140842.fig.005
Figure 5: UV-vis absorption spectra of C60-pyridine solution. Freshly prepared purple-pinkish solution (a), burgundy solution irradiated by green light (525 nm) for different time (b) 5 min, (c) 30 min, (d) 60 min. The inset shows the details of the spectral structure in the 520–550 nm wavelength region.