A new fluorescent probe for the detection of Hg2＋ was designed and synthesized via attaching N-methylisatin to rhodamine B hydrazide through an imine linkage. In an ethanol-Tris buffer medium, the addition of Hg2＋ c...A new fluorescent probe for the detection of Hg2＋ was designed and synthesized via attaching N-methylisatin to rhodamine B hydrazide through an imine linkage. In an ethanol-Tris buffer medium, the addition of Hg2＋ caused a strong orange fluorescence and a visual color change from colorless to pink. Other coexisting metal ions did not interfere with the detection of Hg2＋. The research on the detection of Hg2＋ in natural water suggested the possibility of practical applications in environment monitoring. Based on ESI-MS analysis, the Hg2＋-sensing mechanism was proposed.展开更多
基金Supported by the National Natural Science Foundation of China（No.21162010）.
文摘A new fluorescent probe for the detection of Hg2＋ was designed and synthesized via attaching N-methylisatin to rhodamine B hydrazide through an imine linkage. In an ethanol-Tris buffer medium, the addition of Hg2＋ caused a strong orange fluorescence and a visual color change from colorless to pink. Other coexisting metal ions did not interfere with the detection of Hg2＋. The research on the detection of Hg2＋ in natural water suggested the possibility of practical applications in environment monitoring. Based on ESI-MS analysis, the Hg2＋-sensing mechanism was proposed.
