| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1254718 | Chinese Chemical Letters | 2014 | 4 Pages |
A new fluorescent “on–off” chemosensor for Hg2+ initiated by a derivative of rhodamine B was designed and synthesized. Compound 1 exhibited high sensitivity and selectivity for Hg2+ over other commonly coexistent metal ions in aqueous media. Upon the addition of Hg2+, the spirocyclic ring of probe is opened and a significant enhancement of visible color and fluorescence in the range of 500–600 nm is observed. The colorimetric and fluorescent response to Hg2+ can be conveniently detected by the naked eye, which provides a facile method for visual detection of Hg2+. From the molecular structure and spectral results of 1, an irreversible, hydrolysis, desulfurization reaction mechanism is proposed.
Graphical abstractA new fluorescent “on–off” chemosensor for Hg2+ initiated by based on rhodamine B derivative was designed and synthesized. From the molecular structure and spectral results of 1, an irreversible hydrolysis, desulfurization reaction mechanism is proposed.Figure optionsDownload full-size imageDownload as PowerPoint slide
