(E)-4-(dibutylamino)-4'-nitrostilbene | 122258-50-8

• 分子结构分类: 有机化合物 - 苯丙烷和聚酮 - 二苯乙烯类
• 英文名称: (E)-4-(dibutylamino)-4'-nitrostilbene
• 英文别名: 4-(dibutylamino)-4'-nitrostilbene；N,N-dibutyl-4-[(E)-2-(4-nitrophenyl)ethenyl]aniline
• CAS: 122258-50-8
• 化学式: C₂₂H₂₈N₂O₂
• 分子量: 352.477
• InChiKey: RHUGVNVUYSICTR-BQYQJAHWSA-N

物化性质

• 沸点：
  484.8±24.0 °C(Predicted)
• 密度：
  1.096±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  6.6
• 重原子数：
  26
• 可旋转键数：
  9
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.36
• 拓扑面积：
  49.1
• 氢给体数：
  0
• 氢受体数：
  3

反应信息

• 作为产物：
  描述：

  对硝基溴化苄 在 potassium tert-butylate 作用下， 以 N,N-二甲基甲酰胺 为溶剂， 反应 28.0h， 生成 (E)-4-(dibutylamino)-4'-nitrostilbene
  参考文献：
  名称：

  Dielectric and Fluorescent Probes To Investigate Glass Transition, Melt, and Crystallization in Polyolefins

  摘要：

  Investigation of glass transition dynamics in polyolefins by broadband dielectric spectroscopy (DRS) is facilitated by the addition of a novel dielectric probe, (4,4'-(N,N-dibutylamino)-(E)-nitrostilbene (DBANS), which introduces dipoles and made the polymers dielectrically active. For probe concentrations between 0.1% and 1.0% the dielectric strength Deltaepsilon associated with the dynamic glass transition increases proportionally to the probe concentration. This result indicates that the probe exhibits no intramolecular relaxations, and the probe rotational diffusion effectively senses the "microviscosity" of the probe environment on the length scale of the segmental dynamics. Temperature-dependent fluorescence spectroscopy on doped polymers shows no changes in fluorescence wavelength around the glass transition temperature. Crystallization and melting of the polyolefin matrix results in an increase or decrease of the probe concentration in the amorphous phase, which was clearly detected by real-time fluorescence because the probe emission is sensitive to the probe content, particularly at higher probe concentrations.

  DOI：

  10.1021/ma0305333

文献信息

• New sulfonyl-containing materials for nonlinear optics: semiempirical calculations, synthesis, and properties
  作者：Abraham Ulman、Craig S. Willand、Werner Kohler、Douglas R. Robello、David J. Williams、Laura Handley

  DOI：10.1021/ja00176a001

  日期：1990.9

  In this study the authors describe semiempirical calculations, synthesis, ground-state dipole moment measurements, and measurements of molecular second-order hyperpolarizability coefficients (beta}) for new stilbene and azobenzene derivatives containing a methylsulfonyl group as the electron acceptor. They show that theoretical calculations can be used to predict the trends for molecular hyperpolarizabilities

  在这项研究中，作者描述了含有甲基磺酰基作为电子受体的新二苯乙烯和偶氮苯衍生物的半经验计算、合成、基态偶极矩测量和分子二阶超极化系数 (β}) 的测量。他们表明，理论计算可用于预测相似化合物之间分子超极化的趋势，并且这些气相计算低估了 β} 值，这可能是计算中使用的价基集的结果。尽管已证明砜基团提供的分子超极化率略低于类似硝基化合物的超极化率，但随着共轭度的增加，差异变得更小。
• An optical article containing a transmission medium exhibiting a high level of second order polarization susceptibility
  申请人：EASTMAN KODAK COMPANY (a New Jersey corporation)

  公开号：EP0313475A2

  公开（公告）日：1989-04-26

  An optical article is disclosed containing, for the transmission of electromagnetic radiation, a medium exhibiting a second order polarization susceptibility greater than 10⁻⁹ electrostatic units comprised of polar aligned noncentrosymmetric molecular dipoles having an electron donor moiety linked through a conjugated π bonding system to an electron acceptor moiety to permit oscillation of the molecular dipole between a ground state exhibiting a first dipole moment and an excited state exhibiting a differing dipole moment. The molecular dipoles are held in polar alignment by a crosslinked polymeric binder.

  本发明公开了一种用于传输电磁辐射的光学产品，该产品含有一种介质，该介质显示出大于 10-𠞙 静电单位的二阶偏振电感，该介质由极性排列的非中心对称分子偶极子组成，该分子偶极子具有一个电子供体分子，该电子供体分子通过共轭 π 键系统与一个电子受体分子相连，从而允许分子偶极子在显示第一偶极矩的基态和显示不同偶极矩的激发态之间摆动。分子偶极子通过交联聚合物粘合剂保持极性排列。