Spectroscopic and electrochemical studies on platinum and palladium phthalocyanines

Abstract

The synthesis, spectroscopy and electrochemical characterisation of palladium and platinum phthalocyanines is reported. Electrochemical techniques were used in conjunction with electronic absorption spectroscopy to analyse the reduced and oxidised phthalocyanine species in solid films and in solution, and significant and extensive excitonic coupling resulting in broadening of the Q-band was observed in the film phase. The Q-band was also shown to be affected by the electrolyte, changes in potential concomitant with the redox properties of the films and structural changes of the phthalocyanines within the films.