Cryometry and excess thermodynamic functions in water soluble of the fullerenol C60(OH)24

2020

Full text Open access: Gold Metadata (CSL-JSON)
DOI 10.17586/2220-8054-2020-11-2-205-213
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

The temperature of water-ice crystallization initiation decreases (∆T) were determined in the binary water solutions of water soluble fullerenol: C 60 (OH) 24 -H 2 O at 272.85-273.15K. Solution concentrations (in molar fractions) vary over a wide range x nano-cluster = 5.0 • 10 -6 ÷ 1.6 • 10 -4 a.un.Liquidus temperatures were determined with the help of Beckman thermometer with a linear resolution of the device scale ∆T ∆h ≈ 0.01 K/mm (h -height of Hg capillary raising).For the thermodynamic description of the discussed systems, we have elaborated an original semi-empirical model, the virial decomposition asymmetric model (VD-AS), with assistance from partial molar functions of nano-clusters (activities and activity coefficients) were calculated.The Gibbs energies for the solutions and miscibility gap concentration regions were calculated.VD-AS model excellently describes pre-delamination or micro-heterogeneous-structure formation in the considered solutions.These calculations are confirmed by the dynamic light scattering data.