Characterization of phosphorescence oxygen sensor based on erythrosin B in sol–gel silica in wide pressure and temperature ranges
2001; Elsevier BV; Volume: 73; Issue: 2-3 Linguagem: Inglês
10.1016/s0925-4005(00)00695-x
ISSN1873-3077
Autores Tópico(s)Molecular Sensors and Ion Detection
ResumoRoom temperature phosphorescence emission of erythrosin B in sol–gel silica is studied over the oxygen pressure range from 10−6 to 1000 mbar. Quenching by oxygen is significant over the entire range. The Stern–Volmer (SV) intensity data can be very well fitted using the two-site model. The temperature dependence of the phosphorescence and the delayed fluorescence are examined from −173 to 200°C at an oxygen pressure of 0.015 mbar. The phosphorescence and delayed fluorescence show opposite trends of temperature dependence, which can be exploited for temperature compensation of the sensor probe.
Referência(s)