ELECTROCHEMICAL POLYMERIZATION OF ALPHA,OMEGA-DI(N-PYRROLYL)ALKANES

Alpha,omega-Di(N-pyrrolyl)alkanes, C4H4N(CH2)nNC4H4 (n = 1-4 and 8), w ere prepared. Dipyrrolylakanes (n = 3, 4 and 8) are newly synthesized substances. Electrochemical polymerization leads to the formation of c onducting polymer films on platinum and gold electrodes. Except for po ly(dipyrrolylmethane), the oxidation potentials increase and electrica l conductivities decrease with increasing n. Discontinuous characteris tics of poly(dipyrrolylmethane) are discussed in terms of intramolecul ar cyclization. Dipyrrolylethane shows the most pronounced ability to electrochemical polymerization, and forms a polymer with the highest d .c. conductivity (1.7 x 10(-2) S cm-1).