The luminescence photostability of carbon nanodots synthesized by the plasma method from a glucose solution after UV radiation

Carbon nanodots (CNDs) were synthesized by the microplasma method using a glucose solution as a precursor. The photoluminescence of CNDs before and after UV irradiation was studied. The spectral and kinetic properties of the synthesized CNDs were studied using a MicroTime 200 confocal scanning luminescence microscope. It was experimentally demonstrated that the short component (tau 1 ) of luminescence refers to C=O bonds on the CND surface. A significant decrease in the luminescence intensity of CNDs after UV irradiation due to a decrease in oxygen-containing groups on the surface of carbon dots was found.