Chemical Research in Chinese Universities ›› 2020, Vol. 36 ›› Issue (5): 781-786.doi: 10.1007/s40242-019-9258-3

• Articles • Previous Articles     Next Articles

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

LIU Yuanyuan1, LI Yi2, ZONG Linghui2, ZHANG Jingyi1   

  1. 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
  • Received:2019-09-23 Revised:2019-11-07 Online:2020-10-01 Published:2020-10-01
  • Contact: LI Yi E-mail:liynj2012@njtech.edu.cn
  • Supported by:
    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).

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).

Key words: Carboxylated polystyrene microsphere, Rhodamine polyamine, Solid-phase fluorescence sensor, Fluorescent property, Hg(II) detection mechanism