Distance dependence of surface-enhanced resonance raman enhancement in Langmuir-Blodgett dye multilayers

Journal Article · Thu Nov 06 00:00:00 EST 1986 · J. Phys. Chem.; (United States)

DOI:https://doi.org/10.1021/j100281a003· OSTI ID:7224375

Cotton, T M; Uphaus, R A; Moebius, D

Monolayers of a surface-active dye incorporated into inert matrix material were transferred onto structurally defined silver island films by the Langmuir-Blodgett technique. The dye-containing monolayers were spaced from the surface by accurately known increments by deposition of inert spacer monolayers. Surface-enhanced resonance Raman spectra were observed from dye molecules spaced as distant as six spacer increments (ca. 16 nm) from the silver surface. These results indicate an electromagnetic mechanism is operative in this system in contradiction to a chemical mechanism which would require direct contact between the Raman-active species and the metal surface.

• Research Organization: Univ. of Nebraska, Lincoln
• DOE Contract Number: FG02-84ER13261
• OSTI ID: 7224375
• Journal Information: J. Phys. Chem.; (United States), Vol. 90:23
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
CYANINE DYES
ADSORPTION
RAMAN SPECTROSCOPY
SILVER
SURFACE PROPERTIES
ELECTROMAGNETIC FIELDS
EXPERIMENTAL DATA
LAYERS
RAMAN EFFECT
THIN FILMS
DATA
DYES
ELEMENTS
FILMS
INFORMATION
LASER SPECTROSCOPY
METALS
NUMERICAL DATA
SORPTION
SPECTROSCOPY
TRANSITION ELEMENTS
400102* - Chemical & Spectral Procedures