Add time:08/13/2019         Source:sciencedirect.com

A thin film dissolved oxygen sensor was fabricated by trapping ERYTHROSIN B (cas 16423-68-0) 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 590 nm, 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.

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