Polarized-Neutron Scattering in Aqueous Solutions of Fullerenols in a Magnetic Field
Authors:
V. T. Lebedev, Yu. V. Kulvelis, V. V. Runov, V. P. Sedov, and A. A. Szhogina
Authors from CMD:
The year of the publication:
2014
Journal:
Journal of Surface Investigation. X-ray, Synchrotron and Neutron Techniques
N 5
vol. 8
1044–1054
Keywords:
Fullerene, Aggregation Number, Correlation Radius
Abstract:
The aqueous solutions of mixtures (T = 25°C) of paramagnetic Gd@C82(OH) x and diamagnetic C82(OH) x fullerenols, where x ∼ 30, are studied via small-angle polarized-neutron scattering under the conditions of transition from diluted to concentrated systems whose solubility threshold is close to that of fullerenols. When the induction B of an external field varies from 0.001 to 1.0 T, the molecular correlation radius of solutions is R C ∼ 15–20 nm and the aggregation number reaches ∼5 × 104 with increasing fullerenol content (C = 0.04−2.0 wt %). Such changes are coupled with both paramagnetic Gd@C82(OH) x molecules and interactions between the induced diamagnetic moments of fullerenols introduced into aggregates.