Synthesis and Aggregation of Cationic Zinc and Magnesium Phthalocyanines Containing 4-(3,5-Dimethyl-1H-pyrazol-1-yl)phenoxy Groups

Abstract

Tetracationic metal phthalocyanines were synthesized by the quaternization of the C_s-regioisomers of tetrasubstituted zinc and magnesium phthalocyanines containing 3,5-dimethylpyrazole fragments. The individuality of the synthesized compounds was confirmed by HPLC‒mass spectrometry. The aggregation of the cationic metal phthalocyanines in water and aqueous-organic media, as well as in the presence of Triton X- 100 was studied. The dependence of the dimerization constant on the polarity of mixed solvents was determined.