التفاصيل البيبلوغرافية
| العنوان: |
Synthesis and fluorescence of crown ethers containing coumarin |
| المؤلفون: |
Peng, Ming-Sheng1,2, Cai, Jiwen1,3 puscjw@mail.sysu.edu.cn |
| المصدر: |
Dyes & Pigments. Dec2008, Vol. 79 Issue 3, p270-272. 3p. |
| مصطلحات موضوعية: |
*INTERMEDIATES (Chemistry), *ORGANIC compounds, *ETHERS, *FLUORESCENCE, *ORGANIC acids, *CROWN ethers |
| مستخلص: |
Abstract: The syntheses and fluorescence properties of a series of novel crown ethers containing coumarin group are presented. 2-(Benzocourmarin-3-acyloxymethyl) crown ethers were synthesized by reacting the acyl chloride of benzocourmarin-3-carboxylic acid with 2-hydroxymethyl crown ethers, while 4′-(benzocourmarin-3-carboxamido) benzo crown ethers were secured by reacting the acyl chloride of benzocourmarin-3-carboxylic acid with 4′-aminobenzo crown ethers. Only the ester-type crown ethers were fluorescent. As the polarity of the solvent increased, the emission maximum λ em showed a slight red shift. DMSO was used as the fluorescence quenching solvent. Increased fluorescence was observed upon the addition of alkali and alkaline earth metal ions. [Copyright &y& Elsevier] |
| قاعدة البيانات: |
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