摘要
通过醚化、还原、缩合及酯化等反应,合成了以4-[((4-己烷氧苯基)亚氨基)甲基]苯基异烟酸酯为质子受体,烷氧基苯甲酸为质子供体,氢键为链接基的希夫碱型超分子液晶化合物。用IR、1H NMR对中间体及其产物进行了结构表征,并用热台偏光显微镜分别对目标产物的液晶行为进行了研究。通过IR对羧基和吡啶环间分子间氢键的形成进行了验证,通过偏光显微镜说明氢键复合物是典型的热致液晶且呈现近晶相和向列相两种相态,并且复合物较质子供体和受体的液晶相范围宽,说明分子间氢键起到了稳定液晶相态的作用。
The new hydrogen bonds to the Schiff base link-based supramolecular liquid crystal compound was synthesized.4-（（（4-hexoxyphenyl）imidogen） methyl） phenyl isonicotinic ester as the proton receptorand,4-alkoxybenzoic acid as the proton donor.The structures of liquid crystalline compounds were identified by IR and 1H-NMR.The liquid crystalline phase transitions were studied by optical polarized microscope.It was conclued that the IR spectra of these two compounds showed the existence of the intermolecular hydrogen bond.The results of optical polarized microscope showed that the the supermolecular liquid crystalline compounds had typical thermotropic smetic and nematic liquid crystalline.These supermolecular liquid crystalline compounds had a wide phase transition temperatures.So,it concluded that liquid crystalline phase could be stablized by the intermolecular hydrogen bond action.
出处
《化工新型材料》
CAS
CSCD
北大核心
2010年第11期59-62,共4页
New Chemical Materials
