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Highly Fluorescent Silicon Nanocrystals Stabilized in Water Using Quatsomes

AutorSilbaugh, Dorothy A.; Ferrer Tasies, Lidia P. ; Faraudo, Jordi ; Veciana, Jaume ; Ventosa, Nora ; Korgel, Brian A.
Palabras claveQuantum dots
Gold nanoparticles
Molecular-dynamics
Room-temperature
Aqueous-solution
Vesicles
Liposomes
Nanomedicine
Sonication
Fecha de publicación19-dic-2017
EditorAmerican Chemical Society
CitaciónLangmuir 33(50): 14366-14377 (2017)
ResumenFluorescent silicon (Si) nanocrystals (2.8 nm diameter) were incorporated into surfactant assemblies of cetyltrimethylammonium bromide (CTAB) and cholesterol, called quatsomes. In water, the quatsome-Si nanocrystal assemblies remain fluorescent and well-dispersed for weeks. In contrast to Si nanocrystals, alkanethiol-capped gold (Au) nanocrystals do not form stable dispersions in water with quatsomes. Cryogenic transmission electron microscopy (cryo-TEM) confirmed that the Si nanocrystal-quatsome structures do not change over the course of several weeks. The long-term stability of the Si nanocrystal-quatsome assemblies, their fluorescence, and biocompatibility makes them attractive candidates for medical applications.
Versión del editorhttp://dx.doi.org/10.1021/acs.langmuir.7b03539
URIhttp://hdl.handle.net/10261/162283
ISSN0743-7463
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