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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

Wang, Jian-Hao and Zhang, Hai-Li and Li, Yong-Qiang and Qian, Jiao-Ru and Wang, Hai-Qiao and Xu, Ting-Ting and Zhao, Yuan-Di (2010) 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. Journal of Nanoparticle Research, 12 (5). pp. 1687-1695.

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Abstract

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.

Item Type:Article
Uncontrolled Keywords:Quantum dots - Temperature - Fluorescence - Bioprobes - Cell recognition - Nanomedicine
Subjects:Biomedical Science > Nanotechnology for animal health
Physical Science > Quantum phenomena
Biomedical Science > Nanotechnology for human health
Biomedical Science > Nanomedicine
ID Code:9231
Deposited By:SPI
Deposited On:08 Jun 2010 17:32
Last Modified:08 Jun 2010 17:32

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