Fig. 8. (a) Comparative photooxidation of only 1,3-diphenylisobenzofuran (DPBF) (25 μM) in methanol (red dot), C2 (5 μM) + DPBF (black square) and methylene blue (5 μM) + DPBF (blue triangle) in methanol degassed by O2. Excitation at 366 nm for C2 and DPBF. (b) DIC and confocal fluorescence images of live MCF7 cells treated with C2 and exposed to photoirradiation at 405 nm for 30 min. The cells were treated with DCFDA and fluorescence images were obtained at 529 nm after excitation at 495 nm. The central tile represents the field which was exposed to the laser whereas the surrounding tiles represent the fields not exposed.
