Comparison of Two Rhodamine-polyamine Polystyrene Solid-phase Fluorescence Sensors for Hg(II) Detection Based on Theoretical Calculation
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Two novel rhodamine-based polystyrene solid-phase fluorescence sensors PS-PA-I and PS-PA-II with different lengths of polyamines were synthesized for Hg(II) determination. The detection mechanism involving the Hg(II) chelation-induced spirocycle open of rhodamine was proposed with the aid of theoretical calculation. The stronger N—Hg bond and the longer polyamine chain in PS-PA-II led to a better selectivity, much higher and more quickly fluorescence response to Hg(II).
KeywordsCarboxylated polystyrene microsphere Rhodamine polyamine Solid-phase fluorescence sensor Fluorescent property Hg(II) detection mechanism
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- Zhang B., Lu J., Liu X., Jin H., He G., Guo X., Int. J. Polym. Sci., 2018, 8702597Google Scholar