A review on carbon quantum dots: Synthesis, photoluminescence mechanisms and applications

作者：Likang Zhang, Xue Yang, Zhifu Yin, Linlin Sun · 发表于：Luminescence · 年份：2022 · DOI：10.1002/bio.4351 · 被引用次数：122 · 研究领域：Carbon and Quantum Dots Applications、Nanocluster Synthesis and Applications、Quantum Dots Synthesis And Properties

Carbon quantum dots (CQDs), having outstanding biocompatibility, attractive catalytic performance, excellent optical properties, and valuable environment friendliness, are emerging as a new paradigm to design luminescent devices and show great potential in application fields such as biomedical sensors, optical and photonic devices. Furthermore, CQDs are known as one of the most promising carbon-based nanomaterials in the 21st century. Therefore, they have attracted a lot of attention since they were first discovered in 2004. In this review, we explain the accepted photoluminescence mechanism of CQDs, including fluorescence and phosphorescence. There are two main types of synthesis strategies: top-down approach and bottom-up approach. At the same time, the main application fields, including ion detection, anti-counterfeiting, biological imaging, food safety, sensors, lubrication additives, are reviewed. Finally, the existing bottlenecks, pending problems and prospects for the future of CQDs are discussed.