Two new rhodamine‐based fluorescent chemosensors for Fe3+ in aqueous solution |
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| Authors: | Yaqi Liu Zhanhui Xu Jinhui Wang Di Zhang Yong Ye Yufen Zhao |
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| Affiliation: | 1. Phosphorus Chemical Engineering Research Center of Henan Province, the College of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou, China;2. Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology (Ministry of Education), Department of Chemistry, Tsinghua University, Beijing, China;3. Key Lab Chem Biol, Fujian Prov Coll Chem & Chem Engn, Xiamen Univ, Xiamen, China |
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| Abstract: | Two new rhodamine‐based fluorescent probes were synthesized and characterized by NMR, high resolution mass spectrometer (HR‐MS) and IR. The probes displayed a high selectivity for Fe3+ among environmentally and biologically relevant metal ions in aqueous solution (CH3OH–H2O = 3 : 2, v/v). The significant changes in the fluorescence color could be used for naked‐eye detection. Job's plot, IR and 1H NMR indicated the formation of 1: 1 complexes between sensor 1 and Fe3+. The reversibility establishes the potential of both probes as chemosensors for Fe3+ detection. The probe showed highly selectivity in aqueous solution and could be used over the pH range between 5 and 9. A simple paper test‐strip system for the rapid monitoring of Fe3+ was developed, indicating its convenient use in environmental samples. Copyright © 2014 John Wiley & Sons, Ltd. |
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| Keywords: | rhodamine fluorescence chemosensors Fe3+ reversible |
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