title: A novel Hg2+-selective fluorescent chemprobe based on thiooxorhodamine-B and β-C-glycoside.
abstract: In this paper, two novel easily available probes based on rhodamine B and β-C-glycoside were synthesized and characterized by1H NMR,13C NMR and elemental analysis. Sensor 1 exhibited very high sensitivity and selectivity toward Hg2+over other metal ions, due to the opening of the spiro ring in thiooxorhodamine B caused by Hg2+through desulfurization. The binding analysis using Job's plot suggested 1:1 stoichiometry for the complexes formed for Hg2+. The fluorescent probe is pH independent in medium condition and common interferent ions do not show any interference with the Hg2+determination. It is anticipated that 1 could be a good candidate probe and has potential application for Hg2+determination.
authors.affiliation: School of Chemical Engineering, Nanjing University of Science & Technology, 200 Xiaolingwei St, Nanjing, JiangSu 210 094, PR China.
authors.forename: Xiaomin
authors.initials: X
authors.lastname: Gu
authors.affiliation: School of Chemical Engineering, Nanjing University of Science & Technology, 200 Xiaolingwei St, Nanjing, JiangSu 210 094, PR China. Electronic address: zjfang@njust.edu.cn.
authors.forename: Zhijie
authors.initials: Z
authors.lastname: Fang
keywords: Fluorescent probe; Thiooxorhodamine B; β-C-glycoside