ABSTRACT
The wide-ranging applications of carbon dots (CDs), which can be developed using either green or chemical precursors, have been made possible due to their reported properties and the various precursors that have been identified. This has opened up new opportunities for the development of high-quality CDs and their use in optoelectronic devices, bioimaging, and other applications. Green precursors can be derived from fruits, vegetables, flowers, leaves, seeds, stems, crop residues, fungi/bacteria species, and waste products, while chemical precursors can be categorized as either acid reagents or non-acid reagents. It provides a brief review of the past ten years of CD synthesis using both green and chemical precursors, as well as the use of CDs as sensing materials in biomedical applications. This comprehensive review will be a valuable resource for researchers who are interested in synthesizing high-quality CDs for a variety of applications.
