| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 177021 | Dyes and Pigments | 2012 | 8 Pages |
A new single molecule multianalyte sensor, vanillic aldehyde rhodamine 6G hydrazone has been designed for the selective detection of Cu2+ and Hg2+ ions. UV/Vis spectroscopy indicates that the sensor is a good chromogenic chemosensor for Cu2+ in 1:99 (v/v) ethanol–water media. Whereas, other ions, such as Li+, Na+, Mg2+, K+, Ca2+, Cr3+, Mn2+, Fe3+, Co2+, Ni2+, Zn2+, Ag+, Cd2+, Ba2+, Hg2+ and Pb2+ failed to generate a distinct response. Fluorescence spectral data reveals that the sensor is an excellent fluorescent chemosensor for Hg2+ in aqueous ethanol solution and with no fluorescent response toward other ions. The spectroscopic behavior of the sensor in living cells indicated that it can be used for the detection of Cu2+ and Hg2+ in environmental and biological systems. Mechanisms for the high selectivity of the sensor to Cu2+ and Hg2+ are discussed.
Graphical abstractFigure optionsDownload full-size imageDownload as PowerPoint slideHighlights► A new rhodamine-based single molecule multianalyte sensor was synthesized. ► It has high selectivity to Cu2+ and Hg2+ ions. ► The detection of Cu2+ and Hg2+ can be carried out in the environment and in biological systems. ► Visible Absorption and Fluorescence Spectroscopy as two signaling channels for the analysis.
