Excitation wavelength dependent fluorescence of graphene oxide controlled by strain

doi:10.1039/c6nr08286f

	Excitation wavelength dependent fluorescence of graphene oxide controlled by strain
	Cushing, Scott K.1,2; Ding, Weiqiang 3; Chen, Gang 4; Wang, Chao 5; Yang, Feng 3; Huang, Fuqiang 5; Wu, Nianqiang 1
刊名	Nanoscale
	2017
卷号	9 期号:6 页码:2240-2245
ISSN号	20403364
DOI	10.1039/c6nr08286f
英文摘要	Unlike conventional fluorophores, the fluorescence emission of graphene oxide (GO) sheets can shift hundreds of nanometers as the excitation wavelength increases. The excitation wavelength dependent fluorescence is referred to as a giant red-edge effect and originates in a local reorganization potential slowing down the solvation dynamics of the excited state to the same time scale as the fluorescence lifetime. The present work has discovered that out-of-plane strain in the graphene oxide sheet leads to the intra-layer interaction necessary to slow down the solvation time scale. The oxygen percentage, dopant percentage, disorder, and strain are correlated with the presence and extent of the red-edge effect in oxygen, boron, nitrogen, and fluorine doped graphene oxide. Of these commonly cited possibilities, only out-of-plane strain is directly correlated to the red-edge effect. Furthermore, it is shown that the extent of the red-edge effect, or how far the emission wavelength can shift with increasing excitation wavelength, can be tuned by the electronegativity of the dopant. The present work interprets why the giant red-edge effect is present in some GO sheets but not in other GO sheets. © The Royal Society of Chemistry.
内容类型	期刊论文
源URL	[http://ir.sic.ac.cn/handle/331005/25577]
专题	中国科学院上海硅酸盐研究所
作者单位	1.Department of Mechanical and Aerospace Engineering, West Virginia University, Morgantown; WV; 26506-6106, United States; 2.Department of Physics and Astronomy, West Virginia University, Morgantown; WV; 26506-6315, United States; 3.Department of Industrial and Management Systems Engineering, West Virginia University, Morgantown; WV; 26506-6070, United States; 4.Department of Physics and Astronomy, Ohio University, Athens; OH 45701, United States; 5.Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai; 200050, China
推荐引用方式 GB/T 7714	Cushing, Scott K.,Ding, Weiqiang,Chen, Gang,et al. Excitation wavelength dependent fluorescence of graphene oxide controlled by strain[J]. Nanoscale,2017,9(6):2240-2245.
APA	Cushing, Scott K..,Ding, Weiqiang.,Chen, Gang.,Wang, Chao.,Yang, Feng.,...&Wu, Nianqiang.(2017).Excitation wavelength dependent fluorescence of graphene oxide controlled by strain.Nanoscale,9(6),2240-2245.
MLA	Cushing, Scott K.,et al."Excitation wavelength dependent fluorescence of graphene oxide controlled by strain".Nanoscale 9.6(2017):2240-2245.