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The emission spectra of an o-BMOQBA and o-BMQBA doped contact lens in the presence of increasing glucose concentrations (Top left and Bottom left, respectively). λex = 345 nm for o-BMOQBA and 320 nm for o-BMQBA. The corresponding emission intensity ratio at band maximum for o-BMOQBA and o-BMQBA doped contact lens in the absence, I′, and presence, I, of both Glucose and Fructose (Top right and Bottom right, respectively).
