Highly luminescent copper nanoclusters stabilized by ascorbic acid for the quantitative detection of 4-aminoazobenzene

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Abstract

As one of the widely studied metal nanoclusters, the preparation of copper nanoclusters (Cu NCs) by a facile method with high fluorescence performance has been the interest of researchers. In this paper, a simple, green, clean, and time-saving chemical etching method was used to synthesize water-soluble Cu NCs using ascorbic acid (AA) as the reducing agent. The as-prepared Cu NCs showed strong green fluorescence (with a quantum yield as high as 33.6%) and high ion stability, and good antioxidant activity as well. The resultant Cu NCs were used for the detection of 4-aminoazobenzene (one of 24 kinds of prohibited textile compounds) in water with a minimum detection limit of 1.44 µM, which has good potential for fabric safety monitoring.

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Li, Q., Li, Y., Li, H., Yan, X., Han, G., Chen, F., … Yan, W. (2020). Highly luminescent copper nanoclusters stabilized by ascorbic acid for the quantitative detection of 4-aminoazobenzene. Nanomaterials, 10(8), 1–15. https://doi.org/10.3390/nano10081531

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