4,4'-di-n-undecyloxybiphenyl | 21470-45-1

• 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: 4,4'-di-n-undecyloxybiphenyl
• 英文别名: 1-Undecoxy-4-(4-undecoxyphenyl)benzene
• CAS: 21470-45-1
• 化学式: C₃₄H₅₄O₂
• 分子量: 494.802
• InChiKey: XELIEOAZKSLPAN-UHFFFAOYSA-N

物化性质

• 熔点：
  115-116 °C
• 沸点：
  590.3±43.0 °C(Predicted)
• 密度：
  0.928±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  13.6
• 重原子数：
  36
• 可旋转键数：
  23
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.65
• 拓扑面积：
  18.5
• 氢给体数：
  0
• 氢受体数：
  2

反应信息

• 作为产物：
  描述：

  1-溴十一烷 、 4,4'-二羟基联苯 在 potassium carbonate 作用下， 以 N,N-二甲基甲酰胺 为溶剂， 以18%的产率得到4,4'-di-n-undecyloxybiphenyl
  参考文献：
  名称：

  Molecular Mechanism of Anomalous Increase in the Helical Pitch of Cholesteric Liquid Crystals Induced by Achiral Dopants

  摘要：

  A dopant-induced anomalous increase in the helical pitch of dicholesteryl 10,12-docosadiynedioate 1 is explained by generation of smectic clusters in the cholesteric phase where the dopants act as promoters of smectic domains. The dopants, having a mesogenic core and the proper length of alkyl chains on both their molecular sides, such as 4,4'-dialkylazobenzenes, 4,4'-dialkylazoxybenzenes and 4,4'-dialkylbiphenyls, considerably increase the pitch. However, dopants having benzene or a binaphthyl structure in the molecular center, an alkyl chain at one side of the molecules and Z-isomers of azobenzene and azoxybenzene derivatives, slightly decrease the pitch by acting as impurities that decrease the transition temperature of the host. An X-ray diffraction study of the cholesterics revealed that the pitch increases with an increase in size and amount of the smectic domains induced by the appropriate dopants.

  DOI：

  10.1021/jp034916e

文献信息

• New Liquid Crystal Materials with a Terminal Alkyl Sulfonic Acid Unit
  作者：Yuichiro Haramoto、Sachie Koide、Yuki Okubo、Masato Nanasawa、Seiji Ujiie

  DOI：10.1080/154214091002326

  日期：2006.8.1

  New liquid crystal materials with a terminal alkyl sulfonic acid group were synthesized. The mesomorphic behavior of these compounds was evaluated. These compounds generate the SmA phase, and in the SmA phase, the molecules seem to be able to transport protons. At the temperature of the smectic phase, the proton current increased sharply. The proton transport ability increases about 700 times by forming a smectic molecular order.