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Liquid Crystals and their Application
Russian Journal

Zhidkie kristally i ikh prakticheskoe ispol'zovanie

Жидкие кристаллы и их практическое использование

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Rus Eng


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Zhidk. krist. ikh prakt. ispol'z. = Liq. Cryst. and their Appl., 2013, 1, 7—19.

Synthesis and Mesomorphism of Alkylsulfamoyl Derivatives of Tetrakis-4-(1-Benzotriazolyl)Tetrakis-5-[1(2)-Naphthoxy]-Phthalocyanines

S. A. Znoiko1, A. V. Krivova1, G. P. Shaposhnikov1, G. A. Anan'eva2, N. V. Zharnikova2, N. V. Usol'tseva2

Author affiliations
1Ivanovo State University of Chemistry and Technology, Institute of Macroheterocycles
153000 Ivanovo, Av. F. Engel’s, 7. 
2Ivanovo State University, Nanomaterials Research Institute
153025 Ivanovo, Ermak Str., 39. 

This paper continues a series of works devoted to synthesis and investigation of mixed-substituted phthalocyanines which combined on their periphery benzotriazolyl and aryloxy groups. Eight new alkylsulfamoyl derivatives of tetrakis-4-(1-benzotriazolyl)tetrakis-5-[1(2)-naphthoxy]­phthalocyanines of copper and nickel were synthesized. Method of polarization microscopy revealed that copper phthalocyanines containing eight octadecyl or diethylsulfamoil fragments in 2-naphthoxy groups possess thermotropic mesomorphism.Besides, tetrakis-4-(1-benzotriazolyl)tetrakis-5-(1,6-di(octadecylsulfamoyl)-2-naphthoxy)phthalocyanine of copper forms lyomesophases both in polar and apolar organic solvents. Mesomorphic properties were also induced by introducing of four octadecylsulfamoyl groups in the non-mesogenic molecule of tetrakis-4-(1-benzotriazolyl)tetrakis-5-(1-naphthoxy)phthalocyanine of copper. Liquid crystalline properties were not observed in case of nickel phthalocyanines.

Keywords: synthesis, mesomorphism, substituted phthalocyanines

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