Abstract
Based on the chromone skeleton, a simple and novel probe that is 6-ethoxychromone-3-carbaldehyde-(furanyl) hydrazone (L) has been synthesized and completely characterized. It exhibited representative turn-on fluorescent properties and obviously colorimetric changes with high selectivity to Al3+ and Cu2+. For Al3+, L displayed a turn on green fluorescence in EtOH/H2O (3/2) aqueous media over other common cations. With Cu2+, L perceived Cu2+ through the naked-eye by the color changed-from colorless to yellow. Moreover, the coordination ratio between L-Al3+and L-Cu2+ was 1:1 which could be verified by the Job’s plot, 1H NMR and high-resolution mass spectrum. Consequentially, L could be used as a solid probe for both Al3+ and Cu2+.
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