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Proceedings Paper

Comparison between stationary intensity and lifetime luminescence measurements with fiber optic oxygen sensors containing [Ru(4.7Ph2phen)3]2+ in silicone polymer
Author(s): Birgit Hannemann; Adriana Tamachkiarowa; Christian V. Radehaus
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Paper 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.

Paper Details

Date Published: 29 September 1995
PDF: 12 pages
Proc. SPIE 2508, Chemical, Biochemical, and Environmental Fiber Sensors VII, (29 September 1995); doi: 10.1117/12.221743
Show Author Affiliations
Birgit Hannemann, Technical Univ. Chemnitz-Zwickau (Germany)
Adriana Tamachkiarowa, Technical Univ. Chemnitz-Zwickau (Germany)
Christian V. Radehaus, Technical Univ. Chemnitz-Zwickau (Germany)

Published in SPIE Proceedings Vol. 2508:
Chemical, Biochemical, and Environmental Fiber Sensors VII
Annamaria V. Scheggi, Editor(s)

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