Polymers Based on 3-amino-7-dimethylamino-2-methylphenazine hydrochloride: Synthesis, structure, and properties

Heterocyclic polymers based on 3-amino-7-dimethylamino-2-methylphenazine hydrochloride are synthesized for the first time via chemical oxidative polymerization in aqueous solutions of acetonitrile and DMF. The effects of the concentrations of reagents, their ratios, temperature, and the time of reaction on the yields and chemical structures of the polymers are studied. The structures of the polymers are investigated via FTIR spectroscopy, electron spectroscopy, X-ray photoelectron spectroscopy, and solid-state CP/MAS 13C NMR spectroscopy. It is found that polymer chains grow via the addition of C–N groups between 3-amino groups and the para position of phenyl rings relative to nitrogen. During the oxidative polymerization of 3-amino-7-dimethylamino-2-methylphenazine hydrochloride, abstraction of Cl–and one methyl group from the 7-dimethylamino group yields poly(3-amino-7-methylamino-2-methylphenazine). The resulting polymers are amorphous, electroactive, and thermally stable.