Density, Optical and Static Dielectric Studies of a Nematogenic Tolan Compound

Abstract

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 1 kHz. The sample shows very low dielectric anisotropy. The molecular dipole moment and the angle of inclination β of the molecular dipole moment with the director are also calculated.