Characterization of a fluorescent sol-gel encapsulated erythrosin B dissolved oxygen sensor

R. T. Bailey, F. R. Cruickshank, G. Deans, R. N. Gillanders, M.C. Tedford

Research output: Contribution to journalArticlepeer-review

31 Citations (Scopus)

Abstract

A thin film dissolved oxygen sensor was fabricated by trapping erythrosin B in a sol-gel matrix. No phosphorescence was observed when the sensor was immersed in water. Very weak phosphorescence was observed when erythrosin B was dissolved in aqueous ethanol and acetone solutions. However, fluorescence at 590nm, which was efficiently quenched by dissolved oxygen, was observed from the doped sol-gel sensor in water. A singlet oxygen feedback mechanism was proposed. Good sensitivity and stability were observed for this detector.
Original languageEnglish
Pages (from-to)101-108
Number of pages8
JournalAnalytica Chimica Acta
Volume487
Issue number1
DOIs
Publication statusPublished - 1 Jul 2003
Externally publishedYes

Keywords

  • Dissolved oxygen
  • Erythrosin B
  • Fluorescence
  • Sensor
  • Sol-gel

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