Artículo
Temperature response of luminescent tris(bipyridine)ruthenium(II)-doped silica nanoparticles
Mirenda, Martin
; Levi, Valeria
; Bossi, Mariano Luis
; Bruno, Luciana
; Bordoni, Andrea Veronica
; Regazzoni, Alberto Ernesto
; Wolosiuk, Alejandro
Fecha de publicación:
02/2013
Editorial:
Elsevier Inc
Revista:
Journal Of Colloid And Interface Science
ISSN:
0021-9797
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
Nanoparticle-based temperature imaging is an emerging field of advanced applications. Herein, the sensitivity of the phosphorescence of tris(bipyridine)ruthenium(II)-doped silica nanoparticles towards temperature is studied. 130 nm size particles were prepared by a modification of Stöber’s method, that allows the incorporation of Ru[(bpy)3]2+ into the outer particle shell. The entrapped Ru[(bpy)3]2+ retains its photophysical properties, yet the emission of the particles is not affected by the presence of O2, neither by anionic quenchers; quenching by MV2+, on the other hand, is strongly dependent on pH. Between 20 and 60 °C, the steady-state emission of the particles decreases linearly with increasing temperature. The slope of the straight line diminishes slightly on thermal cycling, but soon stabilizes. Fluorescence measurements by scanning confocal microscopy indicate that the silica nanoparticles doped with Ru[(bpy)3]2+ can indeed be employed to probe thermal processes in micro-environments.
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Colecciones
Articulos(IFIBA)
Articulos de INST.DE FISICA DE BUENOS AIRES
Articulos de INST.DE FISICA DE BUENOS AIRES
Articulos(SEDE CENTRAL)
Articulos de SEDE CENTRAL
Articulos de SEDE CENTRAL
Citación
Mirenda, Martin; Levi, Valeria; Bossi, Mariano Luis; Bruno, Luciana; Bordoni, Andrea Veronica; et al.; Temperature response of luminescent tris(bipyridine)ruthenium(II)-doped silica nanoparticles; Elsevier Inc; Journal Of Colloid And Interface Science; 392; 2-2013; 96-101
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