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Mirenda, M.; Levi, V.; Bossi, M.L.; Bruno, L.; Bordoni, A.V.; Regazzoni, A.E.; Wolosiuk, A. "Temperature response of luminescent tris(bipyridine)ruthenium(II)-doped silica nanoparticles" (2013) Journal of Colloid and Interface Science. 392(1):96-101
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Abstract:

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. 130nm 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. © 2012 Elsevier Inc.

Registro:

Documento: Artículo
Título:Temperature response of luminescent tris(bipyridine)ruthenium(II)-doped silica nanoparticles
Autor:Mirenda, M.; Levi, V.; Bossi, M.L.; Bruno, L.; Bordoni, A.V.; Regazzoni, A.E.; Wolosiuk, A.
Filiación:Gerencia Química, Centro Atómico Constituyentes, Comisión Nacional de Energía Atómica, Av. Gral. Paz 1499, B1650KNA San Martín, Buenos Aires, Argentina
Departamento de Química Inorgánica, Analítica y Química Física, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Pab. II, C1428EHA Buenos Aires, Argentina
Laboratorio de Dinámica Intracelular, Departamento de Química Biológica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Pab. II, C1428EHA Buenos Aires, Argentina
Grupo de Dinámica y Transporte Intracelular, Departamento de Física, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Pab. I, C1428EHA Buenos Aires, Argentina
Palabras clave:Doped silica; Fluorescence quenching; Fluorescent nanoparticles; Luminescent temperature nanosensors; Tris(bipyridine)ruthenium(II); Advanced applications; Bipyridines; Fluorescence measurements; Fluorescence quenching; Fluorescent nanoparticles; Microenvironments; Photophysical properties; Scanning confocal microscopy; Silica nanoparticles; Steady-state emissions; Temperature imaging; Temperature response; Thermal process; Confocal microscopy; Fluorescence; Nanoparticles; Quenching; Silica; Ruthenium; anion; nanoparticle; oxygen; ruthenium; silicon dioxide; article; confocal microscopy; fluorescence analysis; luminescence; microenvironment; particle size; pH; priority journal; scanning confocal microscopy; sensitivity analysis; steady state; temperature dependence; thermal analysis; 2,2'-Dipyridyl; Luminescence; Molecular Structure; Nanoparticles; Particle Size; Silicon Dioxide; Surface Properties; Temperature
Año:2013
Volumen:392
Número:1
Página de inicio:96
Página de fin:101
DOI: http://dx.doi.org/10.1016/j.jcis.2012.09.059
Título revista:Journal of Colloid and Interface Science
Título revista abreviado:J. Colloid Interface Sci.
ISSN:00219797
CODEN:JCISA
CAS:oxygen, 7782-44-7; ruthenium, 7440-18-8; silicon dioxide, 10279-57-9, 14464-46-1, 14808-60-7, 15468-32-3, 60676-86-0, 7631-86-9; 2,2'-Dipyridyl, 551W113ZEP; Silicon Dioxide, 7631-86-9; tris(2,2'-bipyridine)ruthenium II, 15158-62-0
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00219797_v392_n1_p96_Mirenda

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Citas:

---------- APA ----------
Mirenda, M., Levi, V., Bossi, M.L., Bruno, L., Bordoni, A.V., Regazzoni, A.E. & Wolosiuk, A. (2013) . Temperature response of luminescent tris(bipyridine)ruthenium(II)-doped silica nanoparticles. Journal of Colloid and Interface Science, 392(1), 96-101.
http://dx.doi.org/10.1016/j.jcis.2012.09.059
---------- CHICAGO ----------
Mirenda, M., Levi, V., Bossi, M.L., Bruno, L., Bordoni, A.V., Regazzoni, A.E., et al. "Temperature response of luminescent tris(bipyridine)ruthenium(II)-doped silica nanoparticles" . Journal of Colloid and Interface Science 392, no. 1 (2013) : 96-101.
http://dx.doi.org/10.1016/j.jcis.2012.09.059
---------- MLA ----------
Mirenda, M., Levi, V., Bossi, M.L., Bruno, L., Bordoni, A.V., Regazzoni, A.E., et al. "Temperature response of luminescent tris(bipyridine)ruthenium(II)-doped silica nanoparticles" . Journal of Colloid and Interface Science, vol. 392, no. 1, 2013, pp. 96-101.
http://dx.doi.org/10.1016/j.jcis.2012.09.059
---------- VANCOUVER ----------
Mirenda, M., Levi, V., Bossi, M.L., Bruno, L., Bordoni, A.V., Regazzoni, A.E., et al. Temperature response of luminescent tris(bipyridine)ruthenium(II)-doped silica nanoparticles. J. Colloid Interface Sci. 2013;392(1):96-101.
http://dx.doi.org/10.1016/j.jcis.2012.09.059