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Novel Fluorometric Turn On Detection of Aluminum by Chalcone-Based Chemosensor in Aqueous Phase
Guan-Yeow Yeap1, Yi-Huan Chan2, Wan Ahmad Kamil Mahmood2
1Liquid Crystal Research Laboratory, School of Chemical Sciences, Universiti Sains Malaysia, 11800, Minden, Penang, Malaysia. gyyeap@usm.my.
Abstract:
A novel, 100% water-soluble chalcone based chemosensing receptor {1-[3-(2-Hydroxy-phenyl)-3-oxo-propenyl]-naphthalen-2-yloxy}-acetic acid, L was synthesized and characterized. The receptor L is designed based on the chelation enhanced fluorescence (CHEF) mechanism. The chemosensing properties of L were evaluated by UV-vis and fluorescence spectrometric methods. It exhibits highly selective recognition ability towards aluminum ions in water over other metal ions. The binding stoichiometry of L- Al3+ complex is 2:1 by means of Job's plot and the detection limit is 5.66 × 10- 8 M.
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