Fig. 2. (A) The PL spectra of in situ generated 3a in aqueous solution under irradiation at 365 nm for 0–20 min. (B) Plot of relative PL intensity I/I0 at 576 nm versus the irradiation time. (C) The UV-Vis spectra of in situ generated 3a in aqueous solution under irradiation at 365 nm for 0–20 min. (D) Plot of the relative UV-Vis absorption intensity I/I0 at 353 nm versus the irradiation time. [3a] = 100 μM. (E) Bright-field and fluorescence images of 3a in the solid state taken under white light and UV irradiation (365 nm).
