Cystine-capped CdSe@ZnS nanocomposites: mechanochemical synthesis, properties, and the role of capping agent

Cystine-capped CdSe@ZnS nanocomposites were synthesized mechanochemically with the aim to prepare a material which could be used in medicine for biosensing applications. Although synthesized CdSe@ZnS nanocomposites were capped with l -cysteine, cystine was formed from l -cysteine during the milling...

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Bibliographic Details
Published in:Journal of materials science 2013-03, Vol.48 (6), p.2424-2432
Main Authors: Baláž, Matej, Baláž, Peter, Tjuliev, Georgi, Zubrík, Anton, Sayagués, María Jesús, Zorkovská, Anna, Kostova, Nina
Format: Article
Language:English
Subjects:
Cadmium selenides
Capping
Characterization and Evaluation of Materials
Chemistry and Materials Science
Classical Mechanics
Crystallography and Scattering Methods
Cysteine
Cystine
Materials Science
Nanocomposites
Organic chemistry
Polymer Sciences
Solid Mechanics
Synthesis
X ray photoelectron spectroscopy
Zinc sulfide
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Summary:Cystine-capped CdSe@ZnS nanocomposites were synthesized mechanochemically with the aim to prepare a material which could be used in medicine for biosensing applications. Although synthesized CdSe@ZnS nanocomposites were capped with l -cysteine, cystine was formed from l -cysteine during the milling process. It was proven that water plays the key role in this oxidative transformation. The novel material was characterized by the complex of physico-chemical methods (FTIR, XPS, SEM, EDX, surface area measurements) and CHNS analysis. The leakage of Cd 2+ and Zn 2+ ions into physiological solution was also studied.
ISSN:0022-2461
1573-4803
DOI:10.1007/s10853-012-7029-3