Preparation of Hemicyanine Dyes by One-Pot Method and Research as Fluorescent Probe
Based on popularization and application of synthesis process of One-Pot,solvent-free and three-component,a new vinyl hemicyanine dye and another styrene hemicyanine dye were synthesized.The optimal reaction conditions of the One-Pot method were determined by orthogonal test,the yield was up to 60％.The fluorescence spectra results of two dyes indicated that the stylenyl hemicy-anine dye was only sensitive to chromate ion(CrO42-),and the color of the dye solution was changed significantly;the vinyl hemicya-nine dye was sensitive to many metal ions(Fe2+、Fe3+、Cr2O72-、MnO4-),and the fluorescence quenching was observed.These re-sults implied that both hemicyanine dyes could be used as functional materials for monitoring the presence of heavy metal ions in the en-vironment.
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