Thin film dissolved oxygen sensor based on platinum octaethylporphyrin encapsulated in an elastic fluorinated polymer

A robust thin film dissolved oxygen sensor was fabricated by encapsulating platinum octaethylporphyrin (PtOEP) in an oxygen permeable elastic fluorinated co-polymer matrix. Phosphorescence, which was partially quenched by dissolved oxygen, was observed when the sensor was immersed in water. Aggregat...

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Bibliographic Details
Published in:Analytica chimica acta 2004-01, Vol.502 (1), p.1-6
Main Authors: Gillanders, R.N., Tedford, M.C., Crilly, P.J., Bailey, R.T.
Format: Article
Language:English
Subjects:
Analytical chemistry
Chemistry
Dissolved oxygen
Dye aggregation
Exact sciences and technology
Fluorinated polymer
General, instrumentation
Langmuir isotherm
Phosphorescence
Platinum octaethylporphyrin
Sensor
Spectrometric and optical methods
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Summary:A robust thin film dissolved oxygen sensor was fabricated by encapsulating platinum octaethylporphyrin (PtOEP) in an oxygen permeable elastic fluorinated co-polymer matrix. Phosphorescence, which was partially quenched by dissolved oxygen, was observed when the sensor was immersed in water. Aggregation of the dye was observed at elevated temperatures. Dye aggregate phosphorescence was not or only partially quenched by dissolved oxygen. The downward-turning Stern–Volmer plot was well fitted by a Langmuir adsorption isotherm. Good sensitivity, rapid response and photostability were observed for this detector.
ISSN:0003-2670
1873-4324
DOI:10.1016/j.aca.2003.09.053