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S. A. Znoiko¹, A. V. Krivova¹, G. P. Shaposhnikov¹, G. A. Anan’eva², N. V. Usol’tseva²

Author affiliations
¹Ivanovo State University of Chemistry and Technology, Institute of Macroheterocycles
153460 Ivanovo, Av. Sheremetev, 7. 
E-mail: ttoc@isuct.ru
²Ivanovo State University, Nanomaterials Research Institute
153025 Ivanovo, Ermak Str., 39. 
E-mail: nv_usolseva@mail.ru

Abstract
Sulfochlorides of benzotriazolylsubstituted phthalocyanines were synthesized by the interaction between tetrakis-4-(1-benzotriazolyl)tetrakis-5-[1(2)-naphthoxy]phthalocyanines and mixture of thionyl-chloride and chlorsulfonic acid. Then sulfochlorides were hydrolyzed by water up to corresponding sulfonic acids. Their solubility in aqueous media is a due to presence of sulfo-groups in naphthoxy-substituents of benzotriazolylsubstituted phthalocyanines. Research of electronic absorption spectra showed the influence of the nature of central metal on place of Q-band in UV-Vis spectra of the synthesized phthalocyanines. Bathochromic shift of Q-band of the studied phthalocyanines in the order: Ni < Cu < Zn < AlCl was observed. It was found that tetrakis-4-(1-benzotriazolyl)tetrakis-5-(1',6'-disulfo-2'-naphthoxy)phthalocyanine of copper possesses amphotropic mesomorphism.

Keywords: synthesis, sulfonic acids, benzotriazolylsubstituted phthalocyanines, mesomorphism