Common Origin of Green Luminescence in Carbon Nanodots and Graphene Quantum Dots

	Common Origin of Green Luminescence in Carbon Nanodots and Graphene Quantum Dots
	Wang L.; Zhu S. J.; Wang H. Y.; Qu S. N.; Zhang Y. L.; Zhang J. H.; Chen Q. D.; Xu H. L.; Han W.; Yang B.; Sun H. B.
	2014
发表期刊	Acs Nano
ISSN	ISBN/1936-0851
卷号	8 期号:3 页码:2541-2547
摘要	Carbon nanodots (C-dots) synthesized by electrochemical ablation and small molecule carbonization, as well as graphene quantum dots (GQDs) fabricated by solvothermally cutting graphene oxide, are three kinds of typical green fluorescence carbon nanomaterials. Insight into the photoluminescence origin in these fluorescent carbon nanomaterials is one of the important matters of current debates. Here, a common origin of green luminescence in these C-dots and GQDs is unraveled by ultrafast spectroscopy. According to the change of surface functional groups during surface chemical reduction experiments, which are also accompanied by obvious emission-type transform, these common green luminescence emission centers that emerge in these C-dots and GQDs synthesized by bottom-up and top-down methods are unambiguously assigned to special edge states consisting of several carbon atoms on the edge of carbon backbone and functional groups with C=O (carbonyl and carboxyl groups). Our findings further suggest that the competition among various emission centers (bright edge states) and traps dominates the optical properties of these fluorescent carbon nanomaterials.
收录类别	SCI ; EI
语种	英语
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/43796
专题	中科院长春光机所知识产出
推荐引用方式 GB/T 7714	Wang L.,Zhu S. J.,Wang H. Y.,et al. Common Origin of Green Luminescence in Carbon Nanodots and Graphene Quantum Dots[J]. Acs Nano,2014,8(3):2541-2547.
APA	Wang L..,Zhu S. J..,Wang H. Y..,Qu S. N..,Zhang Y. L..,...&Sun H. B..(2014).Common Origin of Green Luminescence in Carbon Nanodots and Graphene Quantum Dots.Acs Nano,8(3),2541-2547.
MLA	Wang L.,et al."Common Origin of Green Luminescence in Carbon Nanodots and Graphene Quantum Dots".Acs Nano 8.3(2014):2541-2547.

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