A novel Hg2+-selective fluorescent chemprobe based on thiooxorhodamine-B and beta-C-glycoside

作者：Gu, Xiaomin; Fang, Zhijie^*

来源：Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy , 2017, 173: 495-501.

DOI：10.1016/j.saa.2016.09.042

• beta-C-glycoside
• Thiooxorhodamine B
• Fluorescent probe

In this paper, two novel easily available probes based on rhodamine B and beta-C-glycoside were synthesized and characterized by H-1 NMR, C-13 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.

• 出版日期2017-2-15
• 单位南京理工大学