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Proceedings Paper

Fast-response sensors for dissolved oxygen
Author(s): Sheila Smith; Alan Hamill; Mahesh Uttamlal; Michael Campbell; David Bailly
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Paper Abstract

In this work we have been developing fast response optical sensors for dissolved oxygen determination based on measuring the luminescence lifetime of a metalloporphyrin polymer. The sensor is produced by electropolymerization of the metalloporphyrin monomer units of platinum tetraphenylporphyrin (Pt-TPP), platinum octaethylporphyrin (Pt-OEP), palladium tetraphenylporphyrin (Pd-TPP) or palladium octaethylporphyrin (Pd-OEP). The polymerization process results in films which are in the region of micrometers thick. The Stern-Volmer quenching constants as determined from luminescence lifetime measurements for these sensors range from 0.90 (mg 1-1)-1) for Pt-TPP to 1.83 (mg 1-1)-1) for Pd-OEP. The response time of these sensors to a step change from an oxygen free to an oxygen saturated solution is in the millisecond region.

Paper Details

Date Published: 9 December 1999
PDF: 7 pages
Proc. SPIE 3860, Fiber Optic Sensor Technology and Applications, (9 December 1999); doi: 10.1117/12.372962
Show Author Affiliations
Sheila Smith, Glasgow Caledonian Univ. (United Kingdom)
Alan Hamill, Glasgow Caledonian Univ. (Germany)
Mahesh Uttamlal, Glasgow Caledonian Univ. (United Kingdom)
Michael Campbell, Glasgow Caledonian Univ. (United Kingdom)
David Bailly, Glasgow Caledonian Univ. (United Kingdom)

Published in SPIE Proceedings Vol. 3860:
Fiber Optic Sensor Technology and Applications
Michael A. Marcus; Brian Culshaw, Editor(s)

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