scholarly journals Plasmonic Photocatalysts Monitored by Tip-Enhanced Raman Spectroscopy

Catalysts ◽  
2019 ◽  
Vol 9 (2) ◽  
pp. 109 ◽  
Author(s):  
Jingang Wang ◽  
Xinxin Wang ◽  
Xijiao Mu
Keyword(s):  
Raman Spectroscopy ◽  
Malachite Green ◽  
Resonance Raman Spectroscopy ◽  
High Vacuum ◽  
Time Dependent ◽  
Hot Electrons ◽  
Dissociation Process ◽  
Green Is ◽  
General Chemical ◽  
Tip Enhanced Raman Spectroscopy

In this review, we first prove the resonance dissociation process by using time-dependent measurements of tip-enhanced resonance Raman spectroscopy (TERRS) under high vacuum conditions. Second, we show how to use thermal electrons to dissociate Malachite Green (MG) and the hot electrons in the nanogap of the high vacuum tip-enhanced Raman spectroscopy (TERS) device that are generated by plasma decay. Malachite Green is excited by resonance and adsorbed on the Ag and Au surfaces. Finally, we describe real-world and real-time observations of plasmon-induced general chemical reactions of individual molecules.

scholarly journals Short-Time Photodissociation Dynamics of 1-Chloro-2-Iodoethane From Resonance Raman Spectroscopy

1999 ◽  
Vol 19 (1-4) ◽  
pp. 71-74 ◽  
Author(s):  
Xuming Zheng ◽  
David Lee Phillips
Keyword(s):  
Raman Spectroscopy ◽  
Absorption Spectrum ◽  
Raman Spectra ◽  
Resonance Raman Spectroscopy ◽  
Resonance Raman ◽  
Time Dependent ◽  
Internal Excitation ◽  
Band Absorption ◽  
Resonance Raman Spectra ◽  
Short Time

We have obtained A-band absorption resonance Raman spectra of 1-chloro-2- iodoethane in cyclohexane solution. We have done preliminary time-dependent wavepacket calculations to simulate the resonance Raman intensities and absorption spectrum in order to learn more about the short-time photodissociation dynamics. We compare our preliminary results for 1-chloro-2-iodoethane with previous resonance Raman results for iodoethane and find that there appears to be more motion along non- C—I stretch modes for 1-chloro-2-iodoethane than for iodoethane. This is consistent with results of TOF photofragment spectroscopy experiments which indicate much more internal excitation of the photoproducts from 1-chloro-2-iodoethane photodissociation than the photoproducts from iodoethane photodissociation.

Advancing Single Molecule Tip-Enhanced Raman Spectroscopy under Ultra-High Vacuum

2010 ◽  
Author(s):  
Philip Schambach ◽  
Nicola R. Scott ◽  
Bruno Pettinger ◽  
P. M. Champion ◽  
L. D. Ziegler
Keyword(s):  
Raman Spectroscopy ◽  
Single Molecule ◽  
High Vacuum ◽  
Ultra High Vacuum ◽  
Tip Enhanced Raman Spectroscopy

Plasmonic Gradient Effects on High Vacuum Tip-Enhanced Raman Spectroscopy

2013 ◽  
Vol 2 (1) ◽  
pp. 74-80 ◽  
Author(s):  
Mengtao Sun ◽  
Zhenglong Zhang ◽  
Li Chen ◽  
Shaoxiang Sheng ◽  
Hongxing Xu
Keyword(s):  
Raman Spectroscopy ◽  
High Vacuum ◽  
Tip Enhanced Raman Spectroscopy ◽  
Gradient Effects

Plasmon-assisted chemical reactions revealed by high-vacuum tip-enhanced Raman spectroscopy

2014 ◽  
Author(s):  
Shuaicheng Lu ◽  
Shaoxiang Sheng ◽  
Zhenglong Zhang ◽  
Hongxing Xu ◽  
Hairong Zheng
Keyword(s):  
Raman Spectroscopy ◽  
Chemical Reactions ◽  
High Vacuum ◽  
Tip Enhanced Raman Spectroscopy
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