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- Title
Surface-enhanced Raman Scattering of 4-Aminobenzenethiol Sandwiched between Silver Nanoparticles and Gold Micro-Powders<sup>#</sup>.
- Authors
Choi, Jeong-Yong; Lee, Hyang Bong; Kim, Kwan; Shin, Kuan Soo
- Abstract
The surface-enhanced Raman scattering ( SERS) activity of micrometer-sized gold ( μAu) powders is far weaker than that of micrometer-sized silver ( μAg) powders. The Raman peaks of organics assembled on μAu powders can, however, be enhanced dramatically by depositing Ag nanoparticles thereon to form the so-called sandwich structures. This is demonstrated in this work by using 4-aminobenzenthiol (4- ABT) as the prototype organic. Besides, the b2-type bands of 4- ABT are found to be enhanced more than the a1-type band, and this is presumed to be a result of the favorable Ag-to-Au charge transfer configuration of the sandwich structure (Ag/4- ABT/ μAu), associated with the chemical enhancement mechanism in SERS.
- Subjects
SERS spectroscopy; SILVER nanoparticles; CHARGE transfer; GOLD nanoparticles; SANDWICH construction (Materials)
- Publication
Bulletin of the Korean Chemical Society, 2015, Vol 36, Issue 3, p862
- ISSN
0253-2964
- Publication type
Article
- DOI
10.1002/bkcs.10161