Synthesis,characterization and cytotoxicity test of water-soluble Cu:CdTe/CdS core-shell quantum dots

被引：0
|
作者：
Xiao L. [1 ]
Zhao H. [1 ]
Fan H. [1 ]
机构：
[1] Engineering Research Center in Biomaterials, Sichuan University, Chengdu
来源：
Cailiao Daobao/Materials Review | 2016年 / 30卷 / 11期
关键词：
Core-shell structure; Cu:CdTe/CdS; Cytotoxicity; Optical property; Quantum dot;
D O I：
10.11896/j.issn.1005-023X.2016.22.012
中图分类号：
学科分类号：
摘要：
Cu-doped CdTe quantum dots (QDs) were prepared through water-phase synthesis and CdS shells were coated on these prepared QDs to form Cu:CdTe/CdS core/shell quantum dots, which were then characterized by means of fluorescence emission spectroscopy (FL), UV-Visible absorption spectroscopy (UV-Vis), transmission electron microscopy (TEM) and energy dispersive spectroscopy (EDS). Moreover, the influence of Cu-doping concentration, CdS shell growth duration and molar ratio of Cd/thiourea on the optical properties of Cu:CdTe doped quantum dots were studied. The cytotoxicity of the samples were detected by using human osteosarcoma cells (MG-63 cells). The results showed that compared with undoped CdTe quantum dots, the synthesized Cu:CdTe/CdS core/shell quantum dots realized a redshift of fluorescence emission, an enhancement of fluorescence intensity and a decline of cell toxicity which can be attributed to Cu doping and CdS shell. © 2016, Materials Review Magazine. All right reserved.
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页码：55 / 59and76
页数：5921
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