Synthesis and investigation of poly(p-phenylenediamine)–poly(1,4-benzoquinonediimine-N,N-diyl-1,4-phenylene)

• DOI: 10.1007/s11696-017-0378-2
• Publication Date: 2018-01-20T04:19:43Z
• Authors: Nagharsh A. Miraqyan; Rima H. Arakelyan; Narine A. Durgaryan; Angelo H. Durgaryan
• Keywords: p-Phenylenediamine; Poly(N-isopropylacrylamide)

Poly(1,4-benzoquinonediimine-N,N-diyl-1,4-phenylene) having similar structure to pernigraniline was synthesized by chemical oxidative polymerization of p-phenylenediamine and its salt using potassium peroxydisulfate as an oxidant in molar ratio 1:0.8, in acetic acid, at 278 K. Acetylation of amino end groups of polymers were carried out aiming to prevent self-condensation of amino groups with 1,4-benzoquinone diimine groups by 1,4-addition. Attempting to carry out the reduction of obtained polymer with hydrazine hydrate, it was shown that 1,4-addition of hydrazine to quinonediimine groups occurs instead of expected reduction reaction. When doping obtained polymers with iodine, the electrical conductivity increases up to 10−4 S/cm.