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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...
Three Rhodamine B derivatives were synthesized and characterized by ESI‐MS, NMR, HR‐MS and IR. The probes exhibit high selectivity and sensitivity towards Fe3+ over other metal ions in CH3CN–water. Upon the addition of Fe3+, the spirocyclic ring of the probe was opened and a significant enhancement of visible color and fluorescence within the range of 540–700 nm was observed. The colorimetric and...
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