Three series of imines containing fluoroalkyl, polyether, alkyl and alkoxy peripheral chains have been prepared. The phase behaviour of the semiperfluorinated compounds has been investigated by optical polarizing microscopy, differential scanning calorimetry and X-ray scattering. The thermal behaviour of the semiperfluorinated imines1–10 depends on the number of chains, the substitution pattern and the number of fluorine atoms in the fluoroalkyl chains. Increasing the number of fluorine atoms in the fluoroalkyl chains leads to a stabilization of smectic and columnar mesophases. The effect of polyether side chains on the mesomorphic behaviour of imine compounds has also been investigated. In addition, first examples of mesogenic copper(II) complexes carrying semiperfluorinated alkyl chains at their peripheries and a palladium complex have been synthesized and their liquid crystalline properties have been investigated.
已制备三系列含氟烷基、聚醚、烷基和烷氧基外围链的亚
氟化
亚胺。通过光偏振显微镜、差示扫描量热法和X射线散射研究了亚
氟化化合物的相行为。亚
氟化
亚胺1-10的热行为依赖于链的数量、取代模式和氟烷基链中
氟原子的数量。增加氟烷基链中
氟原子的数量可使层相和柱状中相得到稳定。此外,还研究了聚醚侧链对
亚胺化合物中相行为的影响。此外,合成了首例在边缘具有亚
氟化烷基链的中间相
铜(II)配合物及一个
钯配合物,并研究了它们的液晶性质。