A HIGHLY SELECTIVE FLUORESCENT SENSOR FOR DETECTION OF TRIVALENT METAL IONS BASED ON A SIMPLE SCHIFF-BASE
A simple and easily synthesized fluorescent sensor L, based on condensation reaction of 1-Naphthylamine and terephthalaldehyde, was synthesized and characterized systemically. Both UV-vis and fluorescence spectroscopic studies indicated that the sensor L showed good selectivity toward trivalent metal ions (such as Al3+, Fe3+, Cr3+, La3+ and Ce3+) over other monovalent or divalent metal ions. The sensing mechanism was suggested that the trivalent ion promoted the hydrolysis of Schiff base. Meanwhile, took the common trivalent ions Al3+, Fe3+ and Cr3+ as examples, limit of detection (LOD) values of sensor L were calculated to be 1.23, 0.94 and 1.14 nM for Al3+, Cr3+ and Fe3+, respectively, suggesting very high sensitivity towards the cations which could make it attractive in trivalent metal ions detection.
| Main Authors: | , |
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| Format: | Digital revista |
| Language: | English |
| Published: |
Sociedade Brasileira de Química
2018
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| Online Access: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422018000600623 |
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