Journal
SENSORS AND ACTUATORS B-CHEMICAL
Volume 191, Issue -, Pages 108-114Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.snb.2013.09.063
Keywords
Highly stable luminescence; CdSe MSQDs; HeLa cells; Aqueous solution
Funding
- CAPES
- FAPEMIG
- MCT/CNPq
- NANOBIOTEC BRAZIL
- Brazilian Agency CAPES
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We report the highly stable luminescence of CdSe magic-sized quantum dots (MSQDs) in HeLa cells. The CdSe MSQDs with average diameter of 1.6 nm were synthesized in an aqueous solution with a biocompatible capping ligand. Luminescence spectra showed broad range luminescence and deep level defect characteristic of wurtzite structures, which were confirmed by X-ray diffraction. Images from fluorescence microscopy, captured after 24 h and 36 h, showed that the luminescence of the CdSe MSQDs in HeLa cells was highly stable, indicating their potential utility in studies of tumor cell migration in vivo. (C) 2013 Elsevier B.V. All rights reserved.
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