Highly selective ratiometric fluorescence determination of Eu3+ ion based on (4E)-4-(2-phenyldiazenyl)-2-((E)-(2-aminoethylimino)methyl)phenol |
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| Authors: | Mohammad Reza Ganjali Morteza Hosseini Maryam Hariri Parviz Norouzi Ali Akbar Khandar Akbar Bakhtiari |
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| Affiliation: | 1. Center of Excellence in Electrochemistry, Faculty of Chemistry, University of Tehran, Tehran, Iran;2. Department of Chemistry, Islamic Azad University, Savadkooh Branch & Young Researcher Club, Savadkooh, Iran;3. Department of Inorganic Chemistry, Faculty of Chemistry, University of Tabriz, Iran |
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| Abstract: | (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. |
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