Why and how do the shapes of surface‐enhanced Raman scattering spectra change? Recent progress from mechanistic studies

Abstract

The present review is focused on understanding the enhancement mechanisms in surface‐enhanced Raman scattering (SERS) from the point of view of the various spectral changes, which have brought considerable confusion in this research field and have obstructed practical SERS applications. The electromagnetic mechanism provides us with the quantitative explanation of unexpected SERS spectral changes, such as larger Raman intensities for anti‐Stokes peaks than for Stokes peaks and overtone peak intensities comparable with fundamental ones. Other mechanisms classified as chemical effects, i.e. the resonance Raman and the charge transfer mechanisms, are also introduced to explain the spectral changes in SERS. These mechanisms may explain the emergence of non‐totally symmetric vibrational modes in SERS spectra, which is usually forbidden in Raman spectra. Copyright © 2016 John Wiley & Sons, Ltd.

The SERS effect in coordination chemistry

“…Yamamoto and Itoh [167] have considered a twofold relationship between the plasmon resonance spectra (a) and the SERS spectra (b), assuming that the total Once excited, the surface plasmons decay radiatively or nonradiatively. In the case of small nanoparticles, e.g., 20 nm, it has been shown [168] that the surface plasmon damping is mainly governed by energy dissipation via nonradiative processes, e. g. electron-electron, electron-phonon, electron-defect and electron-surface scattering [169].…”

Study on fabrication of molecular sensing system using higher‐order nanostructure for environmental analysis and food safety

“…To fulfill the above three requirements, we focused toward SERS (Surface Enhanced Raman Scattering) . With Raman scattering, molecules of an illuminated substance produce inelastic scattering so that scattered light has a wavelength (wave number) different from that of incident light.…”

Recent advances in linear and non‐linear Raman spectroscopy. Part XI

“…In this review, Yamamoto and Itoh focused on why and how the shapes of surface‐enhanced Raman scattering spectra change based on recent progress from mechanistic studies. Their consideration of the various well‐known SERS mechanisms may explain the emergence of non‐totally symmetric vibrational modes in SERS spectra that are usually forbidden in Raman spectra . Qiang Zhang and co‐workers have studied design consideration for SERS detection of colloidal solutions with the aim of reducing spectral intensity fluctuations.…”

“…For the International Year of Light issue, the following reviews were published: Bersani and Lottici on Raman spectroscopy of minerals and mineral pigments in archaeometry; Buzzini and Suzuki on Forensic applications of Raman spectroscopy; Centeno on Identification of artistic materials in paintings and drawings by Raman spectroscopy; Fisk and co‐workers on Achieving optimal SERS through enhanced experimental design; Doty and co‐workers on What can Raman spectroscopy do for criminalistics? ; Gares and co‐workers on Review of explosive detection methodologies and the emergence of standoff deep UV resonance Raman; Ji, Zhao, and Ozaki on Semiconductor materials in analytical applications of surface‐enhanced Raman scattering; Kano and co‐workers on Hyperspectral coherent Raman imaging—Principle, theory, instrumentation, and applications to life sciences; Penido and co‐workers on Raman spectroscopy in forensic analysis: Identification of cocaine and other illegal drugs of abuse; Pozzi and Leona on Surface‐enhanced Raman spectroscopy in art and archaeology; Stoeckel and co‐workers on The application of Raman spectroscopy for the detection and identification of microorganisms; Yamamoto and Itoh on Why and how do the shapes of surface‐enhanced Raman scattering spectra change? Other reviews that appeared during 2016 were Cui and co‐workers on Plasmon‐driven catalysis in aqueous solutions probed by SERS spectroscopy and Chen and co‐workers on Probing single molecules and molecular aggregates.…”