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Cited by 664

The DOI matches its Crossref record; 20 of the 20 references it cites were found in a registry or an index.

Surface-Enhanced Raman Spectroscopy of Self-Assembled Monolayers: Sandwich Architecture and Nanoparticle Shape Dependence

Orendorff, Christopher J., Gole, Anand, Sau, Tapan K., Murphy, Catherine J.·2005·Analytical Chemistry
DOI 10.1021/ac048176x
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Abstract

Surface enhanced Raman scattering (SERS) spectra of 4-mercaptobenzoic acid (4-MBA) self-assembled monolayers (SAMs) on gold substrates is presented for SAMs onto which gold nanoparticles of various shapes have been electrostatically immobilized. SERS spectra of 4-MBA SAMs are enhanced in the presence of immobilized gold nanocrystals by a factor of 10(7)-10(9) relative to 4-MBA in solution. Large enhancement factors are a likely result of plasmon coupling between the nanoparticles (localized surface plasmon) and the smooth gold substrate (surface plasmon polariton), creating large localized electromagnetic fields at their interface, where 4-MBA molecules reside in this sandwich architecture. Moreover, enhancement factors depend on nanoparticle shape and vary by a factor of 10(2). This SERS geometry offers large surface enhancements for molecules adsorbed onto planar substrates and could be quite useful for determining chemical information for poor Raman scatterers from assays on 2-D substrates.

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Metadata

Authors
Orendorff, C. J., Gole, A., Sau, T. K., & Murphy, C. J.
Venue
Analytical Chemistry
Publisher
American Chemical Society (ACS)
Published
2005-04-09
Volume
77
Issue
10
Pages
3261-3266
ISSN
  • 0003-2700 (ISSN-L)
  • 1520-6882
DOI
10.1021/ac048176x
OpenAlex
W2073996759
Cited by
664
References
20
FWCI
17.99
Type
journal article
Language
en
Open access
closed

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