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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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Zhidk. krist. ikh prakt. ispol'z. = Liq. Cryst. and their Appl., 2013, 1, 7—19. |
![full text](/pdfs/2012_1_04_03_35_59_Adobe%20Reader.jpg)
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Synthesis and Mesomorphism of Alkylsulfamoyl Derivatives of Tetrakis-4-(1-Benzotriazolyl)Tetrakis-5-[1(2)-Naphthoxy]-Phthalocyanines
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S. A. Znoiko1, A. V. Krivova1, G. P. Shaposhnikov1,
G. A. Anan'eva2, N. V. Zharnikova2, N. V. Usol'tseva2
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Author affiliations 1Ivanovo State University of Chemistry and Technology, Institute of Macroheterocycles
153000 Ivanovo, Av. F. Engel’s, 7. E-mail: ttoc@isuct.ru
2Ivanovo State University, Nanomaterials Research Institute
153025 Ivanovo, Ermak Str., 39. E-mail: nv_usolseva@mail.ru
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Abstract 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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