Solubility, Thermal Analysis, and Association of the bis-Adducts of Light C_(60) Fullerene and Amino Acids Lysine, Threonine, and Hydroxyproline in Aqueous Solutions

摘要

The solubility of light fullerene C_(60) bis-adducts and essential amino acids lysine, threonine, and hydroxyproline in water in the temperature range of 20–80°C is studied via isothermal saturation inside ampoules. Complex thermal analysis is used to study crystalline hydrates C_(60)(C_6H_(13)N_2O_2)_2 · 5H_2O, C_(60)(C_4H_8NO_3)_2 · 6H_2O, C_(60)(C_5H_9NO_3)_2 · 2H_2O in the temperature range of 40–1100°С. The concentration dependences of the sizes of associates in binary aqueous solutions of the indicated bis-adducts are studied via dynamic light scattering.