Sans and Saxs Study on Aqueous Mixtures of Fullerene-Based Star Ionomers and Sodium Dodecyl Sulfate.
Sans and Saxs Study on Aqueous Mixtures of
Fullerene-Based Star Ionomers and Sodium Dodecyl
Jeng, U.; Liua, W. J.; Lin, T. L.; Tsao, C. S.;
Cantennwala, T.; Chiang, L. Y.; Sung, L. P.; Han, C. C.
Physica A: A Statistical Mechanics and Its Application,
Vol. 304, 191-201, 2002.
aqueous mixtures; ionomers; sodium dodecyl sulfate;
fullerene-based ionomers; aggregation structure
Fullerene-based star ionomer
C60[CO(CH2)5O(CH2)4SO3Na]6(FC10S), with six
sodium-dodecyl-sulfate-like arms randomly bonded on the
fullerene, has been synthesized. This novel molecule has
a high water solubility and a structural shape
resembling the skeleton of a micelle of sodium dodecyl
sulfate (SDS). We study aqueous mixtures of the
C60-based ionomers and SDS using small angle neutron
scattering (SANS) and small angle X-ray scattering
(SAXS). With a selected deuteration of SDS, we have
identified the formation of complex aggregates of FC10S
with SDS in the mixtures. The structural information of
the complex aggregates is extracted from the SANS and
SAXS data measured for the mixtures. On the average, the
complex aggregates observed have a cylinder-like shape
with a radius of 19 and a length of 100 for the sample
mixtures containing 2.3 or 1.2mM of FC10S and 6mM of
SDS. The mean aggregation numbers of FC10S and SDS in
each complex aggregate are 15 and 11, respectively.