3,6-Bis(2-thienyl)-N-ethylcarbazole (Th-ECz-Th) was obtained by using organometallic polycondensation mediated by organotransition metal complexes. The properties of electrochemically obtained polymer films from this monomer were characterized by simultaneous voltametric and in situ conductivity and electrochemical quartz microbalance techniques. (c) 2005 Elsevier Ltd. All rights reserved.