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以4-己氧基苯甲酸为质子给体,4-硝基苯乙烯基吡啶为受体,四氢呋喃为溶剂,制备了一种液晶超分子复合物—羧酸吡啶类氢键自主装型液晶复合物,用DSC和热台偏光显微镜对所合成化合物进行了相态和液晶性研究,并用IR1、H-NMR对所合成化合物进行了结构表征。结果表明:合成了目标化合物;IR结果证明了羧基和吡啶环间分子间氢键代替了羧基间的分子间氢键;相态及液晶行为研究证明了氢键复合物具有典型的热致液晶性能且呈现明显的向列型液晶态。
A liquid crystalline supramolecular complex-carboxylic acid pyridine hydrogen-bonded self-assembled liquid crystal composite was prepared by using 4-hexyloxybenzoic acid as proton donor, 4-nitrostyrylpyridine as acceptor and tetrahydrofuran as solvent The phase and liquid crystallinity of the synthesized compounds were studied by DSC and hot stage polarized light microscope. The synthesized compounds were characterized by IR1 and H-NMR. The results showed that the target compounds were synthesized. The IR results showed that the intermolecular hydrogen bonds between the carboxyl groups and the pyridine rings replaced the intermolecular hydrogen bonds between the carboxyl groups. The phase behavior and liquid crystal behavior proved that the hydrogen bonding complexes have the typical thermotropic liquid crystal properties And show a significant nematic liquid crystal state.