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http://hdl.handle.net/10397/18342
Title: | A novel turn-on colorimetric and fluorescent sensor for Fe3+ and Al3+ with solvent-dependent binding properties and its sequential response to carbonate | Authors: | He, L Liu, C Xin, JH |
Keywords: | Al3+ Carbonate Colorimetric sensor Fe3+ Fluorescence Rhodamine |
Issue Date: | 2015 | Publisher: | Elsevier | Source: | Sensors and actuators, B: Chemical, 2015, v. 213, p. 181-187 How to cite? | Journal: | Sensors and actuators. B, Chemical | Abstract: | A novel bis-rhodamine derivative BRU was designed and synthesized in a simple way. In aqueous media, BRU could efficiently recognize Fe3+ and Al3+ among other metal ions with different color appearances through a turn-on colorimetric response. In the presence of Fe3+ or Al3+, BRU solution also displayed enhanced fluorescent emission. According to the detection limit, BRU had high recognition sensitivity towards Fe3+ and Al3+ based on either colorimetric absorbance or fluorescent emission. Interestingly, BRU bound to Fe3+ or Al3+ with a simple 1:1 mode in CH3OH and a 1:2 mode in CH3OH/H2O, displaying solvent-dependent binding property. In addition, the in situ generated BRU-Fe3+ and BRU-Al3+ complex exhibited fluorescence turn-off and color disappearance towards carbonate among other anions. These provide a potential application in sequential detection of Fe3+, Al3+ and carbonate with naked-eyes. | URI: | http://hdl.handle.net/10397/18342 | ISSN: | 0925-4005 | EISSN: | 1873-3077 | DOI: | 10.1016/j.snb.2015.02.060 |
Appears in Collections: | Journal/Magazine Article |
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