SYNTHESIS OF CONDUCTING POLYPYRROLE AND POLYCARBAZOLE CONTAINING HYDROXAMIC ACID GROUPS

Although conducting polyheteroaromatics have been widely investigated, those containing hydroxamic acid groups have not been studied. In thi s work we have synthesized various N-(carbohydroxamic acid)pyrrole and N-(carbohydroxamic acid)carbazole derivatives from a series of N-subs tituted ester groups. The compounds obtained were then chemically poly merized in the presence of oxidants such as ammonium persulphate, and Iron (III) perchlorate. The conductivity of these polymers was measure d by four probe methods. The compounds N-(2-ethane-carbohydroxamic aci d)pyrrole (VI), 9-(carbohydroxamic acid)carbazole (VII), and 9-(2-etha necarbohydroxamic acid)carbazole (XII) were successfully electropolyme rized by a cyclic voltametry method under 6 x 10(-3) M of monomer, 0.1 M tetrabutylammonium perchlorate, 20 ml acetonitrile, Pt disk working electrode, and SCE as a reference electrode condition. These compound s gave coloured complexes with certain metals.