ZHANG Qiao, CHEN Yan-qing, HU Feng, ZHANG Ming-xin. Preparation and Fluorescence Characterization of Water-soluble CdS/ZnS Quantum Dots Modified with 3-Mercaptopropionic Acid[J]. Journal of nanchang hangkong university(Natural science edition), 2014, 28(1): 60-63. DOI: 10.3969/j.issn.1001-4926.2014.01.011
Citation: ZHANG Qiao, CHEN Yan-qing, HU Feng, ZHANG Ming-xin. Preparation and Fluorescence Characterization of Water-soluble CdS/ZnS Quantum Dots Modified with 3-Mercaptopropionic Acid[J]. Journal of nanchang hangkong university(Natural science edition), 2014, 28(1): 60-63. DOI: 10.3969/j.issn.1001-4926.2014.01.011
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Preparation and Fluorescence Characterization of Water-soluble CdS/ZnS Quantum Dots Modified with 3-Mercaptopropionic Acid

    Abstract
  • Water-soluble CdS and core/shell CdS/ZnS quantum dots(QDs) were prepared by using 3-mercaptopropionic acid as modifier. The effects of reaction time, pH, temperature on fluorescence emission spectra of CdS/ZnS QDs were discussed. The nanocrystals were characterized by X-ray powder diffraction (XRD) and FTIR. The results showed that the fluorescence intensity of core/shell CdS/ZnS QDs is 2.27 times that of CdS quantum dots, and the maximum emission wavelength had a blue shift, and changed from 562nm to 540nm.
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