Polymeric Phthalocyanines and their Precursors, 13 Synthesis, Structure and Electrochemical Properties of Thin Films of Polymeric Phthalocyanines from Tetracarbonitriles

Thin films (45 – 1200 nm thickness) of polymeric phthalocyanines were prepared by the reaction of copper films on various carriers with gaseous aromatic tetracarbonitriles. The films were characterized by IR, UV/VIS, and ESCA spectra. The electrical conductivity is in the order of 10−2‐10−5 S cm−1. The electrochemical activity of the films on graphite was studied in acid and alkaline electrolyte. The films exhibit rapid reduction and reoxidation. The pH dependence corresponds to that of the hydrogen electrode approximately.