Complexation of L-arginine and L-lysine by p-sulphonatocalix (61 arene in aqueous solution at different temperatures

Abstract

The interaction of p-sulphonatocalix [6] arene towards L-arginine and L-lysine has been studied in<br />acidic aqueous solution (p1-1 2) using UV-Vis spectrophotometric titration technique. The psulphonatocalix<br />[6] arene was found to be able to form 1:1 complexe with amino acids in water.<br />The values of the association constant were determined at different temperatures to evaluate the<br />thermodynamic functions of the complexation reaction. The thermodynamics values of complexes<br />were compared to each other.