Light-scattering studies of molecular association in mesogenic systems

Abstract

Results are reported of depolarized light scattering measurements on solutions of S-(+)-4-(2′-methylbutyl)-phenyl-4′-octylbiphenyl-4-carboxylate (CE8) and (±)-4-(2′-methylbutyl)phenyl-4′-octylbiphenyl-4-carboxylate (CE8R) in p-xylene and solutions of biphenyl in carbon tetrachloride. Values of the quadrupole correlation factor g₂ are derived and the results are interpreted in terms of progressive molecular association. No differences were detected between g₂ values for CE8 and CE8R. The scattering results are used to determine absolute values for the polarizability anisotropies of CE8 and CE8R.