Tao Songyuan, Feng Tanglue, Zheng Chengyu, Zhu Shoujun, Yang Bai
State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun 130012, People's Republic of China.
Laboratory of Molecular Imaging and Nanomedicine, National Institute of Biomedical Imaging and Bioengineering, National Institutes of Health, 35 Convent Drive, Bethesda, Maryland 20892, United States.
J Phys Chem Lett. 2019 Sep 5;10(17):5182-5188. doi: 10.1021/acs.jpclett.9b01384. Epub 2019 Aug 22.
Carbon dots (CDs), as emerging luminescent nanomaterials, possess excellent but complex properties, bringing about extensive attention and a lot of controversy. In this Perspective, we put forward the concept of "carbonized polymer dots" and emphasize the important role of polymerization and carbonization during the formation of CDs. We explore the common characters and clarify the complicated relationship of CDs, based on the reasonable classification of graphene quantum dots, carbon quantum dots, and carbonized polymer dots. Moreover, different perspectives are provided for comprehensive analysis about the essence of CDs, including quantum dots, molecules, and polymers. The photoluminescence mechanism has been classified into molecule state, carbon core state, surface/edge state, and cross-link enhanced emission effect for further understanding of complicated phenomena.
碳点（CDs）作为新兴的发光纳米材料，具有优异但复杂的性质，引起了广泛关注和诸多争议。在这篇综述中，我们提出了“碳化聚合物点”的概念，并强调了聚合和碳化在碳点形成过程中的重要作用。我们基于对石墨烯量子点、碳量子点和碳化聚合物点的合理分类，探索了碳点的共同特征并阐明了它们之间复杂的关系。此外，还从不同角度对碳点的本质进行了综合分析，包括量子点、分子和聚合物。光致发光机制被分为分子态、碳核态、表面/边缘态和交联增强发射效应，以便进一步理解复杂的现象。
