Structure of PARPi-FL, schematic diagram and characterization of PARPi-FL NE. (a) Structure of a PARPi-FL molecule, which is the fluorescent version of the FDA-approved olaparib. (b) Schematic diagram of the nanoemulsion scaffold containing lipids, oil, and PARPi-FL. (c) Size-exclusion chromatography of PARPi-FL and (d) size-exclusion of PARPi-FL NE; absorbance was measured at 510 nm (orange), fluorescence, excitation = 498 nm, emission = 510 nm (black).