title: Layered double hydroxides as carriers for quantum dots@silica nanospheres.
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 of 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.
authors: Institute of Chemical Research of Catalonia-ICIQ, Avinguda del Paisos Catalans 16, 43007 Tarragona, Spain.
authors: Georgiana
authors: G
authors: Stoica
authors: Iván
authors: I
authors: Castelló Serrano
authors: Albert
authors: A
authors: Figuerola
authors: Irati
authors: I
authors: Ugarte
authors: Roberto
authors: R
authors: Pacios
authors: Emilio
authors: E
authors: Palomares
mesh_terms: D000536:Aluminum Hydroxide / Q000737:chemistry; D006801:Humans; D006863:Hydrogen-Ion Concentration; D006878:Hydroxides / Q000737:chemistry*; D007668:Kidney / Q000187:drug effects; D008099:Liver / Q000187:drug effects; D008276:Magnesium Hydroxide / Q000737:chemistry; D054118:Nanospheres / Q000737:chemistry* / Q000633:toxicity; D045663:Quantum Dots; D012822:Silicon Dioxide / Q000737:chemistry*
chemical_list: D006878:Hydroxides; C010467:hydrotalcite; D000536:Aluminum Hydroxide; D012822:Silicon Dioxide; D008276:Magnesium Hydroxide