Focus on the synthesis and application of azo dyes has been increasing within scientific research groups due to their versatile uses as synthetic colorants. A series of monoazo dyes synthesized via the coupling reaction of hydroxyl and amino substituted pyridine compounds to a diazonium ion formed by the reaction of aniline with sodium nitrite under acidic conditions was studied. The synthetic method utilizes nitrite bound ion exchange resin beads to simplify the work-up of the diazonium ion and the coupling reaction. All products were characterized using ATR-IR, NMR, and UV-Vis. The chelation properties of each monoazo dye was evaluated with the chloride salts of iron (II), cobalt (II), nickel (II), copper (II), and zinc (II). The effect of atomic radius of the metals and the azo linkage participation in chelation was studied.

Synthesis of pyridine derivative monoazo dyes and their metal chelation properties

Macromolecular Chemistry: The Second Century

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ACS Spring 2020 National Meeting & Expo

The official archive and repository for all ACS Meetings & Expositions abstracts and select posters or presentations.