Solubility, Thermal Analysis, and Association of the bis-Adducts of Light C60 Fullerene and Amino Acids Lysine, Threonine, and Hydroxyproline in Aqueous Solutions

Konstantin N. Semenov, A. V. Kurilenko, Nikolay A. Charykov, В. А. Кескинов, A. L. Vorob’ev, Zh. K. Shaimardanov, N. A. Kulenova, Zh. S. Onalbaeva, D. G. Letenko

2019

Closed access Metadata (CSL-JSON)

DOI 10.1134/s0036024419070240

Data confidence 70 medium

How this score is calculated

It is built from checkable properties of the record itself: whether the article has a DOI, how many independent sources confirmed its data, whether the required fields are filled in, and how recent the latest confirmation is. Disagreement between sources and a missing identifier lower it. A value of 80 or above means the record was published without further checking; 60 to 79 means it is published at reduced confidence, with a manual check advisable. A record verified by an editor by hand is never pushed below 90 by a recalculation. This scores our data about the article, not the article itself.

Abstract

Abstract The solubility of light fullerene C60 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 C60(C6H13N2O2)2 · 5H2O, C60(C4H8NO3)2 · 6H2O, C60(C5H9NO3)2 · 2H2O 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.