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

The aqueous solutions of mixtures ( T = 25°C) of paramagnetic Gd@C 82 (OH) x and diamagnetic C 82 (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...

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Published inSurface investigation, x-ray, synchrotron and neutron techniques Vol. 8; no. 5; pp. 1044 - 1054
Main Authors Lebedev, V. T., Kulvelis, Yu. V., Runov, V. V., Sedov, V. P., Szhogina, A. A.
Format Journal Article
LanguageEnglish
Published Moscow Pleiades Publishing 01.09.2014
Subjects
Chemistry and Materials Science
Materials Science
Surfaces and Interfaces
Thin Films
Fullerene
Neutron Technique
Aggregation Number
Surface Investigation
Correlation Radius
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Summary:The aqueous solutions of mixtures ( T = 25°C) of paramagnetic Gd@C 82 (OH) x and diamagnetic C 82 (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 × 10 4 with increasing fullerenol content ( C = 0.04−2.0 wt %). Such changes are coupled with both paramagnetic Gd@C 82 (OH) x molecules and interactions between the induced diamagnetic moments of fullerenols introduced into aggregates.
ISSN:1027-4510
1819-7094
DOI:10.1134/S1027451014050358