Surface-enhanced Raman scattering of dipolar molecules by the graphene Fermi surface modulation with different dipole moments

doi:10.1016/j.apsusc.2017.07.015

CORC > 青岛生物能源与过程研究所 > 中国科学院青岛生物能源与过程研究所 > 新型能源碳素材料团队

	Surface-enhanced Raman scattering of dipolar molecules by the graphene Fermi surface modulation with different dipole moments
	Zhang, Mingjia 1; Leng, Yandan 1,2; Huang, Jing 1; Yu, Jiaojiao 1,2; Lan, Zhenggang 1; Huang, Changshui 1
刊名	APPLIED SURFACE SCIENCE
	2017-12-15
卷号	425 页码:654-662
关键词	Surface-enhanced Raman Scattering Graphene Dipole Moment Chromophore Fermi Surface
DOI	10.1016/j.apsusc.2017.07.015
文献子类	Article
英文摘要	We report the modulation of Raman scattering spectrum of chromophore/graphene hybrids by tunning the molecular polarization with different terminal groups (methyl, methoxy, nitrile, and two nitros). Based on the density functional theory, the specific dipole moment values of the chromophore molecules are calculated. An obvious surface-enhanced Raman scattering (SERS) was observed and the scattering intensity of molecule increases with enlarged dipole moment. According to the analysis of G band Raman shifts of graphene, the enhancement of the Raman signal can be attributed to strong electronic coupling between graphene and chromophore, which is closely related with the modulation of graphene Fermi surface by changing the dipole moment of the molecule. Besides, the optimization of the ground state geometry and the binding energy of the hybrids were also calculated with the Density Functional Based Tight Bonding (DFTB) method, which confirms that the enhanced Raman scattering of molecules on graphene arises from the improved energy level matching between graphene Fermi surface and molecular band, further providing a new way to design novel SERS devices. (C) 2017 Elsevier B.V. All rights reserved.
WOS关键词	CARBON NANOTUBE ; SUBSTRATE ; HYBRIDS ; FIELD
WOS研究方向	Chemistry ; Materials Science ; Physics
语种	英语
WOS记录号	WOS:000410609400080
资助机构	"Hundred Talents Program" of the Chinese Academy of Sciences ; National Natural Science Foundation of China Youth Science Fund Project(21301184) ; Natural Science Foundation of Shandong Province (China)(JQ201504)
内容类型	期刊论文
源URL	[http://ir.qibebt.ac.cn/handle/337004/9581]
专题	青岛生物能源与过程研究所_新型能源碳素材料团队
作者单位	1.Chinese Acad Sci, Qingdao Inst Bioenergy & Bioproc Technol, Qingdao 266101, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Mingjia,Leng, Yandan,Huang, Jing,et al. Surface-enhanced Raman scattering of dipolar molecules by the graphene Fermi surface modulation with different dipole moments[J]. APPLIED SURFACE SCIENCE,2017,425:654-662.
APA	Zhang, Mingjia,Leng, Yandan,Huang, Jing,Yu, Jiaojiao,Lan, Zhenggang,&Huang, Changshui.(2017).Surface-enhanced Raman scattering of dipolar molecules by the graphene Fermi surface modulation with different dipole moments.APPLIED SURFACE SCIENCE,425,654-662.
MLA	Zhang, Mingjia,et al."Surface-enhanced Raman scattering of dipolar molecules by the graphene Fermi surface modulation with different dipole moments".APPLIED SURFACE SCIENCE 425(2017):654-662.