Vibrational modes of aminothiophenol: a TERS and DFT study

被引：24
|
作者：
Merlen, A. [1 ]
Chaigneau, M. [2 ]
Coussan, S. [3 ]
机构：
[1] IM2NP, UMR CNRS 7334, F-83957 La Garde, France
[2] Ecole Polytech, UMR CNRS 7647, LPICM, Palaiseau, France
[3] Aix Marseille Univ, Ctr St Jerome, CNRS, Lab Phys Interact Ion & Mol,UMR 7345, F-13397 Marseille 20, France
来源：
PHYSICAL CHEMISTRY CHEMICAL PHYSICS | 2015年 / 17卷 / 29期
关键词：
ENHANCED RAMAN-SCATTERING; CATALYTIC COUPLING REACTIONS; P-AMINOTHIOPHENOL; CHEMICAL-ANALYSIS; SURFACE; SILVER; AG; P; P'-DIMERCAPTOAZOBENZENE; TRANSFORMATION; SPECTROSCOPY;
D O I：
10.1039/c5cp01579k
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
We report Tip Enhanced Raman Spectroscopy (TERS) mapping and Density Functional (DFT) calculations of aminothiophenol (ATP) grafted on a gold surface. The TERS mapping has demonstrated Raman modes of (ATP) and its dimerised derivative Dimercaptoazobenzene (DMAB). This feature confirms that the plasmon activated chemical reaction of ATP has occurred during TERS measurements. In some specific part of the samples some unidentified Raman modes are observed. We suggest that they could come from intermediate species formed during the conversion of ATP into DMAB. These modes are compared with calculated Raman spectra of some possible intermediate species. These results confirm the high potentiality of TERS measurements for nanochemistry.
引用
收藏
页码：19134 / 19138
页数：5
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