Issue 10, 2013
From the journal:

Nanoscale

Electric field gradient quadrupole Raman modes observed in plasmon-driven catalytic reactions revealed by HV-TERS

Zhenglong Zhang,ab   Mengtao Sun,*a   Panpan Ruan,a   Hairong Zhengb  and  Hongxing Xuac  

* Corresponding authors

a Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, P. O. Box 603-146, Beijing, People's Republic of China
E-mail: mtsun@iphy.ac.cn

b College of Physics and Information Technology, Shaanxi Normal University, Xi'an, People's Republic of China

c School of Physics & Technology, Wuhan University, Wuhan, People's Republic of China

Abstract

Electric field gradient quadrupole Raman modes are observed in plasmon-driven chemical reactions investigated with high vacuum tip-enhanced Raman spectroscopy (HV-TERS). TER spectra reveal that 4-nitrobenzenethiol (4NBT) catalytically dimerizes to dimercaptoazobenzene (DMAB) under an HV-TERS setup. More importantly, we find that the electric field gradient leads to strong enhancement of the infrared (IR)-active modes of DMAB. The observation of both the Raman-active and IR-active modes of DMAB provides spectral evidence for ultrasensitive chemical analysis.

Graphical abstract: Electric field gradient quadrupole Raman modes observed in plasmon-driven catalytic reactions revealed by HV-TERS

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Article information

DOI
https://doi.org/10.1039/C3NR00966A
Article type
Communication
Submitted
26 Feb 2013
Accepted
20 Mar 2013
First published
25 Mar 2013

Nanoscale, 2013,5, 4151-4155

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Electric field gradient quadrupole Raman modes observed in plasmon-driven catalytic reactions revealed by HV-TERS

Z. Zhang, M. Sun, P. Ruan, H. Zheng and H. Xu, Nanoscale, 2013, 5, 4151 DOI: 10.1039/C3NR00966A

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