Aqueous Synthesis of Highly Luminescent CdTe/CdS/ZnS Core-Shell-Shell Quantum Dots with Biocompatibility

Huai Qing Huang; Jin Ling Liu; Bao Fu Han; Shu Kun Xu

doi:10.4028/www.scientific.net/AMR.287-290.348

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 287-290Aqueous Synthesis of Highly Luminescent...

Aqueous Synthesis of Highly Luminescent CdTe/CdS/ZnS Core-Shell-Shell Quantum Dots with Biocompatibility

Abstract:

CdTe/CdS/ZnS core-shell-shell (CSS) quantum dots (QDs) were synthesized in aqueous solution via water-bathing combined hydrothermal method using L-cysteine (L-Cys) as a stabilizer. This method possesses both the advantages of water-bathing and hydrothermal methods, and thus can prepare CSS QDs with markedly reduced synthesis time than previously reported methods. The as-prepared QDs display a higher fluorescent intensity than bare CdTe or CdTe/CdS. After co-cultured with yeast at different growth phase, the as-prepared L-Cys capped CdTe/CdS/ZnS QDs showed much less toxicity than the other CdTe or CdTe/CdS QDs. Our results demonstrate that the CSS QD would have a promising potential in fields of bio-labeling and cell imaging.

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Periodical:

Advanced Materials Research (Volumes 287-290)

Pages:

348-351

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.287-290.348

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Online since:

July 2011

Authors:

Huai Qing Huang, Jin Ling Liu, Bao Fu Han, Shu Kun Xu

Keywords:

Aqueous Synthesis, Biocompatibility, Cd Te/ Cd S/ Zn S Core-Shell-Shell Quantum Dots, Yeast

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