Pyrene Chemisorption Film on an Alumina Plate as an Optical Oxygen-Sensing Material

An optical oxygen sensor based on the fluorescence quenching of pyrene-1-butyric acid (PBA) chemisorption film onto an alumina plate was developed. The fluorescence intensity of PBA film decreased with increasing oxygen concentration. The PBA film sensor is calibrated by a modified Stern–Volmer equation.