Tunable laser excitation profile of surface enhanced raman scattering from pyridine adsorbed on a copper electrode surface

Allen, Colin; Schatz, George C.; Duyne, Richard P. Van

doi:10.1016/0009-2614(80)80496-9

Cited by 62 publications

(13 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…SERS from Copper/Aluminum Foil. SER spectra of pyridine have been reported for different forms of copper metal surfaces, such as copper electrodes, copper films in UHV, and aqueous copper colloids . All reports showed similar spectra with laser excitation at 514.5 and 647.1 nm.…”

Section: Resultsmentioning

confidence: 91%

“…Various SERS-active experimental systems have been developed to optimize enhancement for applications or to validate specific theoretical models. Electrochemically roughened electrodes, − metal colloids produced via chemical reduction, − and vapor-deposited metal island films − are the most common surfaces that have been utilized in SERS studies. Other preparation methods include ion bombardment, mechanical polishing, and acid etching .…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Surface-Enhanced Raman Scattering of Pyridine Using Different Metals: Differences and Explanation Based on the Selective Formation of α-Pyridyl on Metal Surfaces

Zuo

Jagodzinski

2005

J. Phys. Chem. B

View full text Add to dashboard Cite

A simple method has been developed to produce SERS-active metal surfaces. Six metal surfaces (cadmium, nickel, gold, iron, copper, and silver) have been prepared on an aluminum foil underlayment by chemical reduction and strong surface-enhanced Raman signals have been observed for pyridine species on these surfaces. This permits the direct comparison of pyridine spectra on different metal surfaces prepared by the same chemically clean method. The differences among the SER spectra of the aqueous pyridine species using different metals generally follow the trend of silver, cadmium, nickel, iron, gold, and copper, which can be explained by the selective formation of alpha-pyridyl species and the equilibria between end-on adsorbed pyridines and edge-on adsorbed alpha-pyridyl species on the different metal surfaces.

show abstract

Section: Resultsmentioning

confidence: 91%

Section: Introductionmentioning

confidence: 99%

Surface-Enhanced Raman Scattering of Pyridine Using Different Metals: Differences and Explanation Based on the Selective Formation of α-Pyridyl on Metal Surfaces

Zuo

Jagodzinski

2005

J. Phys. Chem. B

View full text Add to dashboard Cite

show abstract

“…It is well-known that electromagnetic enhancements for gold are large below ca. 2 eV (620 nm) but are diminished above this energy. − In the case of our template-synthesized Au particles, surface electromagnetic enhancements would be strongest for θ = 0° polarization where the plasmon resonance maximum occurs at longer wavelengths. Considering only the polarization of the gold particle (as we did in all of the simulated spectra discussed above), we would always expect the θ = 0° dipole resonance to show a higher extinction than the θ = 90° case.…”

Section: Discussionmentioning

confidence: 92%

Visible Region Polarization Spectroscopic Studies of Template-Synthesized Gold Nanoparticles Oriented in Polyethylene

et al. 1998

View full text Add to dashboard Cite

We have obtained visible range polarization spectra of template-synthesized gold nanoparticles oriented in polyethylene (PE). The plasmon resonance extinction bands observed with the incident electric field polarized parallel, perpendicular, and at intermediate angles to the direction of friction orientation are consistent with the long axis of the particles being aligned with the gross orientation axis. For all particle sizes considered (radii 16, 38, and 60 nm) the degree of linear dichroism increases with the amount of gold deposited in the template synthesis step prior to extraction and orientation. The experimental spectra agree with the predictions of the Rayleigh, Maxwell−Garnett, and dynamical Maxwell−Garnett theories only qualitatively. All of these treatments fail to predict the dependence of the spectral extinction intensities on the polarization angle θ. T-matrix scattering calculations suggest that the contribution from electric quadrupole modes cannot be ignored in the 38 and 60 nm radius particles. The calculated θ-dependence of the extinction intensity does not resemble experiment for 16 nm radius particles, but the theory−experiment comparison is more favorable for the larger radius systems. Some possible models for these observations are discussed.

show abstract

“…For Cu and Au there is a similar gap between theory and experiment, although the drop in intensity at 600 nm in Figure 4 matches observations accurately. 74 Experimental information concerning the magnitudes and frequency dependence of the enhancements for the alkalis Al and In is not extensive. Although the available results are roughly consistent with Figure 4, a chemical enhancement factor may also be present.…”

Section: Current Status Of Theory/experiments Comparisonsmentioning

confidence: 99%

Electromagnetic Mechanism of Surface‐Enhanced Spectroscopy

Schatz

Duyne

2001

Handbook of Vibrational Spectroscopy

Self Cite

270

347

View full text Add to dashboard Cite

The sections in this article are Introduction Electromagnetic Mechanism of Surface‐Enhanced R aman Spectroscopy for Isolated Metal Particles A simple Model: Quasistatic Treatment of an Isolated Sphere Electrostatics of Isolated Spheroids Improvements to the Spheroid Model Electrodynamic Corrections Size‐Dependent Dielectric Constants Current Status of Theory/Experiment Comparisons Extensions of the Electromagnetic Model Effect of Adsorbed Layers on Intensities Nonlinear Surface Optical Processes Electromagnetic Mechanism for Many Coupled Particles and for Gratings Conclusions and Further Work Acknowledgments

show abstract

Tunable laser excitation profile of surface enhanced raman scattering from pyridine adsorbed on a copper electrode surface

Cited by 62 publications

References 14 publications

Surface-Enhanced Raman Scattering of Pyridine Using Different Metals: Differences and Explanation Based on the Selective Formation of α-Pyridyl on Metal Surfaces

Surface-Enhanced Raman Scattering of Pyridine Using Different Metals: Differences and Explanation Based on the Selective Formation of α-Pyridyl on Metal Surfaces

Visible Region Polarization Spectroscopic Studies of Template-Synthesized Gold Nanoparticles Oriented in Polyethylene

Electromagnetic Mechanism of Surface‐Enhanced Spectroscopy

Contact Info

Product

Resources

About