以3-氨基-2-甲基苯甲酸为原料,合成了含希夫碱基团的5个不对称弯曲型液晶分子,通过1H NMR、HRMS测试手段对其结构进行了表征,采用示差扫描量热法(DSC)和偏光显微镜等方法研究了它们的液晶性和相变温度,发现不仅相变温度随着分子苯环数的下降而下降,其液晶相的稳定性也随着苯环数的下降而下降,含有5个苯环的化合物呈现多个近晶相和向列相,含4个苯环的化合物则只有一个近晶相和向列相,而3个环的化合物仅在降温的过程中呈现近晶相.
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