Poly-thermal solubility and complex thermal analysis of water-soluble tris-malonate of light fullerene – C60[=C(COOH)2]3
Abstract
The poly-thermal solubility of the tris-malonate C60[=C(COOH)2]3 – H2O binary system was investigated from 20 – 80 ◦C with the help of the method of isotherm saturation in ampoules. Concentration of tris-malonate C60[=C(COOH)2]3 in solutions was determined by light absorption at 330 nm. A diagram of the solubility is non-monotonic, consisting of 2 branches, which correspond to 2 different crystal-hydrates of C60[=C(COOH)2]3 and one non-variant point, corresponding to the saturation both crystal-hydrates. Complex thermal analysis of C60[=C(COOH)2]3 crystal hydrates, in equilibrium with a saturated aqueous solution at room temperature, was performed from 20 – 600 ◦C. Consecutive effects of the losses of C=O and C=O + H2O were determined.
Supporting agencies: Research was performed using equipment of the Resource Center ‘GeoModel’ of SaintPetersburg State University.
About the Authors
K. N. Semenov
St. Petersburg State University
Russian Federation
Russian Federation
Saint-Petersburg
N. A. Charykov
St. Petersburg State Technological Institute (Technical University); St. Petersburg State Electro-Technical University (LETI)
Russian Federation
Russian Federation
Saint-Petersburg
A. S. Kritchenkov
St. Petersburg State University
Russian Federation
Russian Federation
Saint-Petersburg
I. A. Cherepkova
St. Petersburg State Technological Institute (Technical University)
Russian Federation
Russian Federation
Saint-Petersburg
O. S. Manyakina
St. Petersburg State Technological Institute (Technical University)
Russian Federation
Russian Federation
Saint-Petersburg
D. P. Tyurin
St. Petersburg State Technological Institute (Technical University)
Russian Federation
Russian Federation
Saint-Petersburg
A. A. Shestopalova
St. Petersburg State Technological Institute (Technical University)
Russian Federation
Russian Federation
Saint-Petersburg
V. A. Keskinov
St. Petersburg State Technological Institute (Technical University)
Russian Federation
Russian Federation
Saint-Petersburg
K. V. Ivanova
St. Petersburg State Technological Institute (Technical University)
Russian Federation
Russian Federation
Saint-Petersburg
N. M. Ivanova
St. Petersburg State University
Russian Federation
Russian Federation
Saint-Petersburg
D. G. Letenko
St. Petersburg State University Architecture Academy
Russian Federation
Russian Federation
Saint-Petersburg
V. A. Nikitin
St. Petersburg State Technical University
Russian Federation
Russian Federation
Saint-Petersburg
E. L. Fokina
St. Petersburg State University
Russian Federation
Russian Federation
Saint-Petersburg
I. A. Pestov
St. Petersburg State Technological Institute (Technical University)
Russian Federation
Russian Federation
Saint-Petersburg
A. O. Netrusov
St. Petersburg State Technological Institute (Technical University)
Russian Federation
Russian Federation
Saint-Petersburg
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Review
For citations:
Semenov K.N., Charykov N.A., Kritchenkov A.S., Cherepkova I.A., Manyakina O.S., Tyurin D.P., Shestopalova A.A., Keskinov V.A., Ivanova K.V., Ivanova N.M., Letenko D.G., Nikitin V.A., Fokina E.L., Pestov I.A., Netrusov A.O. Poly-thermal solubility and complex thermal analysis of water-soluble tris-malonate of light fullerene – C60[=C(COOH)2]3. Nanosystems: Physics, Chemistry, Mathematics. 2014;5(3):435-440.
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