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Comparison of Surface‐Enhanced Raman and Hyper‐Raman Spectra of the Triphenylmethane Dyes Crystal Violet and Malachite Green
Author(s) -
Schneider S.,
Brehm G.,
Freunscht P.
Publication year - 1995
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.2221890104
Subject(s) - raman spectroscopy , crystal violet , triphenylmethane , malachite green , raman scattering , crystal (programming language) , chemistry , spectral line , molecule , analytical chemistry (journal) , molecular vibration , materials science , optics , adsorption , organic chemistry , physics , computer science , programming language , medicine , pathology , astronomy
Vibrational spectra of two dyes, malachite green and crystal violet are presented. Raman and hyper‐Raman spectra are recorded as surface‐enhanced (hyper‐) Raman spectra on silver colloids. These data are compared to the respective IR spectra with respect to the point group of the molecules (C 2 and C 3 ). Theoretical calculations (PM3 semiempirical) and polarized Raman spectra are used to give an assignment of some vibrational bands. The advantage of SERS (surface‐enhanced Raman scattering) and SEHRS (surface‐enhanced hyper‐Raman scattering) is discussed for the analysis of vibrational spectra.