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Proceedings Paper

Layered double hydroxides as carriers for quantum dots@silica nanospheres
Author(s): Georgiana Stoica; Iván Castelló Serrano; Emilio Palomares
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Paper Abstract

Quantum dot-hydrotalcite layered nanoplatforms were successfully prepared following a one-pot synthesis. The process is very fast and a priori delamination of hydrotalcite is not a prerequisite for the intercalation of quantum dots. The novel materials were extensively characterized by X-ray diffraction, thermogravimetry, infrared spectroscopy, transmission electron microscopy, true color fluorescence microscopy, photoluminescence, and nitrogen adsorption. The quantum dot-hydrotalcite nanomaterials display extremely high stability in mimicking physiological media such as saline serum (pH 5.5) and PBS (pH 7.2). Yet, quantum dot release from the solid structure is noted. In order to prevent the leaking of quantum dots we have developed a novel strategy which consists on using tailor made double layered hydrotalcites as protecting shells for quantum dots embedded into silica nanospheres without changing either the materials or the optical properties.

Paper Details

Date Published: 22 February 2013
PDF: 13 pages
Proc. SPIE 8595, Colloidal Nanocrystals for Biomedical Applications VIII, 85951A (22 February 2013); doi: 10.1117/12.2000407
Show Author Affiliations
Georgiana Stoica, Institute of Chemical Research of Catalonia (Spain)
Iván Castelló Serrano, Institute of Chemical Research of Catalonia (Spain)
Emilio Palomares, Institute of Chemical Research of Catalonia (Spain)
Catalan Institution for Research and Advanced Studies (Spain)

Published in SPIE Proceedings Vol. 8595:
Colloidal Nanocrystals for Biomedical Applications VIII
Wolfgang J. Parak; Marek Osinski; Kenji Yamamoto, Editor(s)

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