Abstract
Water solutions of starlike hexaanionic fullerene derivatives, C 60 [(CH 2 ) 4 SO 3 Na] 6 (star-ionomer) consisting of a C 60 cage covalently bonded with six ionic sulfonate arms, were studied using small-angle neutron scattering (SANS) and small-angle X-ray scattering (SAXS). Nearly monodisperse aggregates of the novel star-ionomers were observed in the solutions of concentrations from 4% down to 0.5%. The structure of the spherical-like aggregates bears high similarity in different concentrations studied. Information regarding the aggregation number, hydration number, size, and shape of the aggregates was obtained from a combined analysis of the SANS and SAXS data. © 1999 American Chemical Society.