液晶与显示2017，Vol.32Issue(11)：861-867,7.DOI:10.3788/YJYXS20173211.0861
低熔点高Δn值双环向列相液晶的合成研究
Synthesis of two-ring nematic phase liquid crystal compounds with low melting point and high Δn value
摘要
Abstract
In order to develop liquid crystal materials with low melting point,high birefringence (Δn) and fast response ,we need to join in double ring type LC compounds with the low melting point under 50 ℃ and the Δ n value with more than 0 .35 in high Δn values of the liquid crystal mixture system , which can make fast response nematic phase liquid crystal materials meet the requirements of working at room temperature .The liquid crystal compounds of isothiocyanate diphenylacetylene were designed and synthesized in this paper .By adding the isothiocyanate group at the molecular terminal ,the bire-fringence of the liquid crystal increased .At the same time ,F atom is introduced at the benzene ring side to reduce the viscosity of the liquid crystals .The results showed that the two target compounds'Δn value were 0 .39 and 0 .4 ,and the melting points were 31 ℃ and 50 ℃ ,respectively ,which would decrease the melting point of the present liquid crystals with a few milliseconds in response time as low as 10 ℃ .关键词
低熔点/高双折射率/异硫氰基/合成Key words
low melting point/high birefringence/isothiocyanate/synthetic分类
化学化工引用本文复制引用
李潭,王震,王国华,张智勇,关金涛,戴志群..低熔点高Δn值双环向列相液晶的合成研究[J].液晶与显示,2017,32(11):861-867,7.基金项目
国家自然科学基金(No.61378095 ,No.11374067) Supported by the National Nutural Science Foundation of China (No.61378095 ,No.11374067) （No.61378095 ,No.11374067）
