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Highly Luminescent Heterostructured Copper-Doped Zinc Sulfide Nanocrystals for Application in Cancer Cell Labeling

Huixiang Ang, Michel Bosman, Ramesh Thamankar, Muhammad Faizal B Zulkifli, Swee Kuan Yen, Anushya Hariharan, Thankiah Sudhaharan, Subramanian Tamil Selvan

Chemphyschem. 2016 Aug 18;17(16):2489-95.

PMID: 27146419

Abstract:

The structural characteristics of the seed-mediated synthesis of heterostructured CuS-ZnS nanocrystals (NCs) and Cu-doped ZnS (ZnS:Cu) NCs synthesized by two different protocols are compared and analyzed. At high Cu dopant concentrations, segregated subclusters of ZnS and CuS are observed. The photoluminescence quantum yield of ZnS:Cu NCs is about 50-80 %; a value much higher than that of ZnS NCs (6 %). Finally, these NCs are coated with a thin silica shell by using (3-mercaptopropyl)triethoxysilane in a reverse microemulsion to make them water soluble. Cytotoxicity experiments show that these silica-coated NCs have greatly reduced toxicity on both cancerous HeLa and noncancerous Chinese hamster ovary cells. The labeling of cancerous HeLa cells is also demonstrated.

Chemicals Related in the Paper:

Catalog Number Product Name Structure CAS Number Price
AP14814096 (3-Mercaptopropyl)triethoxysilane (3-Mercaptopropyl)triethoxysilane 14814-09-6 Price
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