Femtosecond laser synthesis of nitrogen-doped luminescent carbon dots from acetonitrile

Carbon dots (CDs) is a novel promising class of nanomaterials with unique properties. Most of synthetic methods to obtain CDs employ hydrothermal synthesis, breaking down larger carbon materials by laser irradiation, arc discharge, ultrasonication or electrolysis. Here we describe a conceptually new bottom-up approach to nitrogen rich carbonaceous nanoparticles via high intensity femtosecond laser irradiation of neat acetonitrile where the latter serves a source of the doping N atoms. Selected photophysical properties of the new material and mechanism of the photoluminescence (PL) are discussed.

Automated summary

Carbon dots (CDs) are a promising class of nanomaterials being synthesized using various methods, including hydrothermal synthesis and breakdown of larger carbon materials by different techniques. This study introduces a novel bottom-up approach to obtain nitrogen-rich carbonaceous nanoparticles via femtosecond laser irradiation of acetonitrile as a source of doping N atoms. It discusses the photophysical properties of the new material and the mechanism of photoluminescence (PL).