Abstract
The electrochromism of (octacyanophthalocyaninato)metal‐metal complex (, ) films was investigated by in situ visible and Raman spectroscopies in and . A new absorption band was observed in the near‐infrared region during electrochemical reduction in these electrolytes. In the film, charges stored in the cathodic waves were 1.1 and 1.3 F/mol in the acid and alkaline electrolytes, respectively. In the case of film, the stored charge was 1.2 F/mol in the alkaline electrolytes. At the first reduction, was reduced to . The Raman spectra of the films showed that the isoindole moiety was affected by the reduction. It was revealed from both the visible and Raman spectra that the electron accepting site of in the film translated from the benzene rings and/or cyano groups to the azaporphyrin ring and in the films was protonated at the nitrogens in positions 6, 13, 20, and 27 by the reduction in these electrolytes.
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