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Abstract:

The luminescence quenching of ruthenium(II)-tris(1,10-phenanthroline) and ruthenium(II)-tris(4,7-diphenyl-1,10-phenanthroline) by oxygen in films of commercial polydimethylsiloxane was studied by steady state and time-resolved methods. The decay kinetics is not monoexponential in the absence and in the presence of oxygen. It can be accurately described in all cases by the function exp(-Bt1/2), a particular case of the stretched exponential behaviour often found in solid media. The steady state and integrated time-resolved quenching efficiency coincide and show a downward curvature as a function of oxygen partial pressure. This dependence is explained by assuming a Freundlich type adsorption of oxygen in the dopants of the polymer. Both complexes render the same dependence of adsorbed oxygen on its partial pressure.

Registro:

Documento: Artículo
Título:Luminescence quenching of Ru(II) complexes in polydimethylsiloxane sensors for oxygen
Autor:Bossi, M.L.; Daraio, M.E.; F. Aramendía, P.
Filiación:Depto. de Quim. Inorgánica, Analitica Y Quim. Fis., Fac. Cie. E., Buenos Aires, Argentina
Palabras clave:Luminescence; Oxygen; Polymer; Quenching; Ruthenium(II) diimines
Año:1999
Volumen:120
Número:1
Página de inicio:15
Página de fin:21
DOI: http://dx.doi.org/10.1016/S1010-6030(98)00418-3
Título revista:Journal of Photochemistry and Photobiology A: Chemistry
Título revista abreviado:J. Photochem. Photobiol. A Chem.
ISSN:10106030
CODEN:JPPCE
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_10106030_v120_n1_p15_Bossi

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Citas:

---------- APA ----------
Bossi, M.L., Daraio, M.E. & F. Aramendía, P. (1999) . Luminescence quenching of Ru(II) complexes in polydimethylsiloxane sensors for oxygen. Journal of Photochemistry and Photobiology A: Chemistry, 120(1), 15-21.
http://dx.doi.org/10.1016/S1010-6030(98)00418-3
---------- CHICAGO ----------
Bossi, M.L., Daraio, M.E., F. Aramendía, P. "Luminescence quenching of Ru(II) complexes in polydimethylsiloxane sensors for oxygen" . Journal of Photochemistry and Photobiology A: Chemistry 120, no. 1 (1999) : 15-21.
http://dx.doi.org/10.1016/S1010-6030(98)00418-3
---------- MLA ----------
Bossi, M.L., Daraio, M.E., F. Aramendía, P. "Luminescence quenching of Ru(II) complexes in polydimethylsiloxane sensors for oxygen" . Journal of Photochemistry and Photobiology A: Chemistry, vol. 120, no. 1, 1999, pp. 15-21.
http://dx.doi.org/10.1016/S1010-6030(98)00418-3
---------- VANCOUVER ----------
Bossi, M.L., Daraio, M.E., F. Aramendía, P. Luminescence quenching of Ru(II) complexes in polydimethylsiloxane sensors for oxygen. J. Photochem. Photobiol. A Chem. 1999;120(1):15-21.
http://dx.doi.org/10.1016/S1010-6030(98)00418-3