Interaction of chlorobenzene with gelator in methyl-4,6- O-( p-nitrobenzylidene)-α- d-glucopyranoside gel probed by proton fast field cycling NMR relaxometry

Abstract

The solvent–gelator interactions in the gel composed of the low molecular mass gelator methyl-4,6- O-benzylidene- α- d-glucopyranoside with chlorobenzene is the subject of the studies. The interaction causes a significant slowing down of the motion of chlorobenzene molecules at the gelator surfaces when compared to bulk chlorobenzene. The motion manifests itself through the low frequency dispersion of the proton spin-lattice relaxation time of chlorobenzene in gel observed below 10 5 Hz. The relaxation time was measured with the Fast Field Cycling relaxometry method in the function of magnetic field strength and temperature. The data were interpreted in terms of two-fraction fast-exchange model.