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I. Kaya, A. Bilici

Syntheses, structures, electric conduction, electrochemical properties and antimicrobial activity

of azomethine monomer and oligomer based on 4-hydroxybenzaldehyde

and 2-aminopyridine (in English)
Polimery 2007, No 11/12, 827


Summary

The effects of temperature (50-80°C), reaction time (up to 15h) as well as type and concentration of oxidizing agent (NaOCl, air O2, H2O2) on the course of oxidative polymerization of 4-[(pyridin-2-yl-imino)methyl]phenol (4-PIMP) in aqueous alkaline medium, and on the yield of the oligomers formed (O-4-PIMP) were investigated. The optimal conditions of the process have been found. Reaction products were characterized using the following methods: 1H NMR, 13C NMR, FT-IR, UV-VIS, gel permeation chromatography and thermal analyses TG-DTA. Mn values of O-4-PIMP are in the range 1250-4450. The oligomer shows better thermal stability than the monomer. On the basis of voltammetric measurements' results the electrochemical properties of 4-PIMP and O-4-PIMP were characterized in detail, including an effect of iodine doping of O-4-PIMP on the electric conduction. The comparison of antibacterial activity of 4-PIMP and O-4-PIMP against 8 bacterial strains has been done.


Key words: 4-[(pyridin-2-yl-imino)methyl]phenol, oligomers, oxidative polymerization, electrochemical properties, antibacterial activity


e-mail: kayaismet@hotmail.com


I. Kaya, A. Bilici

Syntheses, structures, electric conduction, electrochemical properties and antimicrobial activity of azomethine monomer and oligomer based on 4-hydroxybenzaldehyde and 2-aminopyridine (in English)