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N. V. Usol'tseva¹, V. V. Bykova¹, G. A. Anan'eva¹, A. I. Alexandrov¹, T. V. Pashkova¹, A. V. Kazak¹,  A. S. Semeikin², A. V. Glazunov², T. V. Lyubimova³, S. G. Yudin⁴, S. P. Palto⁴

Author affiliations
¹Ivanovo State University
Russia 153025 Ivanovo, Ermak Str., 39.
E-mail: nv_usoltseva@mail.ru
²Ivanovo State University of Chemistry and Technology
Russia 153460 Ivanovo, Av. F. Engel’s, 7. 
³Institute of Solution Chemistry, Russian Academy of Sciences
Akademicheskaya st, 1, Ivanovo, Russia
⁴A. V.Shubnikov Institute of Crystallography, Russian Academy of Sciences
119333 Moscow, Leninsky prospect 59. 

Abstract
In order to obtain data on the influence of molecular structure peculiarities on thermotropic and lyotropic mesomorphism the synthesis and study of 27 new meso-substituted tetraphenylporphyrins and their metal complexes with substitution by alkoxy-groups (from –OC₄H₉ to - OC₁₆H₃₃) in para-, orto- or meta-positions have been carried out. Mesophase types, their dependency on the structure of porphyrin derivatives and the position of substituents are investigated.

Keywords: porphyrin derivatives, metal complexes, liquid crystal properties, structure, Lengmuir-Blodgett films