Twist bend nematic liquid crystals prepared by one-step condensation of 4-(4-Pentylcyclohexyl) benzoic acid and alkyl diol
Twist bend nematic liquid crystals prepared by one-step condensation of 4-(4-Pentylcyclohexyl) benzoic acid and alkyl diol
复制标题
4-(4-戊基环己基)苯甲酸与烷基二醇一步缩合制备扭转弯曲向列液晶
DOI：
10.1080/02678292.2018.1435830
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发表时间：
2018
期刊：
影响因子：
2.2
通讯作者：
Tokita Masatoshi
中科院分区：
文献类型：
--
作者：
Watanabe Kazuki;Tamura Tasuku;Kang Sungmin;Tokita Masatoshi
采用4-（4-戊基环己基）苯甲酸和烷基二醇一步缩合的方法合成了扭弯向列相9OCCHP5和11OCCHP5二聚体，收率高达80%。虽然每种二聚体仅在4℃的狭窄温度宽度下形成ntb相，但它们的等重量混合物在加热和冷却过程中都形成了ntb相，呈现椭圆多边形畴和绳状光学织构。随着温度的降低，ntb温度范围在29 ~ 38℃之间变宽，取向序参数从0.39显著降低到0.29。
Twist bend nematic (NTB)-forming 9OCCHP5 and 11OCCHP5 dimers were synthesised by one-step condensation of 4-(4-pentylcyclohexyl) benzoic acid and alkyl diol with yields as high as 80%. Although each dimer formed the NTBphase only during the cooling process in a narrow temperature width as large as 4°C, their equiweight mixture formed an NTBphase during both the heating and cooling processes, displaying elliptical polygonal domains and rope-like optical texture. The NTBtemperature range became wider by 29–38°C and reduced the orientational order parameter significantly from 0.39 to 0.29 with decreasing temperature.