Synthesis of fused polynuclear systems based on phthalocyanine and triazolehemiporphyrazine units

Unsymmetrically substituted binuclear phthalocyanine derivatives 8 and 9 ha ve been synthesized by mixed condensation of nickel(II) dicyanophthalocyani ne 6 with dioctyloxyphthalonitrile 7 in the presence of either nickel(II) o r zinc(II) chloride. In addition, a heterotrinuclear phthalocyanine-triazol ehemiporphyrazine-phthalocyanine complex 16 has been obtained using the met hodology described earlier for the preparation of heterobinuclear phthalocy anine-triazolehemiporphyrazine systems (13a-13e). All these compounds exhib it in their UV-vis spectra broad and split Q bands that are shifted to the near-IR in comparison with mononuclear phthalocyanines as a consequence of the enlargement of the pi conjugation. Copyright (C) 1999 John Wiley & Sons , Ltd.