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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., 2011, 3, 5—14. |
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Synthesis and Mesomorphic Properties of 1-Alkyl-3,5-Diamino-1,2,4-Triazoles
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E. A. Danilova1, A. A. Ivolin1, A. A. Vorontsova1, M. K. Islyaikin1,
G. A. Anan'eva2, N. V. Zharnikova2, V. V. Bykova2, N. V. Usol'tseva2
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Author affiliations
1Ivanovo State University of Chemistry and Technology
153460 Ivanovo, Av. F. Engel’s, 7.
E-mail: danilova@mail.ru
2Ivanovo State University, Nanomaterials Research Institute
153025 Ivanovo, Ermak Str., 39.
E-mail: nv_usoltseva@mail.ru
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Abstract
1-Pentyl-, 1-decyl- or 1-dodecyl-3,5-diamino-1,2,4-triazoles were synthesized by di-rect alkylation of 3,5-diamino-1,2,4-triazole with corresponding alkyl bromides. The com-pounds were characterized by MS-, IR- and NMR spectral data, elemental analysis. The mesomorphic properties of 1-decyl- and 1-dodecyl-3,5-diamino-1,2,4-triazole were studied by polarizing optical microscopy and differential scanning calorimetry. It was shown that given compounds exhibit mesomorphic properties both on heating and cooling.
Keywords: synthesis, 1-decyl-3,5-diamino-1,2,4-triazole, 3,5-diamino-1-dodecyl-1,2,4-thriazole mesomorphic properties
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