Highly selective ratiometric fluorescence determination of Eu³⁺ ion based on (4E)-4-(2-phenyldiazenyl)-2-((E)-(2-aminoethylimino)methyl)phenol

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• 作者：Mohammad Reza Ganjali ; Morteza Hosseini ; Maryam Hariri ; Parviz Norouzi ; Ali Akbar Kh ; ar ; Akbar Bakhtiari
• 关键词：Europium ; Ratiometric ; Chemosensor ; Fluorescence
• 刊名：Materials Science and Engineering: C
• 出版年：2010
• 出版时间：30 August 2010
• 年：2010
• 卷：30
• 期：7
• 页码：929-933
• 全文大小：784 K

文摘

(4E)-4-(2-phenyldiazenyl)-2-((E)-(2-aminoethylimino)methyl)phenol (PAMP) was synthesized for the first time and used as a ratiometric fluorescent chemosensor for recognition of Eu³⁺ ions in acetonitrile solution. PAMP shows a fluorescent emission at 536 nm. When it forms a complex with Eu³⁺ ion, two new fluorescent enhancements at 418 and 496 nm appeared. In acetonitrile solution, the blue shift of fluorescent emission upon europium binding is due to the formation of a 1:1 metal ligand complex. The chemosensor shows a linear response toward Eu³⁺ in the range of 8.3 × 10^− 8 M to 8.3 × 10^− 6 M. The new fluorescent probe exhibits high selectivity toward Eu³⁺ ions over a large number of interfering cations.