Carbon Quantum Dots

Abstract

Quantum dots (QDs), in general, are zero-dimensional (0D) semiconducting nanosized entities whose optical and electronic behavior is intimately linked to their size. Apart from the well-known variety of chalcogenide QDs, a new league of carbon and graphene QDs has caused a major stir in the scientific community. These colorful forms of carbon are being actively pursued for their strongly tunable absorbance and fluorescent characteristics. Furthermore, they exhibit excellent biocompatibility, tunable surface functionalities, and simple synthesis routes, which have further increased their popularity. Owing to low cytotoxicity and chemical inertness, these 0D carbons have found applications in biochemical sensing, bioimaging, photovoltaics, catalysis, and drug delivery. © 2024 selection and editorial matter, Piyush Kumar Sonkar and Vellaichamy Ganesan; individual chapters, the contributors.