Abstract
Surface-enhanced Raman scattering (SERS) spectroscopy is an extremely sensitive analytical technique that is capable of identifying the vibration signatures of target molecules up to single-molecule sensitivity. In this work, the ultrahigh sensitivity of SERS has been achieved through the immobilization of sharp-edges specific nanoparticles-so-called gold multibranched NPs (AuMs) on the silver grating surface through the biphenyl dithiol. This approach allows combining the extremely high SERS enhancement factor (better than that in the case of AuMs immobilized on the flat Ag film) with perfect reproducibility of Raman signals. The grating was created on the polymer substrate using the excimer laser modification and further metal deposition and has an "active" area 5 × 10 mm2, enabling the macroscale SERS substrate preparation. The wet-chemistry synthesized AuMs were then immobilized on the grating surface and the produced structure allows SERS measurements with a portable Raman spectrophotometer. The prepared structures were checked using the AFM, UV-Vis, and Raman spectroscopy techniques.
| Original language | English |
|---|---|
| Pages (from-to) | 14761-14769 |
| Number of pages | 9 |
| Journal | Physical Chemistry Chemical Physics |
| Volume | 19 |
| Issue number | 22 |
| DOIs | |
| Publication status | Published - 1 Jan 2017 |
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ASJC Scopus subject areas
- Physics and Astronomy(all)
- Physical and Theoretical Chemistry
Cite this
Ultrasensitive and reproducible SERS platform of coupled Ag grating with multibranched Au nanoparticles. / Kalachyova, Yevgeniya; Mares, David; Jerabek, Vitezslav; Ulbrich, Pavel; Lapcak, Ladislav; Svorcik, Vaclav; Lyutakov, Oleksiy.
In: Physical Chemistry Chemical Physics, Vol. 19, No. 22, 01.01.2017, p. 14761-14769.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Ultrasensitive and reproducible SERS platform of coupled Ag grating with multibranched Au nanoparticles
AU - Kalachyova, Yevgeniya
AU - Mares, David
AU - Jerabek, Vitezslav
AU - Ulbrich, Pavel
AU - Lapcak, Ladislav
AU - Svorcik, Vaclav
AU - Lyutakov, Oleksiy
PY - 2017/1/1
Y1 - 2017/1/1
N2 - Surface-enhanced Raman scattering (SERS) spectroscopy is an extremely sensitive analytical technique that is capable of identifying the vibration signatures of target molecules up to single-molecule sensitivity. In this work, the ultrahigh sensitivity of SERS has been achieved through the immobilization of sharp-edges specific nanoparticles-so-called gold multibranched NPs (AuMs) on the silver grating surface through the biphenyl dithiol. This approach allows combining the extremely high SERS enhancement factor (better than that in the case of AuMs immobilized on the flat Ag film) with perfect reproducibility of Raman signals. The grating was created on the polymer substrate using the excimer laser modification and further metal deposition and has an "active" area 5 × 10 mm2, enabling the macroscale SERS substrate preparation. The wet-chemistry synthesized AuMs were then immobilized on the grating surface and the produced structure allows SERS measurements with a portable Raman spectrophotometer. The prepared structures were checked using the AFM, UV-Vis, and Raman spectroscopy techniques.
AB - Surface-enhanced Raman scattering (SERS) spectroscopy is an extremely sensitive analytical technique that is capable of identifying the vibration signatures of target molecules up to single-molecule sensitivity. In this work, the ultrahigh sensitivity of SERS has been achieved through the immobilization of sharp-edges specific nanoparticles-so-called gold multibranched NPs (AuMs) on the silver grating surface through the biphenyl dithiol. This approach allows combining the extremely high SERS enhancement factor (better than that in the case of AuMs immobilized on the flat Ag film) with perfect reproducibility of Raman signals. The grating was created on the polymer substrate using the excimer laser modification and further metal deposition and has an "active" area 5 × 10 mm2, enabling the macroscale SERS substrate preparation. The wet-chemistry synthesized AuMs were then immobilized on the grating surface and the produced structure allows SERS measurements with a portable Raman spectrophotometer. The prepared structures were checked using the AFM, UV-Vis, and Raman spectroscopy techniques.
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U2 - 10.1039/c7cp01828b
DO - 10.1039/c7cp01828b
M3 - Article
VL - 19
SP - 14761
EP - 14769
JO - Physical Chemistry Chemical Physics
JF - Physical Chemistry Chemical Physics
SN - 1463-9076
IS - 22
ER -