Photodynamic Therapy in HeLa Cells Incubated with Riboflavin and Pectin‐coated Silver Nanoparticles

Riboflavin (Rf) is an endogenous photosensitizer, which can participate in Type I and Type II processes. We have recently shown that the yield of the triplet excited states of Rf is enhanced in the presence of pectin‐coated silver nanoparticles (Pec@Ag NP ) due to formation of a complex between Rf and Pec@Ag NP (Rf‐Pec@Ag NP ). Consequently, under aerobic conditions, the amounts of singlet molecular oxygen and superoxide radical anion generated...