Multiple morphologies of molecular assemblies of polystyrene-b-poly[2-(beta-D-glucopyranosyloxy)ethyl acrylate] (PSt-b-PGEA) were obtained by initially dissolving it in DMF and then adding water to the organic solution. With increasing the initial copolymer concentration (ICC) from 0.1 wt% to 2.0 wt% in DMF, the molecular assemblies of PSt(77)-b-PGEA(6) were transformed from spheres, to rods, to vesicles, to tubules, and again to vesicles. Concanavalin (Con A) was used to characterize the surface properties of the resulting aggregates.