Artículo
Silver Nanoparticle-Mesoporous Oxide Nanocomposite Thin Films: A Platform for Spatially Homogeneous SERS-Active Substrates with Enhanced Stability
Wolosiuk, Alejandro
; Tognalli, Nicolas Gerardo
; Martínez, Eduardo David
; Granada, Mara
; Fuertes, María Cecilia
; Troiani, Horacio Esteban
; Bilmes, Sara A.; Fainstein, Alejandro
; Soler Illia, Galo Juan de Avila Arturo
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Fecha de publicación:
03/2014
Editorial:
American Chemical Society
Revista:
Acs Applied Materials & Interfaces
ISSN:
1944-8244
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
We introduce a nanoparticle-mesoporous oxide thin film composite (NP-MOTF) as low-cost and straightforward sensing platforms for surface-enhanced Raman Spectroscopy (SERS). Titania, zirconia, and silica mesoporous matrices templated with Pluronics F-127 were synthesized via evaporation-induced self-assembly and loaded with homogeneously dispersed Ag nanoparticles by soft reduction or photoreduction. Both methods give rise to uniform and reproducible Raman signals using 4-mercaptopyridine as a probe molecule. Details on stability and reproducibility of the Raman enhancement are discussed. Extensions in the design of these composite structures were explored including detection of nonthiolated molecules, such as rhodamine 6-G or salicylic acid, patterning techniques for locating the enhancement regions and bilayered mesoporous structures to provide additional control on the environment, and potential size-selective filtration. These inorganic oxide–metal composites stand as extremely simple, reproducible, and versatile platforms for Raman spectroscopy analysis.
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Articulos(CCT - PATAGONIA NORTE)
Articulos de CTRO.CIENTIFICO TECNOL.CONICET - PATAGONIA NORTE
Articulos de CTRO.CIENTIFICO TECNOL.CONICET - PATAGONIA NORTE
Articulos(INQUIMAE)
Articulos de INST.D/QUIM FIS D/L MATERIALES MEDIOAMB Y ENERGIA
Articulos de INST.D/QUIM FIS D/L MATERIALES MEDIOAMB Y ENERGIA
Articulos(SEDE CENTRAL)
Articulos de SEDE CENTRAL
Articulos de SEDE CENTRAL
Citación
Soler Illia, Galo Juan de Avila Arturo; Fainstein, Alejandro; Bilmes, Sara A.; Troiani, Horacio Esteban; Fuertes, María Cecilia; Granada, Mara; et al.; Silver Nanoparticle-Mesoporous Oxide Nanocomposite Thin Films: A Platform for Spatially Homogeneous SERS-Active Substrates with Enhanced Stability; American Chemical Society; Acs Applied Materials & Interfaces; 6; 7; 3-2014; 5263-5272
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