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The physical gelation of 3,4,5-trialkoxy-N-( 1-deoxysorbitol-1-y1)benzamides and 3,4,5-trialkoxy-N-(2-deoxyglucos-2-yl)benzamides in organic solvents and monomeric methacrylates at ambient temperature is reported. UV polymerization of the methacrylate solvent yielded interpenetrating networks of the crosslinked polymethacrylate and the aggregated solute. The embedded gels exhibit two different morphologies depending on the solvent. Either whitehubid gels containing a percolating network of globular aggregates (@ = 1 -10 pm) or clear, transparent gels consisting of rod-like crystals (0 = 4-100 nm) were found. The sphere morphology consists of small rod-shaped crystallites assembled to spherical objects and is assumed to be caused by a liquid-liquid demixing process prior to gelation.

SUMMARY The physical gelation of 3,4,5-trialkoxy-N-( 1-deoxysorbitol-1-y1)benzamides and 3,4,5-trialkoxy-N-(2-deoxyglucos-2-yl)benzamides in organic solvents and monomeric methacrylates at ambient temperature is reported. UV polymerization of the methacrylate solvent yielded interpenetrating networks of the crosslinked polymethacrylate and the aggregated solute. The embedded gels exhibit two different morphologies depending on the solvent. Either whitehubid gels containing a percolating network of globular aggregates (@ = 1 -10 pm) or clear, transparent gels consisting of rod-like crystals (0 = 4-100 nm) were found. The sphere morphology consists of small rod-shaped crystallites assembled to spherical objects and is assumed to be caused by a liquid-liquid demixing process prior to gelation.

Porous membranes consisting of poly[2-ethyl-hexyl methacrylate-co-2-diethylaminoethyl methacrylate-cross-1,4-butane diol dimethacrylate] have been prepared by means of the ''gel template leaching'' strategy. Well-defined cylindrical pores with diameters of 6-15 nm have been obtained on applying N-(2-desoxy-sorbityl)-3 0 , 4 0 ,5 0 -tris(dodecyloxy)benzamide as organogelator. Chemical modification of the pores' inner walls with methyl iodide to introduce tetra alkyl ammonium surface groups yielded functional membranes with cationic charged pores. The membranes exhibited anion:cation selectivities depending on the electrolyte concentration. At an ion strength of 1 mM the anion:cation selectivity exceeded values of 100.