Electro optic Kerr effect studies of polar-polar binary liquid mixtures

Experimental results of electro optic Kerr coefficient in a number of polar-polar organic binary liquid mixtures belonging to aprotic-aprotic and aprotic-protic categories have been reported for various mole fractions. The interaction between the participating components in these mixtures has been established to be dipole-dipole in nature through dipole moment studies for the first time. The variations of dipole moment with mole fraction in these mixtures have been found to follow exactly the same trend of the Kerr coefficient. A similar trend is observed in the variation of the excess Kerr constant and excess refractive index for the same molar fractions. IR and NMR studies of these binary mixtures are performed to understand the molecular interactions between the participating components of the mixtures. © 1998 Elsevier Science B.V.