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	Revealing the molecular structure of single-molecule junctions in different conductance states by fishing-mode tip-enhanced Raman spectroscopy
	Liu, Zheng ; Ding, Song-Yuan ; Chen, Zhao-Bin ; Wang, Xiang ; Tian, Jing-Hua ; Anema, Jason R. ; Zhou, Xiao-Shun ; Wu, De-Yin ; Wu DY(吴德印) ; Mao, Bing-Wei ; Mao BW(毛秉伟) ; Xu, Xin ; Xu X(徐昕) ; Ren, Bin ; Ren B(任斌) ; Tian, Zhong-Qun ; Tian ZQ(田中群)
	2011-05-10
英文摘要	The conductance of single-molecule junctions may be governed by the structure of the molecule in the gap or by the way it bonds with the leads, and the information contained in a Raman spectrum is ideal for examining both. Here we demonstrate that molecule-to-surface bonding may be characterized during electron transport by 'fishing-mode' tip-enhanced Raman spectroscopy (FM-TERS). This technique allows mutually verifiable single-molecule conductance and Raman signals with single-molecule contributions to be acquired simultaneously at room temperature. Density functional theory calculations reveal that the most significant spectral change seen for a gold-4,4'-bipyridine-gold junction results from the deformation of the pyridine ring in contact with the drain electrode at high voltage, and these calculations suggest that a stronger bonding interaction between the molecule and the drain may account for the nonlinear dependence of conductance on bias voltage. FM-TERS will lead to a better understanding of electron-transport processes in molecular junctions.; National Natural Science Foundation of China[20825313, 20827003, 21021002, 21061120456]; MOST of China[2007CB935603, 2009CB930703]
语种	英语
出版者	NATURE PUBLISHING GROUP
内容类型	期刊论文
源URL	[http://dx.doi.org/doi:10.1038/ncomms1310]
专题	化学化工－已发表论文
推荐引用方式 GB/T 7714	Liu, Zheng,Ding, Song-Yuan,Chen, Zhao-Bin,et al. Revealing the molecular structure of single-molecule junctions in different conductance states by fishing-mode tip-enhanced Raman spectroscopy[J],2011.
APA	Liu, Zheng.,Ding, Song-Yuan.,Chen, Zhao-Bin.,Wang, Xiang.,Tian, Jing-Hua.,...&田中群.(2011).Revealing the molecular structure of single-molecule junctions in different conductance states by fishing-mode tip-enhanced Raman spectroscopy..
MLA	Liu, Zheng,et al."Revealing the molecular structure of single-molecule junctions in different conductance states by fishing-mode tip-enhanced Raman spectroscopy".(2011).

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