Aluminum is a widely distributed element and plays an indispensable role in our lives, but excessive intake of Al3+ can cause potential harm to human health. Highly selective methods for the rapid detection of Al3+ are urgently needed. Here, a novel "turn on" fluorescent probe L based on Schiff-base of 2-hydroxy-1-naphthaldehyde and 8-aminoquinoline was obtained in an excellent yield. Probe L presents significant properties such as rapid response, good stability, wide pH range, simple synthetic operation, and provides an efficient strategy for the highly selective detection of Al3+ in an aqueous solution of DMSO/H2O (7:3, v:v). According to Job's curve and fluorescence titration, probe L with Al3+ forms a 2:1 ratio of complex, and the lowest limit of detection is 3.23 × 10−8 mol/L. The possible combination mode for probe L with Al3+ was proposed by comparison with the changes of 1H NMR and FTIR spectra of L and its complex. In addition, the potent applicants for probe L were also investigated, and indicated that it could conveniently be made into a series of sensor strips and applied to rapidly detect trace Al3+ in traditional Chinese medicine.
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Abstract of article is published in Zhurnal Prikladnoi Spektroskopii, Vol. 91, No. 3, p. 465, May–June, 2024.
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Cai, SQ., Zhang, KF. & Cai, XH. Highly Selective Fluorescent Sensor for Detection of Al3+ Based on Schiff-Base of 2-Hydroxy-1-Naphthaldehyde and 8-Aminoquinoline and Its Applications. J Appl Spectrosc (2024). https://doi.org/10.1007/s10812-024-01768-y
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DOI: https://doi.org/10.1007/s10812-024-01768-y