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以4'-羟基联苯为原料合成了8种新型4'-酰基-4-羟基联苯酯类化合物.除化合物5_h外,均为新的近晶相液晶化合物.它们具有较宽的相变温度范围和较高的热稳定性.用偏光显微镜和差热分析仪研究了它们的相行为,讨论了分子结构对液晶相行为的影响.
Eight novel 4’-acyl-4-hydroxybiphenyl esters were synthesized from 4’-hydroxybiphenyl. In addition to the compound 5_h, are new smectic liquid crystal compounds. They have a wider phase transition temperature range and higher thermal stability. Their phase behavior was investigated by polarized light microscopy and differential thermal analyzer, and the influence of molecular structure on the phase behavior was discussed.