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Surface‐enhanced Raman spectra of the reduction product of 4‐cyanopyridine on copper colloids
Author(s) -
Coyle Candace M.,
Chumanov George,
Jagodzinski Paul W.
Publication year - 1998
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/(sici)1097-4555(199808)29:8<757::aid-jrs284>3.0.co;2-a
Subject(s) - copper , colloid , raman spectroscopy , gold colloid , chemistry , spectral line , transition metal , molecule , metal , surface enhanced raman spectroscopy , adsorption , inorganic chemistry , raman scattering , analytical chemistry (journal) , catalysis , materials science , colloidal gold , nanoparticle , organic chemistry , nanotechnology , optics , physics , astronomy
Surface‐enhanced Raman spectra of 4‐cyanopyridine in a copper colloid solution were collected and showed no signal due to the C≡:N stretching normal mode. [ 15 N]‐4‐Cyanopyridine was prepared and similar results were obtained. The spectra of these molecules on gold colloids contain a signal attributed to this mode. These data were interpreted as being due to a transition metal‐assisted reduction of the nitrile group with the product 4‐aminomethylpyridine being adsorbed on the copper surface. The surface‐enhanced Raman spectrum of 4‐aminomethylpyridine on a copper colloid is nearly identical with the spectrum collected for 4‐cyanopyridine with the copper colloid. © 1998 John Wiley & Sons Ltd.