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Reaction of the singlet oxygen generated by photosensitization with 47 μM 1,3-diphenyl-isobenzofuran (DPBF) in dimethyl sulfoxide (DMSO) in the presence of erythrosine–luminol conjugate 11. For the first 8 min, the solution was kept in the dark; thereafter, it was irradiated with a 520 nm light-emitting diode (LED) array for 16 min. The total volume was adjusted to 3.0 mL. Absorbance spectra were recorded in 2 min intervals.
