Journal
INORGANIC CHEMISTRY COMMUNICATIONS
Volume 39, Issue -, Pages 86-89Publisher
ELSEVIER
DOI: 10.1016/j.inoche.2013.10.035
Keywords
Coumarin-derived; Schiff base; Fluorescent chemosensor; Water-solubility
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Funding
- National Natural Science Foundation of China [20931003, 91122007]
- Specialized Research Fund for the Doctoral Program of Higher Education [20110211130002]
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A facile coumarin-based Schiff base sensor, 7-hydroxy-8-((2-hydroxy-phenylimino)methyl)-coumarin (H2L), has been designed and synthesized for selective detection of Al3+ in methanol-water (1:1, v/v). A fluorescence enhancement of 12-fold at 528 nm can be realized upon addition of 5.0 equiv. Al3+ with excitation at 421 nm. The mechanism of C=N isomerization, coupled with photoinduced energy transfer, is proposed to explain the observed spectral response. Most importantly, this Al3+ sensor has good water-solubility and can be excited with light in the visible range. (C) 2013 Elsevier B.V. All rights reserved.
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