2-{[4-(4-pentylcyclohexyl)phenoxy]methyl}oxirane

• 分子结构分类: 有机化合物 - 苯类化合物 - 苯酚醚
• 英文名称: 2-{[4-(4-pentylcyclohexyl)phenoxy]methyl}oxirane
• 英文别名: 2-[[4-(4-Pentylcyclohexyl)phenoxy]methyl]oxirane
• 化学式: C₂₀H₃₀O₂
• 分子量: 302.457
• InChiKey: JSXKKRYDFKAJAN-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  6.5
• 重原子数：
  22
• 可旋转键数：
  8
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.7
• 拓扑面积：
  21.8
• 氢给体数：
  0
• 氢受体数：
  2

反应信息

• 作为产物：
  描述：

  4-(4-pentylcyclohexyl)phenol 、 环氧氯丙烷 以 叔丁醇 为溶剂， 反应 72.0h， 以80%的产率得到2-{[4-(4-pentylcyclohexyl)phenoxy]methyl}oxirane
  参考文献：
  名称：

  Polyether based side-chain liquid crystalline polymers: Anionic polymerization and phase structures

  摘要：

  Side-chain liquid crystalline (SCLC) polyethers with different spacers are successfully synthesized via anionic polymerization for the first time. The molecular weights of the polymers can range up to similar to 53 kg/ mol with M-w/M-r, <1.1. The precise chemical structures including end groups have been characterized by employing Matrix-Assisted Laser Desorption/Ionization-Time of Flight (MALDI-TOF) and the polymerization condition free of side reactions is further discussed. The phase behavior and structures of the polyethers have been investigated by combining various techniques including differential scanning calorimetry (DSC), wide angle X-ray diffraction (WAXD), small angle X-ray scattering (SAXS) and polarized light microscopy (PLM). Two phase transformations are generally observed for each type of SCLC polyethers. Based on 2-dimensional (2D) X-ray patterns of oriented fiber and mechanically sheared samples, the low ordered liquid crystalline phase at high temperature is identified as a SmA phase for both SCLC polyethers. It is found that the polyether with a longer spacer exhibits a complex phase which is a mixture of a HexB phase and a frustrated HexB phase in analogy to smectic antiphase, whereas no such effect occurs for the polymer with a shorter spacer. Only HexB phase is observed for the low temperature phase of this polymer. The difference in phase structures is also revealed in the texture changes of PLM. (C) 2013 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.polymer.2013.09.056

文献信息

• EP0306919A2
  申请人：——

  公开号：EP0306919A2

  公开（公告）日：1989-03-15
• Polyether based side-chain liquid crystalline polymers: Anionic polymerization and phase structures
  作者：Yu Liu、Wei Wei、Huiming Xiong

  DOI：10.1016/j.polymer.2013.09.056

  日期：2013.11

  Side-chain liquid crystalline (SCLC) polyethers with different spacers are successfully synthesized via anionic polymerization for the first time. The molecular weights of the polymers can range up to similar to 53 kg/ mol with M-w/M-r, <1.1. The precise chemical structures including end groups have been characterized by employing Matrix-Assisted Laser Desorption/Ionization-Time of Flight (MALDI-TOF) and the polymerization condition free of side reactions is further discussed. The phase behavior and structures of the polyethers have been investigated by combining various techniques including differential scanning calorimetry (DSC), wide angle X-ray diffraction (WAXD), small angle X-ray scattering (SAXS) and polarized light microscopy (PLM). Two phase transformations are generally observed for each type of SCLC polyethers. Based on 2-dimensional (2D) X-ray patterns of oriented fiber and mechanically sheared samples, the low ordered liquid crystalline phase at high temperature is identified as a SmA phase for both SCLC polyethers. It is found that the polyether with a longer spacer exhibits a complex phase which is a mixture of a HexB phase and a frustrated HexB phase in analogy to smectic antiphase, whereas no such effect occurs for the polymer with a shorter spacer. Only HexB phase is observed for the low temperature phase of this polymer. The difference in phase structures is also revealed in the texture changes of PLM. (C) 2013 Elsevier Ltd. All rights reserved.