Hydrothermal synthesis of PEG-capped ZnS:Mn2+ quantum dots

Yingnan Zhang; DongJiang; Yanmei Ma; He Zhi; Haibo Zhang; ZhenHua Jiang

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Hydrothermal synthesis of PEG-capped ZnS:Mn2+ quantum dots

Yingnan Zhang 1,DongJiang 1 #,Yanmei Ma 2,He Zhi 2,Haibo Zhang 1,ZhenHua Jiang 1 *

1.Engineering Research Center of High Performance Plastics, Ministry of Education，College of Chemistry, Jilin University, Changchun 130012

2.State key laboratory of superhard materials, College of Physics, Jilin University,Changchun,130012

*Correspondence author

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Funding: Jilin Provincial Science & Technology Department（No.201215012）, Open Project of State Key Laboratory of Superhard Materials ,Jilin University（No.201311）, Specialized Research Fund for the Doctoral Program of Higher Education （No.20100061120085）

Opened online: 6 December 2013

Accepted by: none

Citation: Yingnan Zhang,DongJiang,Yanmei Ma.Hydrothermal synthesis of PEG-capped ZnS:Mn2+ quantum dots[OL]. [ 6 December 2013] http://en.paper.edu.cn/en_releasepaper/content/4571442

The water-soluble Mn2+-doped ZnS nanocrystals surface capped with poly ethylene glycol (expressed as PEG-ZnS:Mn2+) were synthesized in aqueous solution by using PEG as surface modifier without ligand exchange for the first time. The particles were obtained using chemical precipitation method at 100 C with an average diameter of 4 nm and a zinc blende structure. The PEG modified on the surface of PEG-ZnS:Mn2+ nanocrystals renders the nanocrystals water soluble and biocompatible. And the PEG-ZnS:Mn2+ nanocrystals have the potential applications 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 are also investigated.

Keywords:ZnS; Mn2+ doped; PEG; Nanocomposites

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