Refractive Indices and Molecular order in 4,4′Bis (Pentyloxy)azoxy Benzene in the Nematic State

Abstract

The n and ds. of 4,4'-bis(pentyloxy)azoxybenzene were measured in the cryst., nematic and isotropic phases. The orientational order parameters and polarizabilities in the mesophase were evaluated by Neugebauer's approach for several temps. and wavelengths. The order parameter at the same temp. for different wavelengths turns out to be same. The universal curve of the order parameter is given. [on SciFinder(R)