Comparison between stationary intensity and lifetime luminescence measurements with fiber optic oxygen sensors containing [Ru(4.7Ph2phen)3]2+ in silicone polymer

Birgit Hannemann; Adriana Tamachkiarowa; Christian V. Radehaus

doi:10.1117/12.221743

29 September 1995 Comparison between stationary intensity and lifetime luminescence measurements with fiber optic oxygen sensors containing [Ru(4.7Ph₂phen)₃]²⁺ in silicone polymer

Birgit Hannemann, Adriana Tamachkiarowa, Christian V. Radehaus

Author Affiliations +

Proceedings Volume 2508, Chemical, Biochemical, and Environmental Fiber Sensors VII; (1995) https://doi.org/10.1117/12.221743
Event: European Symposium on Optics for Environmental and Public Safety, 1995, Munich, Germany

Abstract

A behavior often registered in intensity based measurements of such sensors are the downcurved STERN-VOLMER-plots, which result in problems of reproducibility and calibration, especially between different sensors of the same type. Another effect is the disagreement between lifetime- and intensity-based STERN-VOLMER-plots, which should be the same in case of dynamic quenching. For a fiber optic system with the [Ru(4.7Ph₂phen)₃]²⁺-complex in polydimethylsiloxan on the fiber tip mono- and multi-exponential decay models have been examined. There are no significant differences between monoexponential fitted lifetimes and weighted mean lifetimes from multi-exponential models. STERN-VOLMER-plots from lifetime measurements are in good agreement with intensity based measurements on fresh prepared samples.

Citation Download Citation

Birgit Hannemann, Adriana Tamachkiarowa, and Christian V. Radehaus "Comparison between stationary intensity and lifetime luminescence measurements with fiber optic oxygen sensors containing [Ru(4.7Ph₂phen)₃]²⁺ in silicone polymer", Proc. SPIE 2508, Chemical, Biochemical, and Environmental Fiber Sensors VII, (29 September 1995); https://doi.org/10.1117/12.221743

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