Comparison of Two Rhodamine-polyamine Polystyrene Solid-phase Fluorescence Sensors for Hg(II) Detection Based on Theoretical Calculation


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).

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Corresponding author

Correspondence to Yi Li.

Additional information

Supported by the Natural Science Foundation of Jiangsu Province, China(No.BK20161542), the Natural Science Foundation of the Higher Education Institutions of Jiangsu Province, China(No.17KJB150006) and the Overseas Visiting Scholar Program for University Prominent Young & Middle-aged Teachers and Presidents of Jiangsu Province, China(No.2017).

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Liu, Y., Li, Y., Zong, L. et al. Comparison of Two Rhodamine-polyamine Polystyrene Solid-phase Fluorescence Sensors for Hg(II) Detection Based on Theoretical Calculation. Chem. Res. Chin. Univ. 36, 781–786 (2020).

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  • Carboxylated polystyrene microsphere
  • Rhodamine polyamine
  • Solid-phase fluorescence sensor
  • Fluorescent property
  • Hg(II) detection mechanism