关键字：Mercury (metal);Fluorescence - Fluorescence spectroscopy - Metal ions - Metals - Nuclear magnetic resonance spectroscopy - Probes - Thioureas - Transition metal compounds - Transition metals;1H-NMR spectra - Alkaline earth - Color changes - Fluorescence intensities - Fluorescent probes - Rhodamine 6G - Spirolactam opening
摘要：An easily available novel fluorescent probe based on rhodamine 6G–thiourea conjugate (RGTU) has been synthesized. Upon mixed with Hg<sup>2+</sup>in CH<inf>3</inf>CN–H<inf>2</inf>O (1:9, v/v), the dramatic enhancement of fluorescence intensity as well as the color change of the solution were observed. The presence of common coexisting alkali, alkaline earth, and transition metal ions showed small or no interference with the detection of Hg<sup>2+</sup>. The Job’s plot and<sup>1</sup>H NMR spectra indicated that Hg<sup>2+</sup>induced spirolactam open to form 1:1 complex between RGTU and Hg<sup>2+</sup>. © 2017, Springer Science+Business Media New York.
卷号：27
期号：3
是否译文：否