POLY[(1-METHYLENE-2-METHYLNAPHTHALENE)-N-PYRROLE] - A NEW FLUOROPHORE-CONTAINING ELECTROACTIVE CONDUCTING POLYMER

A new fluorophore-containing polymer, poly[(1-methylene-2-methylnaphth alene)-N-pyrrole] (PMNPy), was electrosynthesized by anodic oxidation of the corresponding monomer (MNPy) in 0.1 M tetrabutylammonium perchl orate (TBAClO(4)) or 0.1 M tetrabutylammonium tetrafluoroborate (TBABF (4)) acetonitrile solution and characterized spectroscopically. An ele ctroactive PMNPy film was formed either by cyclic voltammetry between -0.4 and 1.3 V versus Ag/AgCl or at controlled potential (1.3 V). FT-I R studies indicate that this polymer has a linear structure, with 2,5 coupling on the pyrrole moiety. Scanning electron microscopy (SEM) ana lysis shows that oxidized PMNPy films have a globular structure, with thicknesses ranging between 0.4 and 1.3 mu m. UV absorption, excitatio n and emission fluorescence spectra were performed on PMNPy and the co rresponding monomer. The fluorescence properties of the polymer in ace tonitrile solution as well as in the solid state indicate the persiste nce of a naphthalene-like emission.