气相色谱高温液晶固定液的合成和性能——Ⅳ.双-(4,4′-正烷(氧)基联苯甲酸)对苯二酚和联苯二酚双酯类

Syntheses and Properties of High-Temperature Liquid Crystals as Stationary Phase in Gas Chromatography Ⅳ. Phenylene Bis-(4,4'-alkylbiphenylcarboxylate)

介绍了五个新型的联苯双酯类高温液晶的合成及性质。该类液晶化合物相变温度高(179～>330℃),热稳定性好(>480℃)。将其用作气相色谱固定液,对分离难度较大的萘胺异构体和萘酚异构体,效果良好。

The syntheses and properties of five new high-temperature liquid crystals were discussed. These liquid crystals have higher transition temperatures (179～330℃ ) and stability (480℃). When used as stationary phase in gas chromatography, this kind of liquid crystals gives satisfactory results in the separation of 1- and 2-naphthols, 1- and 2-naphthylamines and purification of industrial anthrancene.