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

作　　者：LIU Yuanyuan LI Yi ZONG Linghui ZHANG Jingvi 

机构地区：[1]School of Pharmaceutical and Chemical Engineering,Chetigxian College,Southeast University,Nanjing 21008&P.R.China [2]College of Food Science and Light Industry,Nanjing Technical University,Nanjing 211816,P.R.China

出　　处：《Chemical Research in Chinese Universities》2020年第5期781-786,共6页高等学校化学研究（英文版）

基　　金：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);the Overseas Visiting Scholar Program for University Prominent Young&Middle-aged Teachers and Presidents of Jiangsu Province,China(No.2017).

摘　　要：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.Thedetection 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).

关 键 词：Carboxylated polystyrene microsphere Rhodamine polyamine Solid-phase fluorescence sensor Fluorescent property Hg(Ⅱ)detection mechanism 

分 类 号：O657.3[理学—分析化学] TP212[理学—化学]