Fast-response sensors for dissolved oxygen

Sheila Smith; Alan Hamill; Mahesh Uttamlal; Michael Campbell; David Bailly

doi:10.1117/12.372962

9 December 1999 Fast-response sensors for dissolved oxygen

Sheila Smith, Alan Hamill, Mahesh Uttamlal, Michael Campbell, David Bailly

Proceedings Volume 3860, Fiber Optic Sensor Technology and Applications; (1999) https://doi.org/10.1117/12.372962
Event: Photonics East '99, 1999, Boston, MA, United States

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.

Citation Download Citation

Sheila Smith, Alan Hamill, Mahesh Uttamlal, Michael Campbell, and David Bailly "Fast-response sensors for dissolved oxygen", Proc. SPIE 3860, Fiber Optic Sensor Technology and Applications, (9 December 1999); https://doi.org/10.1117/12.372962

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