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Adsorption of phenylacetylene on gold nanoparticle surfaces investigated by surface‐enhanced Raman scattering
Author(s) -
Joo SangWoo,
Kim Kwan
Publication year - 2004
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.1183
Subject(s) - phenylacetylene , adsorption , raman scattering , raman spectroscopy , nanoparticle , colloidal gold , materials science , surface (topology) , nanotechnology , chemical engineering , chemistry , optics , physics , organic chemistry , geometry , mathematics , engineering , catalysis
The adsorption of phenylacetylene (PA) on gold nanoparticle surfaces was investigated by means of surface‐enhanced Raman scattering (SERS). The aggregation behaviors were examined by UV–visible absorption spectroscopy and transmission electron microscopy. The phenyl ring of PA appeared to assume a perpendicular orientation with respect to the gold surface from the presence of the ν(CH) band at ∼3060 cm −1 . Neither a substantial red shift nor a significant band broadening of the ring breathing modes implied that a direct ring π‐orbital interaction from the phenyl ring with gold substrates should be low. The SERS spectrum of PA on Au surfaces was analyzed by determining the relative enhancement factor of each vibrational band. The multiple peaks in the ν(CC) stretching region were found to vary in the presence of other ionic species. Copyright © 2004 John Wiley & Sons, Ltd.