Self-Diffusion and Molecular Order in Lyotropic Liquid Crystals

Abstract

The translational self-diffusion coefficients of the ${\mathrm{H}}_{2}$O molecules in the water channels of both hexagonal and lamellar lyotropic liquid crystals have been measured by the variable field-gradient proton spin-echo method, and the temperature dependence of the ordering of ${\mathrm{D}}_{2}$O and ${\mathrm{H}}_{2}$O molecules was studied by quadrupole perturbed deuteron NMR and proton spin-lattice relaxation measurements.