Studies by SERS spectroscopy of the structural properties of conducting polymers and carbon nanotubes

After being dispersed in liquid solvents (Ethanol, CHCl3), conducting polym ers and singlewalled nanotubes have been deposited on ruguous substrats (Au , Ag, Cu). With FT Raman technique (laser excitation : 1064 nm), we have ob tained SERS signal of both conductiong polymers and singlewalled nanotubes. The Raman signals change with substrat and/or solvent, which could be corr elated with the size of clusters formed at the surface and then to the depo sition mechanism. The main advantage of the >SERS technique will be emphasi zed in terms of enhancement as a powerful technique to study nanoparticles.