2,3-difluoro-4-(4-hexylphenyl)-1-(4-hydroxyphenyl)benzene | 160919-99-3

• 分子结构分类: 有机化合物 - 苯类化合物 - 苯和取代衍生物
• 英文名称: 2,3-difluoro-4-(4-hexylphenyl)-1-(4-hydroxyphenyl)benzene
• 英文别名: 2,3-difluoro-4-(4-hydroxyphenyl)-1-(4-hexylphenyl)benzene；4-(4-hexylphenyl)-1-(4-hydroxyphenyl)-2,3-difluorobenzene；4-[2,3-difluoro-4-(4-hexylphenyl)phenyl]phenol
• CAS: 160919-99-3
• 化学式: C₂₄H₂₄F₂O
• 分子量: 366.451
• InChiKey: CZGZMMPKZOTSMJ-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  7.13
• 重原子数：
  27.0
• 可旋转键数：
  7.0
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.25
• 拓扑面积：
  20.23
• 氢给体数：
  1.0
• 氢受体数：
  1.0

反应信息

• 作为反应物：
  描述：

  2,3-difluoro-4-(4-hexylphenyl)-1-(4-hydroxyphenyl)benzene 在 4-二甲氨基吡啶 、 potassium carbonate 、 N,N'-二环己基碳二亚胺 、 potassium hydroxide 作用下， 以 乙醇 、 二氯甲烷 、 水 、 环己酮 为溶剂， 反应 37.0h， 生成 4-(4-cyanophenyl)phenyl 4-octyloxy-2-{11-{4-[4-(4-hexylphenyl)-2,3-difluorophenyl]phenyloxy}undecanoyloxy}benzoate
  参考文献：
  名称：

  Structure-Property Relationships in Non-Chiral Liquid Crystal Oligomers Stabilizing Blue Phases

  摘要：

  We prepared 4-(4-cyanophenyl)phenyl 4-octyloxybenzoate derivatives possessing a laterally attached mesogen and investigated their phase transition behavior. They showed a wide temperature range of a nematic phase in spite of being far from a rod-like structure. Each oligomer was found to induce blue phases in the mixture with a conventional chiral smectic liquid crystal. A binary mixture of 4-(4-cyanophenyl)phenyl 4-octyloxy-2-}11-}4-[2-(4-hexyloxyphenypyrimidin-5-yl)phenyloxy]decanoyloxy}benzoate and the chiral compound exhibited a blue phase III with the temperature range of 21K on cooling.

  DOI：

  10.1080/15421400903065697

文献信息

• Biphenyl derivative stabilizing blue phases
  作者：Yutaro Kogawa、Tetsu Hirose、Atsushi Yoshizawa

  DOI：10.1039/c1jm13299g

  日期：——

  After preparing a biphenyl derivative possessing two 2,3-difluoro-1,4-diphenylbenzene units, we investigated its phase transition behaviour. It showed a phase sequence of isotropic liquid–nematic phase–anticlinic smectic C phase. A mixture with a chiral additive with a high twisting power exhibited a cubic blue phase and/or an amorphous blue phase III (BPIII). The compound doped with 10 wt% of the chiral additive showed a phase sequence of Iso 85.4 °C BPIII 70.6 °C cubic BP 47.3 °C chiral nematic 37.3 °C unidentified smectic phase. We investigated electro-optical switching in BPIII and in the cubic BP of the mixture. Transmittance without an applied electric field in the BPIII was 0%, whereas that in the cubic BP was 4.6%. Threshold and driving voltages in the BPIII are lower than in the cubic BP. Furthermore, the BPIII exhibits no voltage-induced hysteresis effects on transmittance. Amorphous BPIII has superior potential for use in next-generation displays.

  在制备出具有两个 2,3-二氟-1,4-二苯基苯单元的联苯衍生物后，我们对其相变行为进行了研究。它呈现出各向同性液相-向列型相-抗折射共晶 C 相的相序。含有高扭曲力手性添加剂的混合物显示出立方蓝相和/或无定形蓝相 III（BPIII）。掺杂了 10 wt%手性添加剂的化合物显示出 Iso 85.4 ℃ BPIII 70.6 ℃ 立方 BP 47.3 ℃ 手性向列相 37.3 ℃ 未识别的共晶相的相序。我们研究了混合物中 BPIII 和立方 BP 的电光转换。在没有外加电场的情况下，BPIII 的透射率为 0%，而立方 BP 的透射率为 4.6%。BPIII 的阈值电压和驱动电压均低于立方体 BP。此外，BPIII 在透射率上没有电压引起的滞后效应。非晶 BPIII 具有在下一代显示器中使用的巨大潜力。
• Interlayer Interactions Induced by Amphiphilicities of a Rod-Like Molecule Produce Frustrated Structures in Conventional Calamitic Phases
  作者：Atsushi Yoshizawa、Ayumi Nishizawa、Kazuhito Takeuchi、Yoichi Takanishi、Jun Yamamoto

  DOI：10.1021/jp106269m

  日期：2010.10.28

  We prepared a rod-like molecule, 4-[4-(7-hydroxyheptyloxy)phenyl]-1-(4-hexylphenyl)-2,3-difluorobenzene, and investigated its physical properties using polarized optical microscopy (POM), differential scanning calorimetry (DSC), and X-ray diffraction (XRD). The compound was found to exhibit nematic, smectic A, and smectic C phases. A smectic-like layer ordering was detected using XRD at low temperatures of the nematic phase. The nematic phase changed to a smectic A phase when cooled, with no accompanying enthalpy change. Analyses using XRD and POM revealed that the smectic C phase consists of three states: conventional SmC with a monolayered structure, monolayered SmC' possessing an additional weak bilayered character, and SmC '' possessing both monolayered and bilayered structures. Furthermore, a discontinuous increase in birefringence of a homeotropically aligned sample of the compound was observed in the SmC '' phase. Interlayer interactions organized by hydrophobic-hydrophilic amphiphilicity and orthogonal-tilt amphiphilicity are discussed to explain the appearance of the unusual liquid-crystalline phases with a hierarchical structure.