Abstract

The article presents the synthesis and liquid crystalline properties of some of new bent and linear core compounds containing a 1,3,4-oxadiazole, piperazine and thiazolidin-4-one rings as a central core. The new synthesized compounds were characterized by elemental analysis and FTIR, ¹HNMR and mass spectroscopy). The liquid crystalline properties were studied by polarized optical microscopy and differential scanning calorimetry. All Schiff bases compounds with 1,3,4-oxadiazole and piprzaine ring in central core presented liquid crystalline properties. The liquid crystallinity of compounds containing 1,3,4-oxadiazole and thiazolidin-4-one rings as a central core were found depending on the type of terminal substituents.

摘要

本文介绍了一些以 1,3,4-恶二唑、哌嗪和 thiazolidin-4-one 环为中心核的新型弯曲和线性核化合物的合成和液晶性质。通过元素分析和FTIR、¹ HNMR和质谱对新合成的化合物进行了表征）。通过偏光显微镜和差示扫描量热法研究液晶性质。所有在中心核中具有 1,3,4-恶二唑和哌嗪环的席夫碱化合物均呈现液晶性质。根据末端取代基的类型，发现含有 1,3,4-恶二唑和 thiazolidin-4-one 环作为中心核的化合物的液晶性。