Citation: ZHANG Li-Ping, WU Shan, LIU Dan, WAN Yong-Gang, LIU Dao-Sen. Water-Stable Magnesium-Doped ZnO Quantum Dots: One-Pot Synthesis and Cell Labeling Applications[J]. Chinese Journal of Inorganic Chemistry, ;2015, 31(8): 1644-1650. doi: 10.11862/CJIC.2015.218 shu

Water-Stable Magnesium-Doped ZnO Quantum Dots: One-Pot Synthesis and Cell Labeling Applications

1.
1. College of Medical Technology, Qiqihar Medical University, Qiqihar, Heilongjiang 161006, China;
2.
2. Research Institute of Medicine & Pharmacy, Qiqihar Medical University, Qiqihar, Heilongjiang 161006, China;
3.
3. Communication and Electronic Engineering Institute, Qiqihar University, Qiqihar, Heilongjiang 161006, China

Corresponding author: ZHANG Li-Ping,
Received Date: 4 May 2015
Available Online: 1 July 2015
Fund Project: 黑龙江省教育厅科学技术研究基金(No.12541910)资助项目。 (No.12541910)

A one-pot method was developed for synthesizing Magnesium-doped ZnO quantum dots (QDs) capped with (3-aminopropyl)triethoxysilane (APTES). The as-prepared quantum dots were characterized by XRD, TEM, UV-Vis, FL (fluorescent spectroscopy) and FTIR. The results show that the Mg-doped quantum dots exhibit greatly enhanced luminescent property and their quantum yield is increased from 11% for un-doped ZnO QDs to 33% for Mg-doped ZnO QDs at Mg-doping content of 30%. In addition, aqueous-stability is achieved by capping the Mg-doped ZnO QDs with APTES. The obtained APTES-capped Mg-doped ZnO QDs exhibit excellent water stability and retain visible emissions. The APTES-capped Mg-doped ZnO QDs demonstrate promising applications in MCF-7 cell labeling.
- ZnO quantum dots;magnesium-doped;APTES-capped;aqueous-stability
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