Abstract
Water-soluble Mn2+-doped ZnS nanocrystals surface capped with polyethylene glycol(expressed as PEG-ZnS:Mn2+) were synthesized in aqueous solution with PEG as surface modifier without ligand exchange. The particles were obtained via chemical precipitation method at 100 °C with an average diameter of 3 nm and a zinc blende structure. The PEG modified on the surface of PEG-ZnS:Mn2+ nanocrystals rendered the nanocrystals water soluble and biocompatible. And the PEG-ZnS:Mn2+ nanocrystals have the potential application in molecular assembly and biological fluorescence analysis. The effects of the Mn2+ concentration, stabilizer concentration, and synthesis time on the photoluminescence(PL) intensity of ZnS:Mn2+ QDs were also investigated.
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Supported by the Specialized Research Fund for the Doctoral Program of Higher Education of China(No.20100061120085), the Project of the Jilin Provincial Science and Technology Department, China(No.201215012) and the Open Project of State Key Laboratory of Superhard Materials, Jilin University, China(No.201311).
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Zhang, Y., Jiang, D., He, Z. et al. Hydrothermal synthesis of PEG-capped ZnS:Mn2+ quantum dots nanocomposites. Chem. Res. Chin. Univ. 30, 176–180 (2014). https://doi.org/10.1007/s40242-013-3101-z
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DOI: https://doi.org/10.1007/s40242-013-3101-z