Polarized-neutron scattering in aqueous solutions of fullerenols in a magnetic field

Autor: Yu. V. Kulvelis, V. T. Lebedev, A. A. Szhogina, V. V. Runov, V. P. Sedov
Rok vydání: 2014
Předmět:
Zdroj: Journal of Surface Investigation. X-ray, Synchrotron and Neutron Techniques. 8:1044-1054
ISSN: 1819-7094
1027-4510
Popis: 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.
Databáze: OpenAIRE
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