Abstract
A naked-eye colored chemodosimeteric probes 4a-f, based on Schiff-azo dye conjugates were synthesized and characterized. All compounds 4a-f exhibited excellent selectivity and high sensitivity in absorbance toward detection of Fe3+ in alcoholic solutions under neutral pH conditions. The detection limit of the probe was shown to be up to 0.05 ppm. A simple paper test strip system for the rapid monitoring of Fe3+ was developed, indicating their convenient use in environmental samples. Electrochemical analysis of metal free conjugates and iron chelated probes confirmed the chelation of ligands.
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Research Highlights
• Synthesis of Schiff base azo dye probes based on 2-hydroxy-1-naphthaldehyde has been made to detect Fe (III) in organic/aqueous solvents.
• Absorption and electrochemical studies have confirmed the metal chelation with probes.
• Naked eye detection of Fe (III) has been made with these Schiff base azo dye conjugates at a very low concentration (0.05 ppm).
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Shabir, G., Saeed, A., Channar, P.A. et al. Sensitive and Selective “Turn-On” Chemodosimetric Probes for Fe3+ Based on a Skeleton of 2-Hydroxy-1-Naphthaldehyde. J Fluoresc 27, 2213–2221 (2017). https://doi.org/10.1007/s10895-017-2162-7
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DOI: https://doi.org/10.1007/s10895-017-2162-7