Due to their unique structural and physicochemical properties,dendrimers have been proposed as good candidates in potential biomedical applications.Investigations on the structure of dendrimer in aqueous solution are important.Small angle neutron scattering(SANS)is a powerful Due to their unique structural and physicochemical properties, dendrimers have been proposed as good candidates in potential biomedical applications. Investigations on the structure of dendrimer in aqueous solutions are important. Small angle neutron scattering (SANS) is a powerful