New electrochemical procedure for obtaining surface enhanced Raman scattering active polythiophene films on platinum E. A. Bazzaoui, S. Aeiyach, J. Aubard, N. Felidj, G. Lévi, N. Sakmeche and P. C. Lacaze J. Chim. Phys., 95 6 (1998) 1526-1530 DOI: 10.1051/jcp:1998321