A feasible method of improving the quantum yield of CdTe/CdS quantum dots by the first heating–cooling cycle and their application in cancer cell recognition

被引:3
作者
Jian-Hao Wang
Hai-Li Zhang
Yong-Qiang Li
Jiao-Ru Qian
Hai-Qiao Wang
Ting-Ting Xu
Yuan-Di Zhao
机构
[1] Huazhong University of Science and Technology,Britton Chance Center for Biomedical Photonics, Wuhan National Laboratory for Optoelectronics
来源
Journal of Nanoparticle Research | 2010年 / 12卷
关键词
Quantum dots; Temperature; Fluorescence; Bioprobes; Cell recognition; Nanomedicine;
D O I
暂无
中图分类号
学科分类号
摘要
In this article, water-soluble CdTe/CdS quantum dots (QDs) were synthesized in aqueous solution with captosuccinic acid as stabilizer. The absorption and fluorescence spectra showed that the as-prepared QDs had good optical properties. It was observed that the quantum yield (QY) of QDs was greatly increased after a heating–cooling cycle (from 22 to 41%). Then, the QDs were used to prepare fluorescent probes. The experiment results showed that the transferrin (Tf) could conjugate to QDs effectively and the HepG2 cells could be recognized successfully. This study is of great significance for the preparation of high-quality QDs and their applications in life science.
引用
收藏
页码:1687 / 1695
页数:8
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