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 language | English |
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| Pages (from-to) | 101-108 |
| Journal | Analytica Chimica Acta |
| Volume | 487 |
| Issue number | 1 |
| Publication status | Published - Jul 2003 |