Cryometry and excess functions of fullerenols and trismalonates of light fullerenes – C60(OH)24±2 and C70[=C(COOH)2]3 aqueous solutions
https://doi.org/10.17586/2220-8054-2015-6-5-704-714
Abstract
Cryometry investigations of the C60(OH)24±2 – H2O and C70[=C(COOH)2]3 – H2O binary systems were conducted over the 0.1 – 10 g concentration range of fullerenols per 1 dm3 of solutions. The decreases of the temperatures at the onset of H2O – ice crystallization were determined. Excess functions of aqueous solutions – water and fullerenols (trismalonates) activities and activity coefficients and excess Gibbs energy of the solutions were calculated. All solutions demonstrated huge deviations from those of ideal solutions. The last fact, to our opinion, is caused by a very specific – hierarchical type of association of fullerenols (trismalonates) solution components, which was proved by the results of visible light scattering analysis.
Supporting agencies: Investigations were supported by Russian Foundation for Basic Research – RFBR (Project No. 15-08-08438) and with the help of the equipment of Resource Center ‘Geomodel’ (St.-Petersburg State University)
About the Authors
M. Yu. Matuzenko
St. Petersburg State Technological Institute (Technical University)
Russian Federation
Russian Federation
St. Petersburg
D. P. Tyurin
St. Petersburg State Technological Institute (Technical University)
Russian Federation
Russian Federation
St. Petersburg
O. S. Manyakina
St. Petersburg State Technological Institute (Technical University)
Russian Federation
Russian Federation
St. Petersburg
K. N. Semenov
St. Petersburg State University
Russian Federation
Russian Federation
St. Petersburg
N. A. Charykov
St. Petersburg State Electro-technical University (LETI); St. Petersburg State Technological Institute (Technical University)
Russian Federation
Russian Federation
St. Petersburg
K. V. Ivanova
St. Petersburg State University
Russian Federation
Russian Federation
St. Petersburg
V. A. Keskinov
St. Petersburg State Technological Institute (Technical University)
Russian Federation
Russian Federation
St. Petersburg
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Review
For citations:
Matuzenko M.Yu., Tyurin D.P., Manyakina O.S., Semenov K.N., Charykov N.A., Ivanova K.V., Keskinov V.A. Cryometry and excess functions of fullerenols and trismalonates of light fullerenes – C60(OH)24±2 and C70[=C(COOH)2]3 aqueous solutions. Nanosystems: Physics, Chemistry, Mathematics. 2015;6(5):704-714. https://doi.org/10.17586/2220-8054-2015-6-5-704-714
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