Published January 5, 1999
| public
Journal Article
Surface-Enhanced Raman Scattering (SERS) from Azobenzene Self-Assembled "Sandwiches"
Abstract
A silver island film was thermally deposited on the top of an azobenzene self-assembled monolayer on gold, yielding a SERS-active system possessing a "sandwiched" structure of Ag|R_1−Azo−R_2S−|Au. For the first time, the positions of the Azo groups were controlled by using azobenzenealkanethiols with different terminal groups (R_1) or interchain spacers (R_2), to clarify the relationship between the SERS effect and the structural nature of the system. As will be shown, increases in distances of Azo groups from the gold substrate and from the silver film both cause the enhancement factor to decay exponentially, indicating that the enhancement correlates to both the gold substrate underneath and the silver islands above.
Additional Information
© 1999 American Chemical Society. Received August 14, 1998. In Final Form: November 16, 1998. Financial supports from the State Committee of Science and Technology, the State Educational Committee, and the National Natural Science Foundation of China are gratefully acknowledged. H.Z.Y. would like to thank Drs. Chunnian Shi and J. Spencer Baskin for critically reviewing the manuscript and insightful suggestions when it was prepared at Caltech.Additional details
- Eprint ID
- 88035
- DOI
- 10.1021/la981032r
- Resolver ID
- CaltechAUTHORS:20180719-155541572
- State Committee of Science and Technology (China)
- State Educational Committee (China)
- National Natural Science Foundation of China
- Created
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2018-07-19Created from EPrint's datestamp field
- Updated
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2021-11-16Created from EPrint's last_modified field