两种新型氢键诱导液晶材料的合成及表征  

The synthesis and study of two kinds new hydrogen bond liquid crystals

作　　者：韩相恩[1,2] 魏贤勇[1] 王兴勇[1] 杨立华[1] 韩辉[1] 

机构地区：[1]中国矿业大学(徐州)化工学院,221008 [2]煤炭加工与高校节能教育部重点实验室,徐州221008

出　　处：《化工新型材料》2010年第7期46-48,共3页New Chemical Materials

基　　金：国家自然科学基金委员会创新研究群体科学基金(50921002)

摘　　要：以对氨基苯甲酸、对硝基苯甲醛和吡啶衍生物为原料合成了两种新型氢键诱导液晶。用IR、1H-NMR和元素分析对所合成的化合物进行了结构表征,并用DSC和带热台的偏光显微镜分别对质子供体和超分子复合物复合前后的液晶行为进行了研究。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,复合物表现出分子的热力学行为;液晶行为研究证明了氢键复合物是典型的热致液晶且呈现明显的向列型液晶态,超分子液晶复合物较质子供体的液晶相范围宽且其相转变温度低于质子供体,说明分子间氢键起到了稳定液晶相态的作用。Two new hydrogen bond induced liquid crystals with tetrahydrofuran as the solvent,with p-aminbenzoic acid and p-nitrobenzaldehyde and the pyridine derivative have been synthesized.Their structures of proton donor and supermolecular liquid crystalline compounds have been identified by IR,1H-NMR and elemental analysis.Their liquid crystalline phase transitions have been studied by DSC and optical polarized microscope.It has been conclued that the IR spectra of these two compounds have showed the existence of the intermolecular hydrogen bond.The results of DSC and optical polarized microscope have showed that the proton donor and the supermolecular liquid crystalline compounds have typical thermotropic nematic liquid crystalline.The phase transition temperatures of these supermolecular liquid crystalline compounds are different from the proton donor.So,it has been concluded that liquid crystalline phase could be stablized by the intermolecular hydrogen bond action.

关 键 词：氢键液晶 自组装 吡啶 偶氮 希夫碱 

分 类 号：O753.2[理学—晶体学]