Luminescence quenching of Ru(II) complexes in polydimethylsiloxane sensors for oxygen
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...
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1999
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| Acceso en línea: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_10106030_v120_n1_p15_Bossi http://hdl.handle.net/20.500.12110/paper_10106030_v120_n1_p15_Bossi |
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paper:paper_10106030_v120_n1_p15_Bossi2023-06-08T15:59:34Z Luminescence quenching of Ru(II) complexes in polydimethylsiloxane sensors for oxygen Luminescence Oxygen Polymer Quenching Ruthenium(II) diimines 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. 1999 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_10106030_v120_n1_p15_Bossi http://hdl.handle.net/20.500.12110/paper_10106030_v120_n1_p15_Bossi |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
Luminescence Oxygen Polymer Quenching Ruthenium(II) diimines |
| spellingShingle |
Luminescence Oxygen Polymer Quenching Ruthenium(II) diimines Luminescence quenching of Ru(II) complexes in polydimethylsiloxane sensors for oxygen |
| topic_facet |
Luminescence Oxygen Polymer Quenching Ruthenium(II) diimines |
| description |
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. |
| title |
Luminescence quenching of Ru(II) complexes in polydimethylsiloxane sensors for oxygen |
| title_short |
Luminescence quenching of Ru(II) complexes in polydimethylsiloxane sensors for oxygen |
| title_full |
Luminescence quenching of Ru(II) complexes in polydimethylsiloxane sensors for oxygen |
| title_fullStr |
Luminescence quenching of Ru(II) complexes in polydimethylsiloxane sensors for oxygen |
| title_full_unstemmed |
Luminescence quenching of Ru(II) complexes in polydimethylsiloxane sensors for oxygen |
| title_sort |
luminescence quenching of ru(ii) complexes in polydimethylsiloxane sensors for oxygen |
| publishDate |
1999 |
| url |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_10106030_v120_n1_p15_Bossi http://hdl.handle.net/20.500.12110/paper_10106030_v120_n1_p15_Bossi |
| _version_ |
1768542374156304384 |