两端为环戊基类液晶的合成

Synthesis of Dicyclopentyl Liquid Crystals

合成一类新型标题化合物,此类单体液晶在结构上有着独特的新颖性,未见文献报道。以卤代物为起始原料,通过Suzuki反应合成5种结构类似的单体液晶,对其结构进行标定,并对目标液晶单体的性能进行测试。此类单体液晶有着较宽的向列相范围,可以用来拓宽混合液晶的低温向列相范围。此外,此类单体液晶有着较高的光学各向异性(Δn)及适宜的介电各向异性(Δε),可以作为一款通用液晶参与混合液晶的配置。

A new style liquid crystal is synthesized with dicyclopentyl. Seven pyridine liquid crystals are synthesized via Suzuki reaction with halide as raw material and the structures are confirmed. This kind of liquid crystal monomer has a wide range of nematic phase,and it can be used to widening the nematic phase range of liquid crystal mixtures in low temperature. Furthermore,these compounds not only have larger optical anisotropy（ Δn） but also have suitable dielectric anisotropy,they can be deploied in liquid crystals mixture as universal LCD.