Vesicles prepared with the complex salts dioctadecyldimethylammonium polyacrylates

► Vesicles of the complex salts dioctadecyldimethylammonium polyacrylates were prepared and characterized. ► Properties of these vesicles do not differ much from those with monomeric counterions. ► Multilamellar vesicles are favored by the presence of the polymeric counterion. ► This methodology can be used to prepare vesicles with controlled composition containing polymeric counterions.