| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1233420 | Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy | 2014 | 6 Pages |
•We have designed a new chemosensor for aluminum ions.•2-Methyl quinoline-4-carboxylic hydrazide was rarely synthesized.•L shows a large fluorescence enhancement with turn-on over 200-fold in ethanol.•It has lower detection limit.
A fluorescence probe, 8-formyl-7-hydroxyl-4-methyl coumarin – (2′-methylquinoline-4-formyl) hydrazone (L) has been synthesized. The chemosensor is found preferential binding to Al3+ in presence of other competitive ions with associated changes in its optical and fluorescence spectra behavior. Upon addition of Al3+ to a solution of L, it shows 200-fold enhancement of fluorescence intensity which might be attributed to form a 2:1 stoichiometry of the binding mode of LAl(III) and the chelation enhanced fluorescence (CHEF) process at 479 nm in ethanol. The lowest detection limit for Al3+ is determined as 8.2 × 10−7 M.
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