7-ω-sulfo-n-butoxy-coumarin potassium salt | 1235309-18-8

• 分子结构分类: 有机化合物 - 苯丙烷和聚酮 - 香豆素及其衍生物
• 英文名称: 7-ω-sulfo-n-butoxy-coumarin potassium salt
• CAS: 1235309-18-8
• 化学式: C₁₃H₁₃O₆S*K
• 分子量: 336.407
• InChiKey: AJBJMKJYKYBGKR-UHFFFAOYSA-M

计算性质

• 辛醇/水分配系数(LogP)：
  -1.5
• 重原子数：
  21.0
• 可旋转键数：
  6.0
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.31
• 拓扑面积：
  96.64
• 氢给体数：
  0.0
• 氢受体数：
  6.0

反应信息

• 作为产物：
  描述：

  1,4-丁磺酸内酯 、 7-羟基香豆素 在 potassium hydroxide 作用下， 以 甲醇 为溶剂， 反应 2.5h， 以10%的产率得到7-ω-sulfo-n-butoxy-coumarin potassium salt
  参考文献：
  名称：

  Searching for fluorescent nanocrystals in aqueous solutions of 7-methoxycoumarin

  摘要：

  The unexpected formation of nanocrystals in dilute dye solutions was revealed using the hydrophobic dye, 7-methoxycoumarin, the spectroscopic behavior of which has been frequently studied in water; comparison was made with the water-soluble, sulfonated analogue. A solution of the dye at 10(-5) M concentration range was found to be a suspension of nanocrystals; at concentrations of 1 x 10(-4) M, >70% dye was in the form of nanocrystals. Surprisingly, the presence of these nanocrystals was difficult to detect by routine absorbance and fluorescence spectroscopy and was mainly noticeable by measurement of fluorescence quantum yield, as the nanocrystals were poorly emissive compared to dissolved dye molecules; electron microscopy and dynamic light scattering gave clear evidence for the presence of nanocrystals. This article illustrates the fact that the formation of nanocrystals, although abundant, may easily go unnoticed. (C) 2010 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.dyepig.2010.04.002