The Synthesis, Characterization, Electrochemical and Spectroelectrochemical Properties of Novel Unsymmetrical Phthalocyanines Containing Naphthoic Acid and Di-tert-butylphenoxy Groups

Novel unsymmetrical A3B type 2,4-di-tert-butylphenoxy groups and 6-carboxy-2-naphthoxy substituted metal-free and metallo phthalocyanine derivatives were successfully synthesized by a statistical condensation reaction of the corresponding two phthalonitriles. The compounds were characterized by elemental analyses, FT-IR, 1H-NMR, UV–Vis and MALDI-TOF MS. Electrochemical and SEC measurements supported the proposed structures. The results indicated the usability of these complexes as functional materials due to their rich redox activities. Good photovoltaic performance of DSSC based on the ZnPc (3) indicated its possible usage in this field.