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Naked-eye detection of copper(II) ions by a “clickable” fluorescent sensor.
- Source :
-
Sensors & Actuators B: Chemical . Mar2017, Vol. 240, p560-565. 6p. - Publication Year :
- 2017
-
Abstract
- A novel “clickable” sensing platform for signal-on fluorescent detection of Cu 2+ has been developed based on the high regioselectivity of Cu(I)-catalyzed azide–alkyne click reaction (CuAAC) and the aggregated AIE-active molecules (BATPE) as the signal reporters. The CuAAC reaction causes a structural change of BATPE from molecularly dispersed to aggregate state in the presence of trace Cu 2+ , thus inducing a dramatic fluorescence “turn-on” response which can be judged with the naked eye. Under the optimum conditions, down to 0.2 μM and 0.5 μM Cu 2+ were successfully detected by fluorescence spectrophotometer and naked eye, respectively. This method is simple and low-cost without the need for expensive equipment. Thanks to the superior specificity of CuAAC reaction, our assay is capable of sensing Cu 2+ in the existence of other environmentally relevant metal ions in real samples, indicating that it may serve as a promising sensor for on-site Cu 2+ analysis. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 09254005
- Volume :
- 240
- Database :
- Academic Search Index
- Journal :
- Sensors & Actuators B: Chemical
- Publication Type :
- Academic Journal
- Accession number :
- 119603827
- Full Text :
- https://doi.org/10.1016/j.snb.2016.09.009