气候变化领域集成服务门户(CCPortal): Insights into photoluminescence mechanisms of carbon dots: advances and perspectives

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DOI	10.1016/j.scib.2020.12.015
	Insights into photoluminescence mechanisms of carbon dots: advances and perspectives
	Ai L.; Yang Y.; Wang B.; Chang J.; Tang Z.; Yang B.; Lu S.
发表日期	2021
ISSN	20959273
起始页码	839
结束页码	856
卷号	66 期号:8
英文摘要	Carbon dots (CDs) are potentially useful in many areas such as bioimaging, light-emitting diodes, and sensing because of their excellent optical properties, high biocompatibility, and low toxicity. Knowledge of their photoluminescence (PL) mechanisms, which have been widely studied, is of significance in guiding the synthesis and promoting applications of CDs with tunable PL emissions. However, the intrinsic mechanism of PL emission remains unclear, and a unified mechanism has not been found because of differences in particle structures. This review generalizes the categories of CDs, noting their structural diversity. Three types of PL mechanism pertaining to structural differences are outlined: internal factors dominated emission (including the conjugation effect, the surface state, and the synergistic effect), external factors dominated emission (including the molecular state and the environment effect), and crosslink-enhanced emission. Optical applications of CDs are also briefly mentioned. Finally, the prospects for research into PL mechanisms are discussed, noting the remaining challenges and directions for future work. © 2020 Science China Press
关键词	Carbon dots Crosslink-enhanced emission Molecular state Photoluminescence mechanisms Surface state
英文关键词	Biocompatibility; Carbon; Photoluminescence; Conjugation effects; Environment effects; Intrinsic mechanisms; Optical applications; Photoluminescence mechanism; Structural differences; Structural diversity; Synergistic effect; Optical properties
语种	英语
来源期刊	Science Bulletin
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/207341
作者单位	Green Catalysis Center, College of Chemistry, Zhengzhou University, Zhengzhou, 450001, China; State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, 130012, China; Henan Institute of Advanced Technology, Zhengzhou University, Zhengzhou, 450001, China; CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing, 100190, China
推荐引用方式 GB/T 7714	Ai L.,Yang Y.,Wang B.,et al. Insights into photoluminescence mechanisms of carbon dots: advances and perspectives[J],2021,66(8).
APA	Ai L..,Yang Y..,Wang B..,Chang J..,Tang Z..,...&Lu S..(2021).Insights into photoluminescence mechanisms of carbon dots: advances and perspectives.Science Bulletin,66(8).
MLA	Ai L.,et al."Insights into photoluminescence mechanisms of carbon dots: advances and perspectives".Science Bulletin 66.8(2021).