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Comparison of Two Rhodamine-Polyamine Polystyrene Solid-phase Fluorescence Sensors for Hg(II) Detection Based on Theoretical Calculation |
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| Authors: | LIU Yuanyuan LI Yi ZONG Linghui ZHANG Jingyi |
| Institution: | 1. School of Pharmaceutical and Chemical Engineering, Chengxian College, Southeast University, Nanjing 210088, P. R. China;2. College of Food Science and Light Industry, Nanjing Technical University, Nanjing 211816, P. R. China |
| Abstract: | 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). |
| Keywords: | Carboxylated polystyrene microsphere Rhodamine polyamine Solid-phase fluorescence sensor Fluorescent property Hg(II) detection mechanism |
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