Abstract
Fabricating well-defined and highly reproducible platforms for surface-enhanced Raman scattering (SERS) is very important in developing practical SERS sensors. We report a novel SERS platform composed of a single metallic nanowire (NW) on a metallic film. Optical excitation of this novel sandwich nanostructure provides a line of SERS hot spots (a SERS hot line) at the gap between the NW and the film. This single nanowire on a film (SNOF) architecture can be easily fabricated, and the position of hot spots can be conveniently located in situ by using an optical microscope during the SERS measurement. We show that high-quality SERS spectra from benzenethiol, brilliant cresyl blue, and single-stranded DNA can be obtained on a SNOF with reliable reproducibility, good time stability, and excellent sensitivity, and thus, SNOFs can potentially be employed as effective SERS sensors for label-free biomolecule detection. We also report detailed studies of polarization- and material-dependent SERS enhancement of the SNOF structure.
| Original language | English |
|---|---|
| Pages (from-to) | 758-762 |
| Number of pages | 5 |
| Journal | Journal of the American Chemical Society |
| Volume | 131 |
| Issue number | 2 |
| DOIs | |
| Publication status | Published - 2009 Jan 21 |
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ASJC Scopus subject areas
- Biochemistry
- Catalysis
- Colloid and Surface Chemistry
- Chemistry(all)
Cite this
Single nanowire on a film as an efficient SERS-active platform. / Yoon, Iisun; Kang, Taejoon; Choi, Wonjun; Kim, Jangbae; Yoo, Youngdong; Joo, Sang Woo; Park, Q Han; Ihee, Hyotcherl; Kim, Bongsoo.
In: Journal of the American Chemical Society, Vol. 131, No. 2, 21.01.2009, p. 758-762.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Single nanowire on a film as an efficient SERS-active platform
AU - Yoon, Iisun
AU - Kang, Taejoon
AU - Choi, Wonjun
AU - Kim, Jangbae
AU - Yoo, Youngdong
AU - Joo, Sang Woo
AU - Park, Q Han
AU - Ihee, Hyotcherl
AU - Kim, Bongsoo
PY - 2009/1/21
Y1 - 2009/1/21
N2 - Fabricating well-defined and highly reproducible platforms for surface-enhanced Raman scattering (SERS) is very important in developing practical SERS sensors. We report a novel SERS platform composed of a single metallic nanowire (NW) on a metallic film. Optical excitation of this novel sandwich nanostructure provides a line of SERS hot spots (a SERS hot line) at the gap between the NW and the film. This single nanowire on a film (SNOF) architecture can be easily fabricated, and the position of hot spots can be conveniently located in situ by using an optical microscope during the SERS measurement. We show that high-quality SERS spectra from benzenethiol, brilliant cresyl blue, and single-stranded DNA can be obtained on a SNOF with reliable reproducibility, good time stability, and excellent sensitivity, and thus, SNOFs can potentially be employed as effective SERS sensors for label-free biomolecule detection. We also report detailed studies of polarization- and material-dependent SERS enhancement of the SNOF structure.
AB - Fabricating well-defined and highly reproducible platforms for surface-enhanced Raman scattering (SERS) is very important in developing practical SERS sensors. We report a novel SERS platform composed of a single metallic nanowire (NW) on a metallic film. Optical excitation of this novel sandwich nanostructure provides a line of SERS hot spots (a SERS hot line) at the gap between the NW and the film. This single nanowire on a film (SNOF) architecture can be easily fabricated, and the position of hot spots can be conveniently located in situ by using an optical microscope during the SERS measurement. We show that high-quality SERS spectra from benzenethiol, brilliant cresyl blue, and single-stranded DNA can be obtained on a SNOF with reliable reproducibility, good time stability, and excellent sensitivity, and thus, SNOFs can potentially be employed as effective SERS sensors for label-free biomolecule detection. We also report detailed studies of polarization- and material-dependent SERS enhancement of the SNOF structure.
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UR - http://www.scopus.com/inward/citedby.url?scp=62849101807&partnerID=8YFLogxK
U2 - 10.1021/ja807455s
DO - 10.1021/ja807455s
M3 - Article
C2 - 19099471
AN - SCOPUS:62849101807
VL - 131
SP - 758
EP - 762
JO - Journal of the American Chemical Society
JF - Journal of the American Chemical Society
SN - 0002-7863
IS - 2
ER -