Benzoannelated a3 b-phthalocyanines with diethyleneglycol substituents: Synthesis and control of aggregation

Abstract

New benzoannelated phthalocyanine H2 A3 B has been synthesized by cross-condensation of 4,5-dibutoxyphthalonitrile A and naphthalonitrile B bearing two diethyleneglycol substituents. UV-Vis and1H NMR measurements performed for H2 A3 B showed that the presence of free OH-groups in H2 A3 B enhances its aggregation in solution in comparison with its O-tetrahydropyranyl derivative H2 A3 Bt, which can be considered as a way to control the physicochemical properties of asymmetric phthalocyanines.