Melamine (1,3,5-Triazine-2,4,6-triamine), a nitrogen-based compound used in commercial and industrial plastics, it is a component in adhesives and molding compounds; when mixed with resins, it has fire-retardant properties. Amines react with ketones to from Schiff bases and the Schiff-bases. The Schiff bases involving aromatic amines and quinones form bright colored compounds with applications in visualizing latent prints and dyeing industry. Further some of the Schiff bases when exposed to anions form charge transfer intermediates whose color is further enhanced, the latter is also beneficial in enhancing color of visualized latent fingerprints. In this study, melamine and Tetracyanoethylene (TCE) has been reacted with Tetrachloro-1,4-benzoquinone (TCBQ) and 2-hydroxy-1,4-naphthoquinone (HNQ, Lawsone). The reactions were carried out in a microwave at 150oC and 7 Barr pressure for 5-10 min. TLC analysis revealed the formation a new product(s). The new compounds when exposed to ammonia in solution change colors/become brighter and causes their absorption bands to shift in a way that suggests that new compounds have sensory properties. The newly synthesized compounds inhibit bacterial growth suggesting possible pharmacological properties. In conclusion, we have successfully prepared three new Schiff bases with (i) novel anion sensory properties, and (ii) antimicrobial activities, that may be exploited to develop latent fingerprints.

Synthesis and partial characterization of melamine Schiff bases and their antimicrobial activities

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.