Premium
Fourier transform Raman and surface‐enhanced Raman spectroscopy of some quinoline derivatives
Author(s) -
Bolboaca M.,
Kiefer W.,
Popp J.
Publication year - 2002
Publication title -
journal of raman spectroscopy
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.748
H-Index - 110
eISSN - 1097-4555
pISSN - 0377-0486
DOI - 10.1002/jrs.816
Subject(s) - isoquinoline , raman spectroscopy , molecule , chemistry , quinoline , analytical chemistry (journal) , density functional theory , fourier transform infrared spectroscopy , surface enhanced raman spectroscopy , raman scattering , computational chemistry , stereochemistry , organic chemistry , chemical engineering , optics , physics , engineering
Fourier transform (FT) Raman and surface‐enhanced Raman spectroscopy (SERS) were applied to the vibrational characterization of isoquinoline and 4‐methylquinoline. The assignment of the vibrational modes was carried out on the basis of results obtained from density functional theory calculations. The comparison of SER spectra with the FT‐Raman spectra reveals remarkable changes attributed to the chemical interaction between the molecules and the silver substrate. The SER spectra of the adsorbed molecules depend strongly on the pH conditions. Variation in SER spectra with change of pH is attributed to a change in orientation of the absorbed isoquinoline molecules with respect to the silver surface and to a change in the chemical nature of the 4‐methylquinoline molecules. Copyright © 2002 John Wiley & Sons, Ltd.