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以4-烷基环已烷甲酸为原料,通过简单的合成路线合成了7个化合物。用红外光谱和核磁共振谱仪确定了这些化合物的结构。用偏光显微镜及DSC仪确定了5个化合物是向列相液晶,并测定了它们的相交温度。讨论了化合物的分子结构对相变温度的影响。
Using 4-alkylcyclohexanecarboxylic acid as raw material, 7 compounds were synthesized by a simple synthetic route. The structures of these compounds were confirmed by infrared spectroscopy and nuclear magnetic resonance spectroscopy. Five compounds were identified as nematic liquid crystals by using a polarizing microscope and a DSC instrument. Their interlacing temperatures were measured. The influence of the molecular structure of the compound on the phase transition temperature was discussed.