کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10564463 | 970757 | 2005 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Adsorption of 2,2â²-biquinoline and 8-hydroxyquinoline on gold and silver nanoparticle surfaces
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آنالیزی یا شیمی تجزیه
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چکیده انگلیسی
The adsorption behaviors of 2,2â²-biquinoline (BiQu) and 8-hydroxyquinoline (8HQu) on gold and silver nanoparticle surfaces have been investigated by means of surface-enhanced Raman scattering (SERS) with the detailed vibrational assignment. The aromatic ring of BiQu and 8HQu appeared to assume a perpendicular or a tilted structure with respect to the gold and silver surface from the presence of the ν(CH) band at 3050-3060 cmâ1. By determining the relative enhancement factor of each vibrational band, we attempted to explain the orientation and enhancement mechanism on Au and Ag surfaces in a more quantitative way. Raman analysis indicated that the SERS enhancement mechanism could be different for BiQu and 8HQu as indicated from a different UV-vis absorbance spectral change in aggregation of gold nanoparticles upon injection of the adsorbates.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Vibrational Spectroscopy - Volume 39, Issue 1, 15 September 2005, Pages 74-80
Journal: Vibrational Spectroscopy - Volume 39, Issue 1, 15 September 2005, Pages 74-80
نویسندگان
Sungil Kim, Sang-Woo Joo,