Abstract
A novel selective fluorescent chemosensor based on naphthalimide derivatives (AN-SB) was synthesized and characterized. Once combined with Cu2+, compound AN-SB could give rise to a visible yellow to orange color change and fluorescence quenching, while other metal ions showed subtle disturbance. The complex (AN-SB-Cu2+) formed by Cu2+ and AN-SB displayed high specificity for H2PO4-. Among the various anions, only H2PO4- induced the revival of color and fluorescence of AN-SB, resulting in "off-on" type sensing of H2PO4- anion. The signal transduction occured via reversible formation-separation of complex AN-SB-Cu2+, however, slight changes were observed in the presence of other anions.
Original language | English |
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Pages (from-to) | 323-329 |
Number of pages | 7 |
Journal | SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY |
Volume | 114 |
Early online date | 30 May 2013 |
DOIs | |
Publication status | Published - Oct 2013 |
Externally published | Yes |
Keywords
- Dihydrogen phosphate anions
- Fluorescence revival
- Naphthalimide derivatives
- Fluorescent probe
- High selectivity
- ANION RECOGNITION
- AQUEOUS-SOLUTION
- SENSOR
- RECEPTORS
- FLUORIDE
- BINDING
- H2PO4
- WATER