4'-(6-bromooctyloxy)biphenyl-4-carbonitrile | 140713-88-8

• 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'-(6-bromooctyloxy)biphenyl-4-carbonitrile
• 英文别名: 4'-(8-bromooctyloxy)biphenyl-4-carbonitrile；4'-[(8-bromooctyl)oxy]-1,1'-biphenyl-4-carbonitrile；4′-[(8-bromooctyl)oxy]-1,1′-biphenyl-4-carbonitrile；4-cyano-4'-(8-bromooctyloxy)biphenyl；4'-(8-bromooctyloxy)-4-cyanobiphenyl；4-[4-(8-Bromooctoxy)phenyl]benzonitrile
• CAS: 140713-88-8
• 化学式: C₂₁H₂₄BrNO
• 分子量: 386.332
• InChiKey: LBRPFXGVDCCIHG-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  6.5
• 重原子数：
  24
• 可旋转键数：
  10
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.38
• 拓扑面积：
  33
• 氢给体数：
  0
• 氢受体数：
  2

反应信息

• 作为反应物：
  描述：

  4'-(6-bromooctyloxy)biphenyl-4-carbonitrile 在 potassium carbonate 作用下， 以 环己酮 为溶剂， 反应 21.0h， 生成 4,4'-bis(8-(2-(8-(4-(cyanophenyl)phenyloxy)octyloxy)phenyloxy)octyloxy)biphenyl
  参考文献：
  名称：

  Molecular Organization of Preorganized S-Shaped Oligomers in the Liquid Crystalline Phases

  摘要：

  We prepared a homologous series of S-shaped oligomers, 4,4'-bis(omega-(2-(omega-(4-(cyanophenyl)phenyloxy)alkyloxy)phenyloxy)alkyloxy)biphenyl [I-(m,n)], and investigated effects of the spacer length on the phase transition behavior. I-(7,7), I-(8,8), I-(9,9) and I-(7,9) showed nematic (N) and smectic A (SmA) phases, whereas I-(6,6) and I-(6,9) showed only an N phase. The melting behavior was found to depend on the parity of the spacer (m). The liquid-crystalline phases of I-(8,8) and I-(6,9) are monotropic, however, those of I-(9,9) and I-(7,9) are enantiotropic. X-ray diffraction measurements of I-(7,7), I-(8,8) and I-(7,9) indicate that the S-shaped oligomers exist as a close-packed structure in the monolayer SmA phase.

  DOI：

  10.1080/15421400903054527
• 作为产物：
  描述：

  4-(8-hydroxyoctyloxy)-4'-cyanobiphenyl 在 三乙胺 、 lithium bromide 作用下， 以 氯仿 、 丙酮 为溶剂， 生成 4'-(6-bromooctyloxy)biphenyl-4-carbonitrile
  参考文献：
  名称：

  액정 화합물 및 이를 포함하는 쌍안정 액정 패널

  摘要：

  本申请涉及液晶化合物、包括其在双稳态液晶面板中的应用及其用途。根据本申请的液晶化合物可在形成液晶层的液晶组分中包含，能够提供适合双稳态液晶面板应用的相变温度和导电性质。这种液晶化合物可以应用于双稳态液晶面板和包括该面板的各种光调制装置等，以降低驱动电压。

  公开号：

  KR102069479B1

文献信息

• Tuning the miscibility of gold nanoparticles dispersed in liquid crystals via the thiol-for-DMAP reaction
  作者：Jonathan Milette、Violeta Toader、Linda Reven、R. Bruce Lennox

  DOI：10.1039/c1jm10553a

  日期：——

  Ligand exchange reactions using 4–5 nm 4-(N,N-dimethylamino)pyridine (DxMAP)-capped gold nanoparticles (AuNPs) formed the basis for synthesizing a family of liquid crystal (LC)-capped NPs for a rationalized miscibility in liquid crystal matrices. NPs with ligand capping layers composed of CH3(CH2)mSH (m = 5, 11) or 4′-(n-mercaptoalkyloxy)biphenyl-4-carbonitriles (CBO(CH2)nSH, n = 8, 12, 16) and their binary mixtures were prepared. The miscibility of the NPs in liquid crystals is found to be sensitive to the ligand chain length and the density of the LC ligands within the capping layers. Polarized optical microscopy and UV-vis data show that the NPs with only CH3(CH2)mSH ligands are either immiscible or only partially disperse in the isotropic phases of 4-n-pentyl-4′-cyanobiphenyl (5CB) and 4-n-octyl-4′-cyanobiphenyl (8CB). NPs with CBO(CH2)nSH (n = 8, 12, 16) ligands or mixed CH3(CH2)5SH/CBO(CH2)12SH ligand shells containing 28% or 70% CBO(CH2)12SH ligand content partly disperse. However, NPs with a 1 : 1 CH3(CH2)5SH/CBO(CH2)12SH ratio are completely miscible in isotropic 5CB up to at least 25 wt% Au. In general, the derivatization methodology developed here for mesogenic ligands provides in a complementary approach to thiol-for-thiol exchange for designing bifunctional AuNPs, offering the advantages of high reproducibility, access to a wide composition range and no need for large excesses of valuable functionalized ligand.

  使用4-5 nm 4-(N,N-二甲氨基)吡啶（DxMAP）封端的金纳米颗粒（AuNPs）进行的配体交换反应，作为合成一系列液晶（LC）封端纳米颗粒的基础，以实现液晶基质中的合理混溶性。制备了配体封端层由CH3(CH2)mSH（m = 5, 11）或4′-(n-巯基烷氧基)联苯-4-碳腈（CBO(CH2)nSH, n = 8, 12, 16）及其二元混合物构成的纳米颗粒。研究发现，纳米颗粒在液晶中的混溶性对配体链长和封端层中液晶配体的密度非常敏感。偏振光学显微镜和紫外可见光数据表明，仅有CH3(CH2)mSH配体的纳米颗粒在4-n-戊基-4′-氰基联苯（5CB）和4-n-辛基-4′-氰基联苯（8CB）的各向同性相中要么不相溶，要么仅部分分散。含有CBO(CH2)nSH（n = 8, 12, 16）配体的纳米颗粒或包含28%或70% CBO(CH2)12SH配体的混合CH3(CH2)5SH/CBO(CH2)12SH配体壳的纳米颗粒部分分散。然而，配比为1:1的CH3(CH2)5SH/CBO(CH2)12SH纳米颗粒在各向同性5CB中可完全混溶，高达至少25 wt%的金。总的来说，这里开发的用于介晶配体的衍生化方法论为设计双功能金纳米颗粒提供了一种互补的方法，相较于硫醇对硫醇的交换，具有高重复性、广泛的成分范围，且无需大量过量的宝贵功能化配体的优点。
• 一种手性光敏掺杂剂及其制备方法与应用
  申请人：华南师范大学

  公开号：CN113511987A

  公开（公告）日：2021-10-19

  本发明公开了一种手性光敏掺杂剂及其制备方法与应用，该光敏掺杂剂中包含有光敏基团，光敏基团为大位阻烯烃结构，同时大位阻烯烃结构具有点手性及轴手性；大位阻烯烃结构作为光响应型手性材料动态调控液晶的螺旋结构，通过光异构化实现了分子内螺旋性反转，从而赋予了胆甾相液晶螺旋结构手性反转的能力。与相关技术相比，以大位阻烯烃结构为基础的手性光敏掺杂剂，具有更高的可设计性和可操作性，从而实现了体系的多功能动态调控。此外，本发明的制备原料来源简单，价格便宜，合成方法相对简单，非常适用于工业化生产。
• Optically Biaxial, Re-entrant and Frustrated Mesophases in Chiral, Non-symmetric Liquid Crystal Dimers and Binary Mixtures
  作者：Vediappen Padmini、Palakurthy Nani Babu、Geetha G. Nair、D. S. Shankar Rao、Channabasaveshwar V. Yelamaggad

  DOI：10.1002/asia.201600918

  日期：2016.10.20

  spacer, were synthesized and characterized. While the terminal chiral tail, in the form of either (R)‐2‐octyloxy or (S)‐2‐octyloxy chain attached to salicylaldimine core, was held constant, the number of methylene units in the spacer was varied from 3 to 10 affording eight pairs of (R & S) enantiomers. They were probed for their thermal properties with the aid of orthoscopy, conoscopy, differential scanning

  合成并表征了十六种旋光性，非对称二聚体，其中氰基联苯和水杨醛亚胺的液晶元通过柔性间隔基相互连接。尽管末端手性尾巴（以（R）-2-辛氧基或（S）-2-辛氧基链形式连接至水杨醛亚胺核心）保持恒定，但间隔基中的亚甲基单元数从3变为10提供八对（R＆S）对映异构体。借助矫形镜，锥形镜，差示扫描量热法和X射线粉末衍射对它们的热性能进行了探测。此外，使用手性和非手性二聚体进行了二元混合物研究，其目的是稳定光学双轴相/秒，折返相和重要的相序。值得注意的是，手性二聚体之一和某些混合物表现出双轴近晶A（SmA b）相出现在单轴SmA和折返单轴SmA相之间。在大多数二聚体和混合物中也发现了中间相，例如手性向列相（N *）和受挫相，即蓝相（BPs）和扭曲晶界（TGB）相。X射线衍射研究表明，具有氧丁氧基和氧戊氧基间隔基的二聚体显示出相互交叉的（SmA d）相，其中近晶周期性是分子长度的1.4倍以上。而在插值SmA（SmA
• Liquid crystalline epoxy resin with improved thermal conductivity by intermolecular dipole-dipole interactions
  作者：Iseul Jeong、Chae Bin Kim、Dong-Gue Kang、Kwang-Un Jeong、Se Gyu Jang、Nam-Ho You、Seokhoon Ahn、Dai-Soo Lee、Munju Goh

  DOI：10.1002/pola.29315

  日期：2019.3.15

  of liquid crystalline epoxy resins (LCEs) are designed and synthesized as thermally conductive matrix. All prepared LCEs possess epoxies at the molecular side positions and cyanobiphenyl mesogenic end groups. Based on several experimental results such as differential scanning calorimetry, polarized optical microscopy, and X‐ray diffraction, it is found that the LCEs exhibited liquid crystalline mesophases

  为了满足开发轻量级散热材料的巨大需求，设计并合成了一系列液晶环氧树脂（LCE）作为导热基体。所有制备的LCE在分子侧位置和氰基联苯介晶端基均具有环氧树脂。基于差示扫描量热法，偏振光学显微镜和X射线衍射等实验结果，发现LCE表现出液晶中间相。当LCE用二胺交联剂固化时，固化的LCE保持未固化状态下形成的定向LC结构域，这归因于氰基联苯介晶端基之间存在偶极-双齿和π-π相互作用。由于各向异性分子取向，固化的LCE表现出0.46 W m的高热导率-1 K -1，比市售的结晶或无定形环氧树脂高。©2018 Wiley Periodicals，Inc.J.Polym。科学，A部分：Polym。化学 2019，57，708-715
• A nanophase segregated mesophase morphology in self-organized novel disc–rod oligomesogens
  作者：Hari Krishna Bisoyi、V. A. Raghunathan、Sandeep Kumar

  DOI：10.1039/b911383e

  日期：——

  A nanophase segregated layered phase (SmA) with alternating calamitic and discotic layers was observed for the first time in novel linked disc–rod oligomesogens, containing six cyanobiphenyl moieties radially-attached to a central tricycloquinazoline discotic heteroaromatic core via flexible alkyl spacers.

  首次在新型链接盘ârod 寡聚异构体中观察到了具有交替菖蒲层和盘状层的纳米相分离分层相（SmA），该分层相含有六个氰基联苯分子，通过柔性烷基间隔径向连接到中央三环喹唑啉盘状杂芳香族核心。