Heat capacities of aqueous solutions of amino acid and dipeptide derivatives of fullerene |
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| Authors: | A. N. Danilenko V. S. Romanova E. F. Kuleshova Z. N. Parnes E. E. Braudo |
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| Affiliation: | (1) N. M. Emanuel' Institute of Biochemical Physics, Russian Academy of Sciences, 4 ul. Kosygina, 117977 Moscow, Russian Federation;(2) A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, 28 ul. Vavilova, 117813 Moscow, Russian Federation |
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| Abstract: | ![]()
The concentration dependences of heat capacities of aqueous solutions of several amino acid and peptide derivatives of fullerene were measured by scanning differential calorimetry at 298 K. The heat capacities for the arginine, alanylalanine, and glycylvaline derivatives dissolved in water depend slightly on concentration. The concentration dependences of the heat capacities of aqueous solutions of the serine and alanine derivatives display extrema. The calculated contributions of hydration to the heat capacities of the dissolved fullerene derivatives have both positive and negative signs. Translated fromIzvestiya Akademii Nauk. Seriya Khimicheskaya, No. 11, pp. 2202–2204, November, 1998. |
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| Keywords: | fullerene derivatives amino acid dipeptide heat capacity scanning differential calorimetry |
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