Synthesis and characterization of novel resorcinol based trisazo reactive dye ligand and its different metal complexes for cotton dyeing

Abstract

The goal of this study was to create a new trisazo reactive dye ligand from 6-nitro-2-aminophenol-4-sulphonic acid, resorcinol derivative, and vinyl sulphone para ester, as well as their metal complexes with Fe (II), Ni (II), Cu (II), and Zn (II). The diazotization of 6-nitro-2-aminophenol-4-sulphonic acid was followed by coupling to resorcinol in an alkaline medium for the synthesis of a mono-azo dye ligand. To make reactive dye, diazotized vinyl sulphone para ester was coupled with 6-nitro-2-aminophenol-4-sulphonic acid resorcinol derivative in an alkaline medium. Metal complexes of reactive dyes with 3d transition metals such as iron, nickel, copper, and zinc have also been created. The novel synthesized reactive dyes were applied to cotton to see how well they dyed. Spectro-analytical techniques were used to authenticate the compositions of all newly synthesized substances. The prepared reactive dyes were also used on textiles for dyeing features such as light fastness and wash fastness and were found to have high values of 4–5 on the grey scales, and 4–5 on the blue scales.