4'-[5-(1,1,3,3-tetramethyl-disiloxanyl)-pentyloxy]biphenyl-4-carbonitrile | 367272-97-7

• 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'-[5-(1,1,3,3-tetramethyl-disiloxanyl)-pentyloxy]biphenyl-4-carbonitrile
• 英文别名: 4-cyano-4'-[5-(1,1,3,3-tetramethyldisiloxan-1-yl)pentyloxy]biphenyl；4'-(5-tetramethyldisiloxypentenyloxy)-4-cyanobiphenyl；4'-[5-(1,1,3,3-Tetramethyl-disiloxanyl)-pentyloxy]-biphenyl-4-carbonitrile；4-[4-[5-[dimethylsilyloxy(dimethyl)silyl]pentoxy]phenyl]benzonitrile
• CAS: 367272-97-7
• 化学式: C₂₂H₃₁NO₂Si₂
• 分子量: 397.665
• InChiKey: PGKBQSLNAXIIJO-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  5.98
• 重原子数：
  27
• 可旋转键数：
  10
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.41
• 拓扑面积：
  42.2
• 氢给体数：
  0
• 氢受体数：
  3

反应信息

• 作为反应物：
  描述：

  4'-[5-(1,1,3,3-tetramethyl-disiloxanyl)-pentyloxy]biphenyl-4-carbonitrile 、 pent-4-enoic acid 1H,1H,12H,12H perfluoro-pent-4-enoyloxy-dodecyl ester 在 chloroplatinic acid 1,1,3,3-tetramethyl-1,3-divinyldisiloxane complex 作用下， 以 四氢呋喃 为溶剂， 以29%的产率得到
  参考文献：
  名称：

  Polyphilic Multicomponent Dimers with Perfluorinated Cores

  摘要：

  The linking of segments, which have a tendency to phase separate at suitable temperatures, by covalent bonding has been employed in the synthesis of inorganic-organic hybrids. This approach can be utilised to tailor the stability range and the properties (eg viscosity) of liquid crystal materials. Research. into such materials has focused strongly on the combination of calamitic moieties and silicones, however the introduction of a third phase separating segment, of which perfluorinated carbon chains are a good example, is an attractive area of research. In this paper we will report the synthesis and characterisation of materials incorporating a range of calamitic mesogens. These are attached either terminally or laterally to flexible linear chains containing alkyl and siloxane units fused to a central perfluorinated chain. The phase behaviour of the investigated materials is characterised by nematic and smectic phases with transition temperatures close to ambient. The size of the different linear units was varied systematically in order to investigate their contribution to the mesomorphic phase behaviour. The liquid-crystalline properties, investigated by optical polarising microscopy, differential scanning calorimetry and X-ray diffraction will be discussed.

  DOI：

  10.1080/15421400490435026
• 作为产物：
  描述：

  氰基联苯酚 在 铂(0)-1,3-二乙烯-1,1,3,3-四甲基二硅氧烷 、 potassium carbonate 、 potassium iodide 作用下， 以 甲苯 、 丁酮 为溶剂， 生成 4'-[5-(1,1,3,3-tetramethyl-disiloxanyl)-pentyloxy]biphenyl-4-carbonitrile
  参考文献：
  名称：

  The design and investigation of porphyrins with liquid crystal properties at room temperature

  摘要：

  本文描述了一系列卟啉的设计、合成及其在室温下显示出近晶型液晶相行为的研究。这些分子采用模块化方法构建，由卟啉单元通过碳氢化合物和硅氧烷间隔基与棒状氰基联苯单元连接而成。详细讨论了基于光学偏振显微镜、差示扫描量热法和X射线衍射研究的相行为研究。

  DOI：

  10.1039/c2tc00286h

文献信息

• “Janus” Supermolecular Liquid Crystals—Giant Molecules with Hemispherical Architectures
  作者：Isabel M. Saez、John W. Goodby

  DOI：10.1002/chem.200305100

  日期：2003.10.17

  the design of self-assembling functional liquid crystals as segmented or "Janus" liquid-crystalline supermolecular materials in the form of structures that contain two different types of mesogenic units, which favour different types of mesophase structure, grafted onto the same star-shaped scaffold to create supermolecules that contain different hemispheres. The materials exhibit chiral nematic and

  液晶代表了一类独特的自组织系统，尽管在许多日常实际材料应用（例如显示器）中发现了液晶，但它们也与生命过程紧密地交织在一起。就像生活系统一样，它们具有为我们提供开发具有特定功能特性的自定序纳米和介观工程材料的独特工具的潜力。在本文中，我们描述了一种新的概念，用于设计自组装功能液晶，其形式为包含两种不同类型介晶单元的结构形式的分段或“ Janus”液晶超分子材料，这有利于不同类型的中间相结构接枝到相同的星形支架上，以产生包含不同半球的超分子。
• Potochromic liquid crystals
  申请人：Frigoli Michel

  公开号：US20050258396A1

  公开（公告）日：2005-11-24

  The invention relates to novel photochromic liquid crystal materials which may be used in various electro-optic devices including liquid crystal devices. The materials can be converted into another form on irradiation by light which may make it feasible for them to be addressed by light in electro-optic devices. The materials are based on 5-membered heterocycles.

  本发明涉及一种新型光致变色液晶材料，可用于各种电光器件，包括液晶器件。这些材料可以在受到光照射后转化为另一种形式，这使得它们可以被光地址化在电光器件中使用。这些材料基于5元杂环。
• Photochromic liquid crystals
  申请人：Chi Mei Optoelectronics Corporation

  公开号：US07416682B2

  公开（公告）日：2008-08-26

  The invention relates to novel photochromic liquid crystal materials which may be used in various electro-optic devices including liquid crystal devices. The materials can be converted into another form on irradiation by light which may make it feasible for them to be addressed by light in electro-optic devices. The materials are based on 5-membered heterocycles.

  本发明涉及一种新型的光致变色液晶材料，可用于各种电光设备，包括液晶设备。这些材料可以在光照下转化为另一种形式，这可能使它们能够被光在电光设备中寻址。这些材料基于5元杂环。
• Polyphilic Multicomponent Dimers with Perfluorinated Cores
  作者：K. J. Shepperson、T. Meyer、G. H. Mehl

  DOI：10.1080/15421400490435026

  日期：2004.1

  The linking of segments, which have a tendency to phase separate at suitable temperatures, by covalent bonding has been employed in the synthesis of inorganic-organic hybrids. This approach can be utilised to tailor the stability range and the properties (eg viscosity) of liquid crystal materials. Research. into such materials has focused strongly on the combination of calamitic moieties and silicones, however the introduction of a third phase separating segment, of which perfluorinated carbon chains are a good example, is an attractive area of research. In this paper we will report the synthesis and characterisation of materials incorporating a range of calamitic mesogens. These are attached either terminally or laterally to flexible linear chains containing alkyl and siloxane units fused to a central perfluorinated chain. The phase behaviour of the investigated materials is characterised by nematic and smectic phases with transition temperatures close to ambient. The size of the different linear units was varied systematically in order to investigate their contribution to the mesomorphic phase behaviour. The liquid-crystalline properties, investigated by optical polarising microscopy, differential scanning calorimetry and X-ray diffraction will be discussed.
• Effect of Mesophase Order on the Dynamics of Side Group Liquid Crystalline Polymers
  作者：Maria L. Auad、Michael D. Kempe、Julia A. Kornfield、Stanley Rendon、Wesley R. Burghardt、Kyunghwan Yoon

  DOI：10.1021/ma050551f

  日期：2005.8.1

  Rheology and X-ray scattering were employed to probe the viscoclastic properties and structural transitions of model cyano-biphenyl-based side-group liquid-crystalline polymers (SGLCPs) with molecular weights ranging from 91 to 1900 kg/mol. Temperature-dependent rheological data show a rapid change in dynamics over a small temperature range. Small-angle X-ray scattering reveals these changes to be associated with an isotropic to smectic transition with an appreciable biphasic region, The presence of a biphasic region is attributed to inhomogeneity in chain structure resulting from incomplete attachment of mesogens to every monomeric unit in the SGLCP polymer. While isotropic and smectic phase data may be separately time-temperature shifted to create master curves for the individual phases, we argue against attempts to achieve superposition between the two phases in the high-frequency regime, since smectic ordering may not simply slow the dynamics but also increase the modulus of the sample. Molecular weight has a strong influence on rheology in the isotropic phase, where an entanglement plateau emerges; however, the smectic-phase rheology is dominated by the layer structure and is fairly insensitive to molecular weight.