text.skipToContent text.skipToNavigation

Maximum quantity allowed is 999



 Coumarins are aromatic lactone compounds and many of them exist in natural plants. A coumarin compound with an electron-donating group on the 7-position shows strong light absorption and luminescence, whereas unsubstituted coumarin compounds are hardly luminescent. This is because intramolecular charge transfer occurs when electron-donating and -withdrawing groups coexist in the coumarin molecule. An introduction of a group on the 3- or 4-position largely controls the wavelength of light absorption and luminescence. Furthermore, an introduction of an electron-withdrawing group on these positions can enhance the intensity of luminescence. Such coumarin dyes are useful for laser dyes emitting blue-green light.
38 项结果 显示
  • 2
  • 3
  • 4(current)
查看:  名单
产品编码 C2836
CAS RN 58336-35-9
纯度/分析方法 >96.0%(T)(HPLC)

产品编码 C2858
CAS RN 53518-18-6
纯度/分析方法 >95.0%(T)(HPLC)

产品编码:   C2836 | 纯度/分析方法   >96.0%(T)(HPLC)

产品编码:   C2858 | 纯度/分析方法   >95.0%(T)(HPLC)

  • 2
  • 3
  • 4(current)