4-(7,7,8,8,9,9,10,10,10-nonafluorodecyloxy)biphenyl-4'-carboxylic acid | 1197002-47-3

• 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: 4-(7,7,8,8,9,9,10,10,10-nonafluorodecyloxy)biphenyl-4'-carboxylic acid
• CAS: 1197002-47-3
• 化学式: C₂₃H₂₁F₉O₃
• 分子量: 516.404
• InChiKey: WMOZBFUUZIOMQX-UHFFFAOYSA-N

反应信息

• 作为反应物：
  描述：

  4-(7,7,8,8,9,9,10,10,10-nonafluorodecyloxy)biphenyl-4'-carboxylic acid 在 草酰氯 、 N,N-二甲基甲酰胺 作用下， 反应 4.0h， 生成 4'-(7,7,8,8,9,9,10,10,10-nonafluorodecyloxy)biphenyl-4-carbonyl chloride
  参考文献：
  名称：

  Novel liquid-crystalline mesogens and main-chain chiral smectic thiol-ene polymers based on trifluoromethylphenyl moieties

  摘要：

  描述了一系列含有三氟甲基苯核心或2,3-双（三氟甲基）苯核心的新型液晶分子的合成与表征。所有含三氟甲基苯的化合物（W530、W551和W558）均具有介观性质，而含2,3-双（三氟甲基）苯的化合物（W555、W556、W557）则为室温晶体，无介观相。此后，基于W558的化学结构，为追求在SmA*相中具有大电场效应的介晶，以开发成机电致动器为目标，合成了手性近晶硫醇-烯单体（K0901）并将其在有机溶剂中聚合。通过GPC、DSC、PLM和XRD对该聚合物进行了表征，显示出预期的I-SmA*-玻璃相序列，尽管电场效应相对较小。

  DOI：

  10.1039/b907907f
• 作为产物：
  描述：

  ethyl 4-(7,7,8,8,9,9,10,10,10-nonafluorodecyloxy)biphenyl-4'-carboxylate 在 sodium hydroxide 作用下， 以 乙醇 为溶剂， 反应 12.0h， 以90%的产率得到4-(7,7,8,8,9,9,10,10,10-nonafluorodecyloxy)biphenyl-4'-carboxylic acid
  参考文献：
  名称：

  The analysis of temperature effect on frequency dependent dielectric parameters of semifluorinated liquid crystalline biphenyl carboxylic acid

  摘要：

  In this study, the dielectric properties of the liquid crystal 4-(7,7,8,8,9,9,10,10,10-nonafluorodecyloxy)biphenyl-4'-carboxylic acid (NBCA) exhibiting a Smectic C mesophase have been analyzed. NBCA has two critical temperatures which are 194 degrees C for the crystal phase to the smectic phase transition, and 269 degrees C for the smectic phase to the isotropic phase transition. Impedance spectroscopy measurements were made at regular intervals at different temperatures which includes these transitions. By using capacitance method, the complex dielectric constants have been calculated for each temperature, and the real part of dielectric constants have been fitted to the Cole-Cole equation. In addition, ac conductivity mechanisms of the NBCA at different temperatures and different phases and also activation energies which belongs to some selected frequencies have been determined by the imaginary part of dielectric constants.

  DOI：

  10.1016/j.physb.2018.10.037