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Cited by 342

The DOI matches its Crossref record; 29 of the 29 references it cites were found in a registry or an index.

Charge Transfer Enhancement in the SERS of a Single Molecule

Park, Won-Hwa, Kim, Zee Hwan·2010·Nano Letters
DOI 10.1021/nl102026p
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Abstract

We measured the surface-enhanced Raman scattering (SERS) of individual gold nanoparticle-4-aminobenzenethiol (ABT)-gold film junctions to investigate the charge-transfer (CT) enhancement of the SERS signals. Despite the mild electromagnetic field enhancement (∼10(5)) and high surface density of the ABT-molecules (∼240 molecules/hotspot) at the junctions, we observed the clear spectral and temporal signatures of CT-enhanced single-molecule SERS (SM-SERS). The result reveals that only a small fraction of the molecules at the junction has a significant CT-enhancement of 10(1)∼10(3), whereas the rest of the molecules are nearly CT-inactive. Furthermore, the result also proves that overall (charge-transfer and electromagnetic) enhancement of 10(6)∼10(8) is sufficient to observe the SM-SERS of an electronically off-resonant molecule, which disproves the widespread belief that a minimum enhancement of ∼10(14) is required for SM-SERS.

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Metadata

Authors
Park, W.-H., & Kim, Z. H.
Venue
Nano Letters
Publisher
American Chemical Society (ACS)
Published
2010-09-21
Volume
10
Issue
10
Pages
4040-4048
ISSN
  • 1530-6984 (ISSN-L)
  • 1530-6992
DOI
10.1021/nl102026p
OpenAlex
W1998684669
Cited by
342
References
29
FWCI
11.95
Type
journal article
Language
en
Open access
closed

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