Abstract
A novel hydroxyapatite (HAP)-fluorescein (FL) nanocomposite has been designed and assembled successfully as an efficient fluorescent probe for Cu 2+ ions. Compared with a plain FL probe, the HAP-FL probe exhibits higher stability and sensitivity. The fluorescence intensity of the probe has shown a linear response to Cu 2+ in the concentration range of 1 × 10 -3 -1 × 10 -6 mol·l -1 in an aqueous solution. These results indicate that the method based on the fluorescence quenching mechanism has enormous potential for the development of a highly efficient fluorescence probe for the detection of the heavy metal ions.
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