Effects of electrolytes used in roughening gold substrates by oxidation–reduction cycles on surface-enhanced Raman scattering

2005 ◽  
Vol 7 (12) ◽  
pp. 1345-1350 ◽  
Author(s):  
Yu-Chuan Liu ◽  
Chee-Chan Wang ◽  
Chun-En Tsai
Keyword(s):  
Raman Scattering ◽  
Surface Enhanced Raman Scattering ◽  
Oxidation Reduction ◽  
Gold Substrates ◽  
Surface Enhanced ◽  
Surface Enhanced Raman ◽  
Enhanced Raman Scattering

scholarly journals Surface enhanced raman scattering of aromatic thiols adsorbed on nanostructured gold surfaces

2009 ◽  
Vol 7 (3) ◽  
pp. 446-453 ◽  
Author(s):  
Mamdouh Abdelsalam
Keyword(s):  
Raman Scattering ◽  
Electrochemical Deposition ◽  
Self Assembly ◽  
Surface Enhanced Raman Scattering ◽  
Nanostructured Films ◽  
Gold Substrates ◽  
Surface Enhanced ◽  
Surface Enhanced Raman ◽  
Nanostructured Gold ◽  
Enhanced Raman Scattering

AbstractIn this paper we describe the use of a simple and versatile technique of templated electrodeposition through polystyrene sphere templates to produce nanostructured films of gold with regular submicron spherical holes arranged in a hexagonal close-packed structure. The templates were produced by self assembly of a monodispersed suspension of polystyrene spheres on gold substrates using capillary forces. The self assembly process was modified through the chemical modification of the gold substrate with cysteamine thiol. Films of gold were prepared by electrochemical deposition through the template. The electrochemical deposition charge and the current time curve were used to control the film height with a precision of approximately 10 nm. The colour of the nanostructured films changed as the film thickness was changed. Surface enhanced Raman Scattering spectra were recorded and used to identify very low concentrations of aromatic thiol molecules, 4-Nitrobenzenethiol (4-NBT) and 4-Aminobenzenethiol (4-ABT), adsorbed on the surface of the nanostructured gold substrates.

scholarly journals Influence of Surface Roughness Variation on the Surface-Enhanced Raman Scattering (SERS) Signal

1994 ◽  
Vol 11 (4) ◽  
pp. 217-223 ◽  
Author(s):  
S. Kruszewski
Keyword(s):  
Raman Scattering ◽  
Surface Enhanced Raman Scattering ◽  
Reduction Procedure ◽  
Sers Signal ◽  
Oxidation Reduction ◽  
Reduction Cycle ◽  
Surface Enhanced ◽  
Surface Enhanced Raman ◽  
Enhanced Raman Scattering ◽  
Sers Intensity

The roughness of a silver electrode was changed by varying the parameters employed in the oxidation–reduction procedure. Investigations of the surface-enhanced Raman scattering (SERS) intensity as a function of parameters of the oxidation–reduction cycle (ORC) procedure and the extent of roughness have been performed. On the basis of these investigations, it is possible to conclude that deep pores on the surface have a greater influence on the SERS signal than the grain size.

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