Synthesis and mesomorphic properties of 5,10,15,20-tetra(aminophenyl)porphin derivatives on the basis of 3,4,5-trihydroxybenzoic acid

V. Bykova; M. Zharova; A. Semeikin; T. Karmanova; Nadezhda Usol'tseva

doi:10.1117/12.581076

1 September 2004 Synthesis and mesomorphic properties of 5,10,15,20-tetra(aminophenyl)porphin derivatives on the basis of 3,4,5-trihydroxybenzoic acid

V. Bykova, M. Zharova, A. Semeikin, T. Karmanova, Nadezhda Usol'tseva

Author Affiliations +

Proceedings Volume 5565, XV Conference on Liquid Crystals; (2004) https://doi.org/10.1117/12.581076
Event: XV Conference on Liquid Crystals, 2003, Zakopane, Poland

Abstract

The synthesis and investigation of mesomorphic properties of 5,10,15,20-tetra(aminophenyl)porphin derivatives on the basis of 3,4,5-trihydroxybezoic acid were carried out to study the influence of molecular structure geometry on thermotropic and lyotropic mesomorphism in a number of organic solvents. Introduction of two bulky fragments into R₁ position (X, XI) or four bulky fragments into R₁ and R₂ (XII, XIII) positions (in case of meta- or ortho-substitution of benzene rings) leads to emerging of monotropic mesophase. Tetra-substitution of porphyrine cycle in the para-position of the benzene ring (compound XIV) reveals the enantiotropic mesophase. The influence of bulky fragments on the glass-forming capacity of the compounds was researched.

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V. Bykova, M. Zharova, A. Semeikin, T. Karmanova, and Nadezhda Usol'tseva "Synthesis and mesomorphic properties of 5,10,15,20-tetra(aminophenyl)porphin derivatives on the basis of 3,4,5-trihydroxybenzoic acid", Proc. SPIE 5565, XV Conference on Liquid Crystals, (1 September 2004); https://doi.org/10.1117/12.581076

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