Figure 4

(a) CL emission of the luminol-TBD-system (c(luminol) = 7.5 × 10⁻² mol L⁻¹, c(TBD) = 37.5 × 10⁻² mol L⁻¹) in DMSO in the presence of radical scavengers (c = 2.5 × 10⁻² mol L⁻¹) at ambient temperature, triggered by H₂O₂. (b) EPR spectra of DMPO (grey line) and the luminol-TBD-system with DMPO after the addition of H₂O₂ (black line). The signals can be assigned to the different DMPO-radical-products: DMPO-CH₃ (black dot), DMPO-OH (red square) and DMPO-OOH (blue rhomb).