LASER SPECTROELECTROCHEMISTRY ALPHA,BETA,GAMMA,DELTA-TETRA-(4-TRIMETHYL AMMONIUM PHENYL) PORPHYRIN

In the present study, an experimental apparatus for laser spectroelect rochemical studies was developed. Laser-induced fluorescence spectrosc opy and surface-enhanced resonance Raman spectroscopy were used in sit u to study the electrochemical reduction process of alpha, beta, gamma , delta-tetra-(4-trimethyl ammonium phenyl) porphyrin. It was conclude d that adsorbed porphyrins on the surface of an Ag electrode underwent partial incorporation of the porphyrin ring in the Ag. The electroche mical reaction of porphyrin on an Ag electrode was electroreduction, a nd the electroreduction of porphyrin occurred only in the porphyrin ri ng, and not on the substituents of the porphyrin. (C) 1997 Elsevier Sc ience S.A.