Surface-enhanced Raman spectroscopy as a monitor of iron(III) protoporphyrin reduction at a silver electrode in aqueous and acetonitrile solutions: vibronic resonance enhancement amplified by surface enhancement

1985 ◽  
Vol 89 (5) ◽  
pp. 763-768 ◽  
Author(s):  
Luis A. Sanchez ◽  
Thomas G. Spiro
Keyword(s):  
Raman Spectroscopy ◽  
Surface Enhanced Raman Spectroscopy ◽  
Silver Electrode ◽  
Surface Enhancement ◽  
Resonance Enhancement ◽  
Surface Enhanced ◽  
Surface Enhanced Raman ◽  
Acetonitrile Solutions

Surface-Enhanced Raman Spectroscopy at a Silver Electrode as a Real-Time Detector in Flowing Streams

1992 ◽  
Vol 46 (1) ◽  
pp. 147-151 ◽  
Author(s):  
Neil J. Pothier ◽  
R. Ken Forcé
Keyword(s):  
Raman Spectroscopy ◽  
Real Time ◽  
Surface Enhanced Raman Spectroscopy ◽  
Silver Electrode ◽  
Raman Signal ◽  
Applied Potential ◽  
Charge Coupled Device ◽  
Surface Enhanced ◽  
Surface Enhanced Raman ◽  
Adsorption Desorption

An analytical application for Surface-Enhanced Raman Spectroscopy at a silver electrode is described. Real-time SER spectra of adenine and cytosine have been recorded in a 10-µL spectroelectrochemical flow cell under flowing conditions. Charge-coupled-device detection allowed high-quality spectra spanning a ∼1200 cm−1 region to be recorded with integration times of 4 seconds. A low-power He Ne laser was used as a source. SERS at the silver electrode offers rapid time response to adsorption/desorption by appropriate potential modulation. The technique is extremely reproducible and insensitive to temperature and flow rate. The effects of incident photon energy and applied potential on the intensity of the Raman signal are discussed.

scholarly journals A metal–dielectric–graphene sandwich for surface enhanced Raman spectroscopy

Nanoscale ◽  
2014 ◽  
Vol 6 (17) ◽  
pp. 9925-9929 ◽  
Author(s):  
Xuechao Yu ◽  
Jin Tao ◽  
Youde Shen ◽  
Guozhen Liang ◽  
Tao Liu ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
Fluorescence Quenching ◽  
Dielectric Layer ◽  
Surface Enhanced Raman Spectroscopy ◽  
Raman Intensity ◽  
Plasmonic Resonance ◽  
Resonance Enhancement ◽  
Surface Enhanced ◽  
Graphene Interface ◽  
Surface Enhanced Raman

The Raman intensity of Rhodamine B (RhB) is enhanced by inserting a thin high κ dielectric layer which reduces the surface plasmon damping at the gold–graphene interface. The results indicate that the Raman intensity increases sharply by plasmonic resonance enhancement while maintaining efficient fluorescence quenching with optimized dielectric layer thickness.

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