THERMOCHEMICAL PROPERTIES OF SILVER NANOPARTICLE COMPOSITIONS FUNCTIONALIZED BY CYTISINE BETAOLIGOSACCHARIDE CLATHRATE

Abstract

Introduction. The article discusses the thermochemical properties of the composition of
silver nanoparticles functionalized by the β-oligosaccharide clathrate complex of cytisine and its O,Odimethylphosphate derivatives. Methodology. Thermogravimetric and differential thermogravimetric
analyses were used to obtain data on the kinetics of thermal decomposition of the studied substrates, as
well as their encapsulated complexes of inclusions modified with silver nanoparticles. Results and
Discussion. Studies have been carried out on a scanning electron microscope aimed at analyzing the
evolution of their structure under the influence of various temperature conditions. Energy profiles of the
processes of destruction of clathrate molecules have been obtained. It is shown that the process of
destruction of clathrate molecules begins in reactions with higher activation energy values and continues
with a uniform decrease in Ea along the reaction path, which indicates a multi-stage process. The research
results made it possible to identify the corresponding phase transformations of nanocompositions, as well
as possible recrystallization processes and other changes occurring in the inclusion complexes as a result
of annealing. Conclusion. The kinetic data obtained contribute to predicting the properties of the obtained
compositions of silver nanoparticles functionalized by the β-oligosaccharide clathrate complex of cytisine
and its phosphorous derivative under long-term storage conditions and searching for optimal ways to
stabilize them.