Synthesis of an oligo(phenylenevinylene)-bridged phthalocyanine dimer

As a model compound for corresponding PPV polymers containing phthalocyanine (Pc) subunits a phenylenevinylene-bridged nickel Pc dimer is synthesized. The synthesis route includes a modified Pc-monoaldehyde, which furnishes with 0.5 equivalents of p-xylylene bis(triphenylphosphonium)bromide in a Wittig reaction the Pc dimer.