Synthesis, physical properties and Biological activity of Schiff bases based on chitosan bearing quinolinone moiety

Abstract

Synthesis, physical properties and biological activity of Schiff bases based on chitosan bearing quinolinone moiety Chitosan Cs was exposed to react with 4-hydroxy-6-methyl-2,5-dioxo-5,6-dihydro-2H-pyrano[3,2-c]quinolone-3-carboxaldehyde B in acid media to form Schiff base CsP, which shows high adsorption of remazol red (RR) dye, which was used in textile industry. Also, N-methyl-4-hydroxy-2H-quinolin-2-one-3-carboxaldehyde C was reacted with Chitosan in acid medium to form Schiff base CsQ, which possess a higher biological activity.

New composites of chitosan Schiff bases bearing quinolinone and pyranoquinolinone moieties loaded with silver nanoparticles were prepared using Ag/NPs (with a ratio of 1%) with respect to chitosan Schiff base.