Inspired by enol-degradation of luciferin, a new dual mode oxygen sensing with alternant change of color and fluorescence has been developed to estimate rapidly the oxygen concentration. Based on the screening of ten methyl ketone molecules with different functional groups, molecule M5 with obvious fluorescence change and high degradation speed is selected and studied in detail by UV-Vis and fluorescence spectroscopy. The degradative mechanism containing four-member ring intermediate has been proved by MS and DFT calculation. And the sensor strip prepared by molecule M5 exhibits high selective and perfect optical properties to detect the oxygen concentration without delicate instrument. This oxygen sensor will not only accelerate the development of oxygen sensor, but will also help to understand the mechanism of luciferin bio-degradation.
Zhang, Y. M., Zhang, J., & Zhang, S. X. A. (2017). Luciferin inspired oxygen sensing with alternant change of color and fluorescence. Dyes and Pigments, 138, 1–6. https://doi.org/10.1016/j.dyepig.2016.11.016