SYNTHESES AND CHARACTERIZATION OF POLY(AMINOPHENAZINES)

The oxidative polymerization of o-phenylenediamine was studied under a variety of conditions. At room temperature the reaction of o-phenylen ediamine with ammonium persulfate in HCl acid medium gives a dimer, 2, 3-diaminophenazine. The same reaction at 70 degrees C results in a tri mer with an open structure, [3-amino-2-(3,4-diaminophenylamino)]-phena zine hydrochloride. At 118 degrees C, the oxidative polymerization in glacial acetic acid medium gives poly(aminophenazine) acetate, analogo us to polyaniline. However, either because of the atactic nature of th e polymer and the consequences of this on the stability of charge carr iers or because protonation occurs at localized amines, no electrical conductivity was found.