Figure 2.

Photodegradation of AtRal with visible light leads to AtRal depletion and accumulation of degradation products. Absorption spectra of AtRal before irradiation and after indicated times of exposure to 12 mW cm⁻² of visible light (a). Absorbance spectra obtained after subtraction of AtRal contribution based on absorbance at 380 (b) and 450 nm (c). Ratios of absorbances at 450 and 337 nm as a function of the photodegradation time (d). Absorbances at 380 and 450 nm expressed as the percentage of the initial absorbances at the corresponding wavelengths as a function of the photodegradation time (e). Absorbance at 337 nm of the degradation products (from part c) as a function of the photodegradation time (f).