Abstract
Herein, we reported a simple one-pot green method for preparation of fluorescent copper nanoclusters (Cu NCs) with a high quantum yield up to 8.6%, using glutathione as the stabilizing agent. The as-prepared Cu NCs had good water solubility, excellent stability and ultrafine size through the characterization of UV–vis absorption spectroscopy, fluorescence spectroscopy, transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), and Fourier transform infrared (FTIR) spectroscopy. Experimental results showed that the fluorescence of Cu NCs was linearly quenched by the Fe3+ concentrations in the range of 1–100μM, with the detection limit of 0.3μM. The as-formed Cu NCs were explored for the assay of Fe3+ in real water samples.
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