Synthesis and photoluminescent properties of two novel tripodal compounds containing coumarin moieties

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• 作者：Tianzhi Yu ; Peng Zhang ; Yuling Zhao ; Hui Zhang ; Jing Meng ; Duowang Fan
• 关键词：Synthesis ; Photoluminescence ; Tripodal compounds ; Coumarin derivative
• 刊名：Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy
• 出版年：2009
• 出版时间：July 2009
• 年：2009
• 卷：73
• 期：1
• 页码：168-173
• 全文大小：721 K

文摘

Two novel tripodal compounds, tris[2-(7-diethylamino-coumarin-3-carboxamide)ethyl]amine (Tren-C1) and tris[2-(benzo[5,6]coumarin-3-carboxamide)ethyl]amine (Tren-C2), were synthesized and characterized. The UV–vis and fluorescence properties of Tren-C1 and Tren-C2 in solutions were investigated. These two compounds exhibited strong blue emission under ultraviolet light excitation. The maximal fluorescence emission occurred at about the level of 10⁻⁵ mol/L. The chromophore units in the tripodal compounds shown a little interaction in the ground state, while the interactions in the excited state was notable and which leads to a broad and bathochromic shift of the emission bands.