Fig. 4: Solution pH-dependent 1O2 generation of TIF.
From: Halo-fluorescein for photodynamic bacteria inactivation in extremely acidic conditions
a The 1O2 phosphorescence emission of TIF under different pH; and b the 1O2 phosphorescence emission intensity of TIF under pH 6.5 or pH 2.5, followed by different light irradiance.
