Fig. 4. (a) Time-dependent UV-Vis spectra (5 × 10–5 M MCH/CHCl3 (90 : 10)) of C1 upon light irradiation and subsequent quenching to 283 K; inset: plot of A395vs. time before (blue) and after irradiation (black) at 283 K and photographs showing opacity changes upon irradiation for 15 min. AFM images of C1 aggregates formed under equivalent conditions as for UV-Vis: (b) before and (c) after UV irradiation for 30 min at 283 K with corresponding cross-section analysis along the yellow line.
