Synthesis and Fluorescence Properties Research of Water-soluble Nanoparticles Based on CdSe@ZnS Quantum Dots

被引：0
|
作者：
Zhuang Q.-Y. [1 ,2 ]
You F.-T. [1 ]
Peng H.-S. [2 ]
机构：
[1] Key Laboratory of Luminescence and Optical Information, Institute of Optoelectronic Technology, Beijing Jiaotong University, Beijing
[2] School of Science, Minzu University of China, Beijing
来源：
Peng, Hong-Shang (hshpeng@bjtu.edu.cn) | 2018年 / Editorial Office of Chinese Optics卷 / 39期
基金：
中国国家自然科学基金;
关键词：
Biological compatibility; CdSe@ZnS quantum dots; Energy transfer; Fluorescence labeling; Fluorescent lifetime;
D O I：
10.3788/fgxb20183910.1339
中图分类号：
学科分类号：
摘要：
As a new kind of fluorescent probe, quantum dots(QD) have got more and more attention especially the preparation. However, QDs synthesized in aqueous phase suffer from the low efficiency and quantum yield of oil-soluble QDs dropped significantly after the ligand exchange. In this work, we report a type of green CdSe@ZnS-based(G-NPs, 534 nm) and red CdSe@ZnS-based (R-NPs, 610 nm) nanoparticles prepared via a facile reprecipitation-encapsulation method. They possess a narrow half peak width(G-NPs~29 nm, R-NPs~31 nm), smaller particle size(45 nm). Also, we discuss critical energy transfer mechanism through the emission spectrum and the fluorescence decay. This method preserves the properties of QDs, and we used the NPs to label cancer cells(HepG2) due to their excellent optical properties. Fluorescence images of the cells clearly indicate that a good fraction of the NPs has been swallowed. © 2018, Science Press. All right reserved.
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页码：1339 / 1346
页数：7
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