Por favor, use este identificador para citar o enlazar a este item:
http://hdl.handle.net/10261/98492
COMPARTIR / EXPORTAR:
SHARE CORE BASE | |
Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL | DATACITE | |
Título: | Mechanochemical synthesis and characterization of II-VI nanocrystals: Challenge for cytotoxicity issues |
Autor: | Baláž, Peter; Jardin, R.; Dutková, Erika; Sayagués, María Jesús CSIC ORCID; Baláž, Matej; Moizis, J.; Turinicovña, E.; Fabián, Martin | Fecha de publicación: | 2012 | Editor: | Polish Academy of Sciences | Citación: | Acta Physica Polonica A 122: 224- 229 (2012) | Resumen: | CdSe@ZnS nanocrystals have been prepared by a two-step solid state mechanochemical synthesis. CdSe prepared from elements in the first step is mixed with ZnS synthesized from zinc acetate and sodium sulfide in the second step. The crystallite size of the new type CdSe@ZnS nanocrystals determined by X-ray diffraction Rietveld refined method was 35 nm and 10 nm for CdSe and ZnS, respectively. Energy dispersive/transmission electron microscopy/energy dispersive spectroscopy methods show good crystallinity of the nanoparticles and scanning electron microscopy elemental mapping illustrate consistent distribution of Cd, Se, Zn and S elements in the bulk of samples. UV-VIS spectra show an onset at 320 nm with calculated bandgap 3.85 eV. This absorption arises from the vibration modes of Zn-S bonds. The nanocrystals show the blue shift from the bandgap of bulk ZnS (3.66 eV). The synthesized CdSe@ZnS nanocrystals have been tested for dissolution, cytotoxicity and L-cysteine conjugation. The dissolution of Cd was less than 0.05 μg mL -1 (in comparison with 0.8 μg mL -1 which was evidenced for CdSe alone). The very low cytotoxic activity for selected cancer cell lines has been evidenced. CdSe@ZnS nanocrystals coated with L-cysteine are water-soluble and have a great potential in biomedical engineering as fluorescent labels. | URI: | http://hdl.handle.net/10261/98492 | DOI: | 10.12693/APhysPolA.122.224 | ISSN: | 0587-4246 |
Aparece en las colecciones: | (ICMS) Artículos |
Ficheros en este ítem:
Fichero | Descripción | Tamaño | Formato | |
---|---|---|---|---|
Mechanochemical_Synthesis_Characterizatio.pdf | 1,72 MB | Adobe PDF | Visualizar/Abrir |
CORE Recommender
SCOPUSTM
Citations
4
checked on 18-abr-2024
WEB OF SCIENCETM
Citations
4
checked on 21-feb-2024
Page view(s)
220
checked on 23-abr-2024
Download(s)
12
checked on 23-abr-2024
Google ScholarTM
Check
Altmetric
Altmetric
NOTA: Los ítems de Digital.CSIC están protegidos por copyright, con todos los derechos reservados, a menos que se indique lo contrario.