cis-4,4′-bis(2-benzoxazolyl)stilbene | 223465-94-9

• 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: cis-4,4′-bis(2-benzoxazolyl)stilbene
• 英文别名: Fluorescent brightener 393, (Z)-；2-[4-[(Z)-2-[4-(1,3-benzoxazol-2-yl)phenyl]ethenyl]phenyl]-1,3-benzoxazole
• CAS: 223465-94-9
• 化学式: C₂₈H₁₈N₂O₂
• 分子量: 414.463
• InChiKey: ORACIQIJMCYPHQ-KTKRTIGZSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  7.2
• 重原子数：
  32
• 可旋转键数：
  4
• 环数：
  6.0
• sp3杂化的碳原子比例：
  0.0
• 拓扑面积：
  52.1
• 氢给体数：
  0
• 氢受体数：
  4

反应信息

• 作为产物：
  描述：

  4,4'-bis(2-benzoxazolyl)-stilbene 以 氘代氯仿 为溶剂， 反应 4.0h， 生成 cis-4,4′-bis(2-benzoxazolyl)stilbene
  参考文献：
  名称：

  荧光探针4,4'-双（2-苯并恶唑基）二苯乙烯的光物理和电化学研究

  摘要：

  在溶液中，4,4'-双（2-苯并恶唑基）芪（BBS）被发现显示出稳定的高绝对荧光量子产率（Φ FL ≥0.88）和单指数寿命，二者独立BBS浓度。通过不同的技术对BBS稳态和时间分辨光物理进行了研究，以了解各种失活途径。发现通过系统间交叉的BBS单线态激发态的非辐射失活可以忽略不计。除了荧光以外，还发现BBS的激发态通过反式-顺式光异构化而失活。在低浓度（≈5μg/ mL）下，紫外光谱和激光闪光光解显示出一致的结果，即光诱导的顺式异构体逐渐取代了纯反式异构体的原始吸收光谱。然而，在高浓度（≈0.2mg / mL）下，1 H NMR和DOSY测量结果证实，在350 nm处照射BBS可通过光异构化诱导从反式-BBS转化为顺式异构体。进一步发现两种异构体的二苯乙烯部分被光裂解。所得的光产物为醛，其在环境条件下被氧化为其相应的羧酸，即4-（1,3-苯并恶唑-2-基）苯甲酸。通过X射线衍射明确地证实

  DOI：

  10.1021/jp312598c

文献信息

• Corrosion inhibition for aqueous systems using a halogenated triazole
  申请人：CHEMTREAT, INC.

  公开号：US10407778B2

  公开（公告）日：2019-09-10

  A method for inhibiting corrosion of a corrodible metal surface that contacts water in a water system is provided. The method may include introducing into the water a treatment composition including an ex-situ halogenated triazole compound in an amount sufficient for inhibiting corrosion. A method of measuring a concentration of the ex-situ halogenated triazole compound in water in a water system is also provided. The method may include inducing the halogenated triazole compound to fluoresce and measuring an intensity of the fluorescence emitted from the water to determine the concentration of the halogenated triazole compound in the water. The concentration of the halogenated triazole can be monitored and controlled. The concentration of the halogenated triazole can be adjusted to a desired level based on the measured fluorescence value.

  提供了一种抑制与水系统中的水接触的易腐蚀金属表面腐蚀的方法。该方法可包括向水中引入一种处理组合物，该组合物包括一种原位卤化三唑化合物，其用量足以抑制腐蚀。还提供了一种测量水系统中水中原位卤化三唑化合物浓度的方法。该方法可包括诱导卤代三唑化合物发出荧光，并测量从水中发出的荧光强度，以确定水中卤代三唑化合物的浓度。卤代三唑的浓度可以监测和控制。卤代三唑的浓度可以根据测量到的荧光值调整到所需的水平。
• Stabilized sodium chlorite solution and a method of remediating an aqueous system using the solution
  申请人：Martin Roy W.

  公开号：US11235975B2

  公开（公告）日：2022-02-01

  A stable aqueous composition of sodium chlorite and a hydrated borate donor having a pH of greater than 9.0 and the weight percent ratio of sodium chlorite (reported as NaClO2) to hydrated borate donor (reported as the sum of H2O+B2O3) is less than 1.5:1 respectfully. A method of remediating an aqueous system using the stable aqueous composition.

  一种由亚氯酸钠和水合硼酸盐供体组成的稳定的水性组合物，其 pH 值大于 9.0，且亚氯酸钠（以 NaClO2 表示）与水合硼酸盐供体（以 H2O+B2O3 之和表示）的重量百分比比分别小于 1.5:1。一种使用稳定水性组合物修复水性体系的方法。
• CORROSION INHIBITION FOR AQUEOUS SYSTEMS USING A HALOGENATED TRIAZOLE
  申请人：CHEMTREAT, INC.

  公开号：US20170356093A1

  公开（公告）日：2017-12-14

  A method for inhibiting corrosion of a corrodible metal surface that contacts water in a water system is provided. The method may include introducing into the water a treatment composition including an ex-situ halogenated triazole compound in an amount sufficient for inhibiting corrosion. A method of measuring a concentration of the ex-situ halogenated triazole compound in water in a water system is also provided. The method may include inducing the halogenated triazole compound to fluoresce and measuring an intensity of the fluorescence emitted from the water to determine the concentration of the halogenated triazole compound in the water. The concentration of the halogenated triazole can be monitored and controlled. The concentration of the halogenated triazole can be adjusted to a desired level based on the measured fluorescence value.
• POLYMERIC ANTIMICROBIAL SURFACTANT
  申请人：Poly Group LLC

  公开号：US20180362678A1

  公开（公告）日：2018-12-20

  Polycationic polymeric antimicrobial surfactant and polymeric biocompatible antimicrobial surfactant compositions are useful in dispersing various compounds in a carrier liquid. The polycationic polymeric antimicrobial surfactant and polymeric biocompatible antimicrobial surfactant compositions employ polymers having both hydrophilic domains and hydrophobic domains so that the compositions can disperse particles such as polymer particles or droplets in a continuous phase as well as provide stable dispersions that have not been provided before. The antimicrobial properties of the compositions provide much-needed capabilities of fighting infectious agents such as bacteria and viruses in a wide spectrum of products such as paint, adhesives, and coatings. Methods of using these compositions as well as methods of making products using the compositions are disclosed.
• PHOTOTHERAPY DEVICE AND SYSTEM
  申请人：Powell Patrick Kenneth

  公开号：US20200164221A1

  公开（公告）日：2020-05-28

  A ring has an open top side and side walls that circumscribe a central region for receiving a phototherapy subject. The side walls include a work surface that is configured to receive visible light through the open top side and reflect the visible light toward the central region for phototherapy. The work surface includes a first surface that is a diffuse reflector and a second surface that is a spectral reflector.