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Surface-Enhanced Raman Scattering (SERS) from Azobenzene Self-Assembled “Sandwiches”

Yu, Hua-Zhong and Zhang, Jin and Zhang, Hao-Li and Liu, Zhong-Fan (1999) Surface-Enhanced Raman Scattering (SERS) from Azobenzene Self-Assembled “Sandwiches”. Langmuir, 15 (1). pp. 16-19. ISSN 0743-7463. https://resolver.caltech.edu/CaltechAUTHORS:20180719-155541572

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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.


Item Type:Article
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https://dx.doi.org/10.1021/la981032rDOIArticle
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.
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Funding AgencyGrant Number
State Committee of Science and Technology (China)UNSPECIFIED
State Educational Committee (China)UNSPECIFIED
National Natural Science Foundation of ChinaUNSPECIFIED
Issue or Number:1
Record Number:CaltechAUTHORS:20180719-155541572
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20180719-155541572
Official Citation:Surface-Enhanced Raman Scattering (SERS) from Azobenzene Self-Assembled “Sandwiches” Hua-Zhong Yu, Jin Zhang, Hao-Li Zhang, and Zhong-Fan Liu Langmuir 1999 15 (1), 16-19 DOI: 10.1021/la981032r
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:88035
Collection:CaltechAUTHORS
Deposited By: George Porter
Deposited On:19 Jul 2018 23:07
Last Modified:03 Oct 2019 20:02

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