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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...
A series of Rhodamine B derivative was synthesized and characterized by NMR, HR-MS and IR. The probes exhibited highly selective and sensitive recognition toward Fe 3+ over other metal ions. The significant changes in the fluorescence color could be used for naked-eye detection. The Job's plot, MS, IR and 1 H NMR indicated the formation of 1:2 complexes between 1 and Fe 3+ ...
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