DOI: 10.1016/j.scib.2020.12.015
论文题名: Insights into photoluminescence mechanisms of carbon dots: advances and perspectives
作者: Ai L. ; Yang Y. ; Wang B. ; Chang J. ; Tang Z. ; Yang B. ; Lu S.
刊名: Science Bulletin
ISSN: 20959273
出版年: 2021
卷: 66, 期: 8 起始页码: 839
结束页码: 856
语种: 英语
中文关键词: 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
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 Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/170189
Appears in Collections: 气候变化与战略
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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
Recommended Citation:
Ai L.,Yang Y.,Wang B.,et al. Insights into photoluminescence mechanisms of carbon dots: advances and perspectives[J]. Science Bulletin,2021-01-01,66(8)