New conducting polymers were obtained by anodic oxidation of various unmetallated or metalloporphyrins bearing fluorene or 9,9'-spirobifluorene groups in meso positions. The anodic behaviour of monomers and polymers is presented. The physicochemical properties (IR, UV-Vis spectroscopy and spectroelectrochemistry, scanning electron microscopy, electronic microanalysis) of these new materials are then discussed. (C) 2005 Elsevier B.V. All rights reserved.