MOLECULAR COMPLEXES OF ZEATIN WITH GLYCYRRHIZIC ACID MONOAMMONIUM SALT

Abstract

This study describes the preparation and spectral characterization of supramolecular complexes of zeatin with glycyrrhizic acid monoammonium salt (MASGA). The complexes were obtained by a liquid-phase method in MASGA:zeatin molar ratios of 2:1, 4:1 and 8:1. The obtained samples were characterized by ultraviolet (UV) and infrared (IR) spectroscopy. The yields of the complexes were 89%, 90% and 93%, respectively, and the highest yield was observed for the 8:1 system. The UV spectra showed absorption maxima in the 261.4-264.0 nm region, while the IR spectra revealed changes in the absorption bands of OH, NH, C=O, C=C/C=N and C-O-C groups. These spectral changes indicate the formation of supramolecular systems stabilized mainly by hydrogen bonding, ion-dipole interactions and hydrophobic interactions. The results suggest that MASGA can be considered a promising supramolecular carrier for zeatin.