Please use this identifier to cite or link to this item: 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
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