(4-[(E,E)-hexa-2,4-dienoyloxy]phenyl)-5-pentylthiophene

• 分子结构分类: 有机化合物 - 苯类化合物 - 苯酚酯
• 英文名称: (4-[(E,E)-hexa-2,4-dienoyloxy]phenyl)-5-pentylthiophene
• 英文别名: [4-(5-pentylthiophen-2-yl)phenyl] (2E,4E)-hexa-2,4-dienoate
• 化学式: C₂₁H₂₄O₂S
• 分子量: 340.486
• InChiKey: RYGLOPLCOJCSQT-ONNLMXTPSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  6.8
• 重原子数：
  24
• 可旋转键数：
  9
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.29
• 拓扑面积：
  54.5
• 氢给体数：
  0
• 氢受体数：
  3

反应信息

• 作为产物：
  描述：

  2-溴-5-戊基噻吩 在 4-二甲氨基吡啶 、 三溴化硼 、 N,N'-二环己基碳二亚胺 作用下， 生成 (4-[(E,E)-hexa-2,4-dienoyloxy]phenyl)-5-pentylthiophene
  参考文献：
  名称：

  Nematic 2,5-disubstituted thiophenesElectronic supplementary information (ESI) available: extensive synthetic information. See http://www.rsc.org/suppdata/jm/b2/b202073b/

  摘要：

  制备了大量含有2,5-二取代噻吩环的新型液晶，并研究了它们的介晶行为，以系统地探讨不同形状、极化能力和极性的噻吩衍生物的分子结构与介晶性之间的关联。通过这些研究，我们合成了一类新型液晶，它们含有2,5-二取代噻吩环和末端链中的共轭反式碳-碳双键。这些新颖的噻吩衍生物是首批在室温下表现出向列相的含有2,5-二取代噻吩环的液晶。这使得弯曲形状分子的挠曲电系数能够首次在作者所知的情况下直接在室温下测量。许多这些新型噻吩具有高双折射率和高向列相清亮点，有可能作为液晶显示器中向列相混合物的成分。

  DOI：

  10.1039/b202073b

文献信息

• Nematic Thiophenes for STN-LCDS and Flexoelectric LCDS
  作者：Kevin Bartle、Neil Campbell、Warren L. Duffy、Stephen M. Kelly、Vicki Minter、Mary O'Neill、Rachel P. Tuffin

  DOI：10.1080/10587250108025061

  日期：2001.8

  We report anew class of liquid crystals incorporating a 2,5-disubstituted thiophene ring and one or two conjugated trans-carbon-carbon double bonds in the terminal chain for use as components of nematic mixtures for TN-LCDs and STN-LCDs. The combination of these molecular elements contribute towards generating a high birefringence, a high nematic clearing point as well as a low viscosity for these materials. Several of these compounds exhibit a melting point below room temperature. This is the first time a room temperature nematic phase has been reported for phenyl thiophene derivatives. The new thiophene compounds can be used to induce a high birefringence in nematic mixtures for LCDs with short response times.
• Nematic 2,5-disubstituted thiophenesElectronic supplementary information (ESI) available: extensive synthetic information. See http://www.rsc.org/suppdata/jm/b2/b202073b/
  作者：Neil L. Campbell、Warren L. Duffy、Gareth I. Thomas、Janine H. Wild、Stephen M. Kelly、Kevin Bartle、Mary O'Neill、Vicky Minter、Rachel P. Tuffin

  DOI：10.1039/b202073b

  日期：2002.8.30

  A large number of new liquid crystals incorporating the 2,5-disubstituted thiophene ring have been prepared and their mesomorphic behaviour studied in order to systematically investigate the correlation between the molecular structure and mesomorphism of thiophene derivatives with different shapes, polarisability and polarity. As a consequence of these investigations we have prepared a new class of liquid crystals incorporating a 2,5-disubstituted thiophene ring and a conjugated trans-carbon–carbon double bond in the terminal chain. These novel thiophene derivatives are the first liquid crystals incorporating a 2,5-disubstituted thiophene ring to exhibit a nematic phase at room temperature. This enables the flexoelectric coefficients of a bent-shaped molecule to be measured directly and at room temperature for the first time to the authors' knowledge. Many of these new thiophenes exhibit a high birefringence and a high nematic clearing point and are of potential use as components of nematic mixtures in LCDs.

  制备了大量含有2,5-二取代噻吩环的新型液晶，并研究了它们的介晶行为，以系统地探讨不同形状、极化能力和极性的噻吩衍生物的分子结构与介晶性之间的关联。通过这些研究，我们合成了一类新型液晶，它们含有2,5-二取代噻吩环和末端链中的共轭反式碳-碳双键。这些新颖的噻吩衍生物是首批在室温下表现出向列相的含有2,5-二取代噻吩环的液晶。这使得弯曲形状分子的挠曲电系数能够首次在作者所知的情况下直接在室温下测量。许多这些新型噻吩具有高双折射率和高向列相清亮点，有可能作为液晶显示器中向列相混合物的成分。