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. 2023 Feb 15;287(Pt 1):122069.
doi: 10.1016/j.saa.2022.122069. Epub 2022 Nov 4.

A cyclodextrin-based turn-off fluorescent probe for naked-eye detection of copper ions in aqueous solution

Jin Wang  1 , Xiao-Qin Yang  2 , Na Li  2 , Li-Li Wang  2 , Xin-Ying Xu  2 , Ce Zhang  3
Affiliations

A cyclodextrin-based turn-off fluorescent probe for naked-eye detection of copper ions in aqueous solution

Jin Wang et al. Spectrochim Acta A Mol Biomol Spectrosc. .

Abstract

A novel fluorescent probe L consisting of β-Cyclodextrin (β-CD) and thiosemicarbazide moieties was designed for copper ions detection. Apparent fluorescence quenching of probe L in Tris-HCl（pH = 7.4）solution was observed only in the presence of Cu2+, among other interfering ions. The present probe L was 1:1 complexed with Cu2+ and the detection limit of probe L was calculated to be 1.37 μM. The results demonstrate that the probe L may provide a convenient method for visual detection of Cu2+ in the environmental and biological systems.

Keywords: Copper ions detection; Fluorescent probe; Thiosemicarbazide; β-Cyclodextrin.

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Conflict of interest statement

Declaration of Competing Interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.

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