Syntheses, characterization and fluorescent properties of two triethylene-glycol dicoumarin-3-carboxylates

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• 作者：Hui Zhang ; Tianzhi Yu ; Yuling Zhao ; Duowang Fan ; Long Qian ; Changhui Yang ; Kai Zhang
• 关键词：Coumarins ; Triethylene glycol ; UV– ; vis spectrum ; Photoluminescence
• 刊名：Spectrochimica Acta Part A ; Molecular and Biomolecular Spectroscopy
• 出版年：2007
• 期刊代码：99_13861425
• 类别：ch
• 出版时间：November 2007
• 卷：68
• 期：3
• 页码：725-727
• 文件大小：298 K

摘要

Two novel triethylene-glycol dicoumarin-3-carboxylates were synthesized and characterized by element analysis, ¹H NMR, FT-IR and UV–vis absorption spectra. The photoluminescent behaviors of triethylene-glycol dibenzo[5,6]coumarin-3-carboxylate doped in PMMA were discussed. These compounds exhibit strong blue emission under ultraviolet light excitation. Compared to coumarin-3-triethylene glycol diester, the absorption and emission spectra of benzo[5,6]coumarin-3-triethylene glycol diester was bathochromically shifted due to the larger conjugation of benzene moiety. These derivatives have potential possible to explore organic electroluminescent materials.