Deuterium NMR studies ofn-octyl-,n-nonyl-,n-decyl-D-glucopyranoside liquid crystalline systems

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Abstract
We report measurements of the deuterium NMR spectra of the lyotropic systems n-octyl-, n-nonyl- and n-decyl-β-D-glucopyranosides with D2O and C6D6. From these spectra the phase diagrams are constructed and include lamellar, hexagonal and isotropic (presumably cubic) phases. The details of the phase diagrams depend upon the sugar homologue and the solvent. The results can be understood qualitatively by considering some of the factors which determine the nature of the phases in these systems. The deuterium spectra belonging to the OD groups in the polar heads of n-octyl-α-D-glucopyranoside dissolved in C6H6 were measured and compared with analogous spectra, which were reported previously, of the same compound in D2O.