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An off-on fluorescent sensor with high selectivity and sensitivity for Fe(III).
- Source :
-
Journal of Coordination Chemistry . Mar2014, Vol. 67 Issue 5, p921-928. 8p. 3 Diagrams, 3 Graphs. - Publication Year :
- 2014
-
Abstract
- A new fluorescent derivative (1) containing coumarin exhibits Fe(III)-selective strong yellow-green fluorescence in ethanol. This compound could be used as an “off-on” chemosensor and allow the detection of Fe3+by monitoring changes in absorption and fluorescence spectra. Upon addition of Fe3+, an overall emission change of 125-fold was observed. High selectivity and sensitivity were observed over other metal ions, mainly due to the spirolactam ring-opening power of Fe3+. The detection limit was as low as 5.6?ppb. Photo-induced electron transfer, coupled with intramolecular charge transfer are proposed to account for the observed spectral response. [ABSTRACT FROM PUBLISHER]
Details
- Language :
- English
- ISSN :
- 00958972
- Volume :
- 67
- Issue :
- 5
- Database :
- Academic Search Index
- Journal :
- Journal of Coordination Chemistry
- Publication Type :
- Academic Journal
- Accession number :
- 95807452
- Full Text :
- https://doi.org/10.1080/00958972.2014.903474