4-biphenyl 3,5-diaminobenzoate | 136951-59-2

• 分子结构分类: 有机化合物 - 苯丙烷和聚酮 - 缩酚酸和缩酚酸环醚类
• 英文名称: 4-biphenyl 3,5-diaminobenzoate
• 英文别名: [1,1'-Biphenyl]-4-yl 3,5-diaminobenzoate；(4-phenylphenyl) 3,5-diaminobenzoate
• CAS: 136951-59-2
• 化学式: C₁₉H₁₆N₂O₂
• 分子量: 304.348
• InChiKey: PGPHYPVULCSMMV-UHFFFAOYSA-N

物化性质

• 熔点：
  171-173 °C(Solv: ethanol (64-17-5))
• 沸点：
  575.4±50.0 °C(Predicted)
• 密度：
  1.253±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  3.6
• 重原子数：
  23
• 可旋转键数：
  4
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.0
• 拓扑面积：
  78.3
• 氢给体数：
  2
• 氢受体数：
  4

反应信息

• 作为产物：
  描述：

  3,5-双-boc-氨基苯甲酸 在 4-二甲氨基吡啶 、 对甲苯磺酸 、 N,N'-二环己基碳二亚胺 作用下， 以 四氢呋喃 、 N-甲基吡咯烷酮 、 二氯甲烷 为溶剂， 反应 36.0h， 生成 4-biphenyl 3,5-diaminobenzoate
  参考文献：
  名称：

  Liquid Crystal Alignment Properties on Polyamide Films Bearing a Phenylenediacryloyl Moiety in the Main Chain

  摘要：

  Soluble photosensitive polyamide, which has a photoreactive 1,4-phenylenediacryloyl (PDA) moiety in the main chain with biphenyl side groups, was synthesized with high molecular weights. The polymer produced high quality films through conventional spin-casting and dry processing with relatively good thermal stability. The photochemical reactions of the polyamide in the films were investigated by UV-Vis spectroscopy; the polymer in the film demonstrated excellent photoreactivity to UV light. Linearly polarized ultra-violet light (LPUVL) irradiation induced anisotropic reorientations of the polymer chains in the film as a result of direction-selective photoreaction of the PDA moieties. The polyamide thin films were found to have excellent unidirectional orientation ability as a result of photo-exposure with LPUVL; the direction-selective photoreaction of the PDA moiety in the main chains induced alignment of nematic liquid-crystals (LCs) on the surface. The pretilt behaviors of the LC molecules on the LPUVL irradiated film surfaces were controlled by both the exposure dose of LPUVL and the annealing temperature.

  DOI：

  10.1080/15421406.2012.687889

文献信息

• Liquid Crystal Alignment Properties on Polyamide Films Bearing a Phenylenediacryloyl Moiety in the Main Chain
  作者：Se Jin Kwon、Boknam Chae、Joo Young Kim、Woo-Sik Jung、Seung Woo Lee

  DOI：10.1080/15421406.2012.687889

  日期：2012.9.5

  Soluble photosensitive polyamide, which has a photoreactive 1,4-phenylenediacryloyl (PDA) moiety in the main chain with biphenyl side groups, was synthesized with high molecular weights. The polymer produced high quality films through conventional spin-casting and dry processing with relatively good thermal stability. The photochemical reactions of the polyamide in the films were investigated by UV-Vis spectroscopy; the polymer in the film demonstrated excellent photoreactivity to UV light. Linearly polarized ultra-violet light (LPUVL) irradiation induced anisotropic reorientations of the polymer chains in the film as a result of direction-selective photoreaction of the PDA moieties. The polyamide thin films were found to have excellent unidirectional orientation ability as a result of photo-exposure with LPUVL; the direction-selective photoreaction of the PDA moiety in the main chains induced alignment of nematic liquid-crystals (LCs) on the surface. The pretilt behaviors of the LC molecules on the LPUVL irradiated film surfaces were controlled by both the exposure dose of LPUVL and the annealing temperature.