Plasmon-driven dimerization via S-S chemical bond in an aqueous environment

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	Plasmon-driven dimerization via S-S chemical bond in an aqueous environment
	Cui, L ; Wang, PJ ; Chen, XW ; Fang, YR ; Zhang, ZL ; Sun, MT
刊名	SCIENTIFIC REPORTS
	2014
卷号	4
ISSN号	2045-2322
通讯作者	Sun, MT (reprint author), Chinese Acad Sci, Inst Phys, Beijing Natl Lab Condensed Matter Phys, POB 603-146, Beijing 100190, Peoples R China.
中文摘要	The surface-enhanced Raman scattering (SERS) spectra of thioanisole are experimentally investigated in an electrochemical environment in this study. Two Raman peaks, which depend strongly not only on electric potential but also on the local surface plasmon resonances (LSPR), have been observed. Theoretical calculations reveal that thioanisole is first dissociated from thiophenol via the S-CH3 bond; plasmons then drive the dimerisation of thiophenol via the S-S bond, which is strongly potential dependent. One Raman peak corresponds to the S-S vibrational mode of the thiophenol dimer, and the other corresponds to the asymmetric C-C stretching modes of the benzenyl of the thiophenol dimer. The potential-dependent two Raman modes is the potential-dependent dimerisation dynamics of thiophenol via the S-S bond. Our experimental findings provide insight into the structural elucidation of adsorbed molecules and molecular surface reaction dynamics.
资助信息	National Natural Science Foundation of China [91436102, 11374353, 21473115, 11474141, 11304135, 11404055]; National Key Basic Research Program of China [2014CB921001]; Program of Liaoning Key Laboratory of Semiconductor Light Emitting and Photocatalytic Materials; Program of Shenyang Key Laboratory of Optoelectronic Materials and Technology [F12-254-1-00]; Scientific Research Base Development Program of the Beijing Municipal Commission of Education; Chinese Academy of Sciences [XDB07030200]
语种	英语
公开日期	2015-04-14
内容类型	期刊论文
源URL	[http://ir.iphy.ac.cn/handle/311004/59679]
专题	物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文
推荐引用方式 GB/T 7714	Cui, L,Wang, PJ,Chen, XW,et al. Plasmon-driven dimerization via S-S chemical bond in an aqueous environment[J]. SCIENTIFIC REPORTS,2014,4.
APA	Cui, L,Wang, PJ,Chen, XW,Fang, YR,Zhang, ZL,&Sun, MT.(2014).Plasmon-driven dimerization via S-S chemical bond in an aqueous environment.SCIENTIFIC REPORTS,4.
MLA	Cui, L,et al."Plasmon-driven dimerization via S-S chemical bond in an aqueous environment".SCIENTIFIC REPORTS 4(2014).