SERRS of Langmuir-Blodgett monolayers: Spatial spectroscopic tuning
- Univ. of Windsor (Canada)
Surface-enhanced resonance Raman scattering (SERRS) is shown to be a unique tool to perform selective analytical spectroscopy of a specific layer in a bilayer sample without apparent interference from adjacent material. The spatial spectroscopic tuning was achieved on Langmuir-Blodgett monolayers of two different molecules with electronic absorption in the visible. Since the surface Raman electromagnetic enhancement extends well beyond the first adsorbed monolayer, it is possible for the SERRS of upper layers to be much stronger than the surface-enhanced Raman scattering (SERS) signal from the first monolayer deposited onto a Ag surface. The SERS active surface was of Ag-coated Sn spheres that have been shown to be good enhancing surfaces in a wide spectral region encompassing that of the Ag and Au island films.
- OSTI ID:
- 6718329
- Journal Information:
- Journal of the American Chemical Society; (USA), Journal Name: Journal of the American Chemical Society; (USA) Vol. 111:20; ISSN 0002-7863; ISSN JACSA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
360602 -- Other Materials-- Structure & Phase Studies
360603* -- Materials-- Properties
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400200 -- Inorganic
Organic
& Physical Chemistry
CALCULATION METHODS
DATA
DATA ANALYSIS
ELEMENTS
EXPERIMENTAL DATA
FILMS
INFORMATION
LASER SPECTROSCOPY
MEASURING INSTRUMENTS
MEASURING METHODS
METALS
NUMERICAL DATA
RAMAN SPECTROSCOPY
SILVER
SPECTROSCOPY
SURFACE PROPERTIES
THIN FILMS
TRANSITION ELEMENTS