Plasmon-Driven Selective Reductions Revealed by Tip-Enhanced Raman Spectroscopy

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	Plasmon-Driven Selective Reductions Revealed by Tip-Enhanced Raman Spectroscopy
	Sun, MT ; Zhang, ZL ; Chen, L ; Li, Q ; Sheng, SX ; Xu, HX ; Song, P
刊名	ADVANCED MATERIALS INTERFACES
	2014
卷号	1 期号:5
ISSN号	2196-7350
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	We successfully realized in-situ monitoring plasmon-driven selective reduction of 2,4-dinitrobenzenethiol to 2,2'-diamino-dimercaptoazobenzene, revealed by high vacuum tip-enhanced Raman spectroscopy (HV-TERS). The HV-TER spectra revealed that the 2-nitro and the 4-nitro of 2,4-DNBT were selectively reduced to the 2-amine and the -N = N-bond of 2,2'-diamino-dimercaptoazobenzene (2,2'DA-DMAB). Raman-active and IR-active modes as well as Fermi resonance were simultaneously observed in HV-TERS, which demonstrated the advantages of HV-TERS over SERS, since only Raman-active modes were observed in SERS. The intensities of molecular IR-active modes can be manipulated by the distance between tip and substrate in the near field, due to different dependences of the plasmon gradient and plasmon intensity over the distance of nano gap. Our results in HV-TERS are in-situ "complete-vibration modes" spectral analysis, which significantly extend the application of HV-TERS in the field of ultrasensitive spectral analysis on the nano scale.
资助信息	National Natural Science Foundation of China [11374353, 11304135, 11274149]; Program of Shenyang Key Laboratory of Optoelectronic materials and technology [F12-254-1-00]
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/311004/58842]
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	Sun, MT,Zhang, ZL,Chen, L,et al. Plasmon-Driven Selective Reductions Revealed by Tip-Enhanced Raman Spectroscopy[J]. ADVANCED MATERIALS INTERFACES,2014,1(5).
APA	Sun, MT.,Zhang, ZL.,Chen, L.,Li, Q.,Sheng, SX.,...&Song, P.(2014).Plasmon-Driven Selective Reductions Revealed by Tip-Enhanced Raman Spectroscopy.ADVANCED MATERIALS INTERFACES,1(5).
MLA	Sun, MT,et al."Plasmon-Driven Selective Reductions Revealed by Tip-Enhanced Raman Spectroscopy".ADVANCED MATERIALS INTERFACES 1.5(2014).