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Synthesis of cysteamine-coated CdTe quantum dots for the detection of bisphenol A

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Abstract

Cadmium telluride quantum dots (QDs) were prepared and coated with cysteamine using ultrasonic irradiation. The QDs were characterized by fluorescence spectroscopy, UV-vis absorption spectra, X-ray diffraction and infrared spectroscopy. The QDs possess a quantum yield as high as 46% and a quite narrow emission band (full width at half maximum of 38 nm). The fluorescence of these QDs is quenched by bisphenol A (BPA), and quenching can be described by a Stern-Volmer equation with correlation coefficient of 0.998. These findings resulted in a simple and rapid technique for determination of BPA that was applied to its determination in feeding bottles.

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Acknowledgements

This work was financially supported by the National Natural Science Foundation of China (No. 30972044).

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Authors and Affiliations

  1. College of Food Science and Technology, Huazhong Agricultural University, Wuhan, 430070, China

    Rui Kuang, Xuan Kuang, Siyi Pan, Xiaodong Zheng, Jiacai Duan & Yaqing Duan

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  1. Rui Kuang
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  2. Xuan Kuang
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  3. Siyi Pan
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  4. Xiaodong Zheng
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  5. Jiacai Duan
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  6. Yaqing Duan
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Correspondence to Siyi Pan.

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Kuang, R., Kuang, X., Pan, S. et al. Synthesis of cysteamine-coated CdTe quantum dots for the detection of bisphenol A. Microchim Acta 169, 109–115 (2010). https://doi.org/10.1007/s00604-010-0323-3

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  • DOI: https://doi.org/10.1007/s00604-010-0323-3

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