We synthesized novel liquid crystalline molecules that contain a bis(biphenyl)diacetylene mesogen and confirmed their structures by 1H NMR, 13C NMR, and FT-IR spectroscopy and mass spectrometry. These compounds formed thermotropic liquid crystals in a wide temperature region that was well characterized by optical microscopic and X-ray measurements.
我们合成了含有双(联苯)二炔介质的 novel 液晶分子,并通过 1H NMR、13C NMR、傅里叶变换红外光谱(FT-IR)和质谱确认了它们的结构。这些化合物在一个广泛的温度范围内形成了热致液晶,并通过光学显微镜和 X 射线测量进行了良好的表征。
Trends in the nematic–isotropic liquid transition temperatures for the homologous series of 4-n-alkoxy- and 4-n-alkyl-4′-cyanobiphenyls
作者:George W. Gray、Alan Mosley
DOI:10.1039/p29760000097
日期:——
the series of 4-n-alkoxy- and 4-n-alkyl-4′-cyanobiphenyls have been prepared and their liquid crystal transitiontemperatures determined. The trends in the nematic–isotropicliquid (N–I) transitiontemperatures along the series are compared with observed trends for other homologousseries. These results reveal deficiencies in the theoretical treatments that have been proposed to explain trends in N–I