Enhancement of resonance Raman scattering from crystal violet deposited on island silver films

Abstract

The observed thickness dependence and excitation profiles of the surface-enhanced resonance Raman scattering (SERRS) from crystal violet (CV) on silver films demonstrated the importance of surface roughness and chemical effects. Using different normalization schemes in studying the excitation profile of SERRS we were able to identify that there are three multiplicative contributions to the observed overall enhancement, viz. the electromagnetic effect, the molecular resonance effect and the charge-transfer effect originating from the strong electronic interactions between CV and the metal islands.

Hyper-Raman scattering enhanced by anisotropic dimer plasmons on artificial nanostructures

“…The observed Raman peaks are in good agreement with the calculated result; the 1617 cm −1 peak having A 1 symmetry was much more intense than the theoretically estimated intensity of the free molecule, indicating that crystal violet is attached flat on the silver surface ͑that is, C 3 axis is normal to the surface͒. 28 In the SERS spectra excited by the 395 nm pulses, on the other hand, the 8 mode with E symmetry was most intense as shown in Fig. 3͑b͒.…”

In situ Raman spectroscopy of surfaces modified by ion soft landing

“…The main bands at 1615 & 1584 cm À1 (out-ofphase stretch), 1372 cm À1 (phenyl C-N stretching and in-plane C-H bending), 1175 cm À1 (in-plane aromatic C-H bending), 911 cm À1 (ring breathing mode), 803 cm À1 (out-of-plane C-H bending), and 728 cm À1 (H 3 C-N-CH 3 symmetric stretch) were assigned in earlier SERS studies. [35][36][37] In situ SIMS analysis was performed on the same surface after Raman analysis (Fig. 2B).…”

ZnO/Ag heterogeneous structure nanoarrays: Photocatalytic synthesis and used as substrate for surface-enhanced Raman scattering detection

“…Several groups have reported the detailed SERS of CV which is a typical SERS active analyte [23][24][25]. The as-obtained ZnO/Ag SERS substrate was firstly used to detect CV to test its effect.…”