Surface enhanced Raman scattering spectra,

S. Lefrant, I. Baltog, M. Baibarac, J. Schreiber, and O. Chauver, Modification of surface-enhanced Raman scattering spectra of single-walled carbon nanotubes as a function of nanotube film thickness. Phys. Rev. B 65, 235401.1- 235401.9 (2002). 

Aramaki, K. and Uehara, J. (1990) The surface-enhanced Raman scattering spectra of pyridine adsorbed on an iron surface. Journal of The Electrochemical Society, 137,185-187. 

Metal-based nanoparticles decorated with calix[4]arene receptors to sense polycyclic aromatic hydrocarbons (PAHs) have been developed by Sanchez-Cortes [ 145]. Each combination of host and PAH (pyrene, triphenylene, benzo[c] phenanthrene, coronene) gave a different signature in their surface-enhanced Raman scattering spectra, thus offering valuable information on the interaction between the calix[4]arene receptors and the PAH molecules. 

Matejka, P., Stavek, J., Volka, K., and Schrader, B. (1996). Near-infrared surface-enhanced Raman scattering spectra of heterocyclic and aromatic species adsorbed on TLC plates activated with silver. Appl. Spectrosc. 50 409-414. 

Kahraman, M., Yazici, M.M., Sahin, F., Bayrak, O.F. and Culha, M. (2007) Reproducible surface-enhanced Raman scattering spectra of bacteria on aggregated silver nanoparticles. Applied Spectroscopy, 61,479-85. 

Surface-enhanced Raman scattering using a silver-coated alumina support selectively enhanced the spectrum of p-aminobenzoic acid. This allowed the determination of this compound at low ppm levels in vitamin B complex354,355. 

As for Raman spectroscopy one may expect resonance Raman effect and/or surface-enhanced Raman scattering (SERS). By using these effects, the Raman spectrum of a monolayer film may be enhanced by 103-106. Resonance Raman spectroscopy is useful for exploring the electronic structure of monolayers with a chromophore and SERS technique is applied to study structure, orientation, and interactions of monolayers on a silver or gold surface. 

In the experiments presented here, the fluorophores are adsorbed directly onto the metallic (gold) NP surface. The fluorescence enhancement (if any) is therefore small and the MEF signal may accordingly be weak, especially for weak fluorophores like Rh6G at 633 nm. In fact, the MEF spectrum is accompanied by Raman peaks of comparable intensity (themselves enhanced through Surface Enhanced Raman Scattering, SERS). 

Laser Raman Microprobe This allows information to be collected from small samples via the use of a VLM, which allows the region to be selected from which the Raman spectrum will be obtained. Surface-Enhanced Raman Scattering (SERS) This is used to examine surfaces, oxidation, catalysis, and thin films. 

The solvent-induced stereochemical behaviour of a bile acid-based biphenyl phosphite has been studied experimentally using circular dichroism (CD) spectroscopy, and theoretically using DFT quantum mechanical methods. " The FTIR, Raman and surface-enhanced Raman scattering (SERS) spectra of phenyl phosphate disodium salt have been recorded and its vibrational wavenumbers, calculated using the Hartree-Fock/6-31G basis set, compared with experimental values. From SERS spectra study, the molecule is adsorbed on the silver surface with the benzene ring in a tilted orientation. The presence of the phenyl ring and the phosphate group vibrations in the SERS spectrum reveal the interactions between the phenyl... 

Figure 14 Improvement in the Raman spectrum of peat humic acid in neutralized form by use of near-infrared excitation. The top spectrum was obtained with 514.5-nm excitation, which results in a large fluorescence background that obscures the signal. However, as shown in the bottom spectrum, with 1064-nm excitation, and after subtraction of thermal emission background, spectral features of peat humic are clearly discernible. (Reprinted with permission from YH Yang, HA Chase. Applications of Raman and surface enhanced Raman scattering techniques to humic substances. Spectr Lett 31 821-848, 1998. Copyright 1998 Marcel Dekker, Inc.)...

Surface-enhanced Raman scattering is a surface phenomenon and only molecules close to the substrate surface show enhanced Raman spectra. In a mixture there will be competition for surface sites. If one species is more highly attracted to the surface than another the latter will not show a SERS spectrum. For this reason, we can use SERS spectroscopy for identifying and quantifying the individual adsorb compound in the first monolayer of mixtures of CPC and PNP. The ex situ surface roughening procedure is carried out in a 0.1 M KCl electrolyte solution in the absence of other molecules and the binary mixture of CPC/PNP is then added to the op-toelectrochemical cell. The detailed analysis of the system containing mixtures of CPC and PNP can be summarized as follow ... 

In 1974 news came that the Raman spectrum of pyridine was considerably enhanced when absorbed on a roughened silver substrate. This effect was named SERS (surface enhanced Raman scattering) and has since been observed from many other compounds and other metals. Electrochemistry was an early application. Inevitably, experimenters were to combine the effect with RRS to create SERRS, which... 

Another important issue in the present study concerns the catalytic activity of adsorbed GO. SERRS has been employed in several flavoprotein studies Most striking in these studies was the observation of significant differences between the SERRS spectra at the electrode and the RR spectra of the flavoproteins in solution s . Such differences often characterize surface enhanced Raman scattering phenomena, but their significance has not yet been established. In the case of GO, one explanation is that the observed SERRS spectrum arises from free flavin produced... 

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