Novel Dinitrophenylhydrazones Containing 1,2,3-Triazole Nucleus as Disperse Dyes for Polyester Fabric Dyeing and Functional Finishing and Antibacterial Activities

In this study, three novel 4-(1-(2-(2,4-dinitrophenyl)hydrazineylidene)ethyl)-5-methyl-1-aryl-1H-1,2,3-triazoles were synthesized by the reaction of 1-(5-methyl-1-(4-subst. phenyl)-1H-1,2,3-triazol-4-yl)ethan-1-one with (2,4-dinitrophenyl)hydrazine in absolute ethanol containing traces Conc. HCl under reflux condition. NMR spectroscopy was used to identify the novel products, which were then investigated as disperse dyes for dyeing and functional finishing of polyester fabric. The results indicated that the dyed fabric samples showed very good fastness to washing, perspiration and light as well as remarkable UV protection and antibacterial properties. Moreover, incorporating of Ag-NPs with a concentration of 1% in the dyeing bath, upgraded the UV protection as well as antibacterial properties of the dyed samples.

Automated summary

In this study, three novel dyes were synthesized and applied for dyeing and functional finishing of polyester fabric. The dyed fabric samples showed excellent durability as well as remarkable antibacterial and UV protection properties. Furthermore, the addition of silver nanoparticles further enhanced the UV protection and antibacterial properties.