Figure 2.

Left: UV/Vis absorption spectrum of 3 (0.125 mm, dashed line) in deoxygenated methanol, during (dotted lines) and after (thick solid line) irradiation at 365 nm, and after the subsequent addition of acetonitrile (2.5 vol %; black dash–dotted line). Right: Absorbance at 310 and 480 nm over time in the dark and under irradiation.