. The refractive indices and density values have been analyzed to obtain the orientational order parameters. Experimental order parameters are compared with theoretical Maier-Saupe values. The variation of dielectric permittivities with temperature has been determined for the sample at frequency 1kHz. The sample shows very low dielectric anisotropy. The molecular dipole moment and the angle of inclination of the molecular dipole moment with the director are also calculated.