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Issue 10, 2013
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Electric field gradient quadrupole Raman modes observed in plasmon-driven catalytic reactions revealed by HV-TERS

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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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Publication details

The article was received on 26 Feb 2013, accepted on 20 Mar 2013 and first published on 25 Mar 2013


Article type: Communication
DOI: 10.1039/C3NR00966A
Citation: 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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