Abstract
Abstract: Nanoparticles with tunable localized surface plasmon resonance have been prepared by synthesis in helium nanodroplets. Subsequent surface deposition allows for the formation of substrates which can be employed for surface-enhanced Raman spectroscopy (SERS). The assembly of Ag@Au core@shell clusters of about 5 nm diameter in helium droplets with different Ag:Au ratio allows to tune the surface plasmon resonance between the plain Ag resonance at 447 nm and the Au resonance at 555 nm. For the fabricated substrates only a single plasmon resonance is observed in the UV/vis absorption spectra. The prepared nanostructures have been functionalized with 4-methylbenzenethiol (4-MBT) molecules and SERS spectra have been recorded. The results demonstrate the potential of the helium droplet synthesis approach, opening up a new route to the formation of tailored plasmonic nanoparticles and functional nanostructures. Graphical abstract: [Figure not available: see fulltext.].
| Original language | English |
|---|---|
| Article number | 104 |
| Journal | The European physical journal / D |
| Volume | 73 |
| Issue number | 5 |
| DOIs | |
| Publication status | Published - 21 May 2019 |
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Keywords
- Clusters and Nanostructures
ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics
Cite this
Helium nanodroplet assisted synthesis of bimetallic Ag@Au nanoparticles with tunable localized surface plasmon resonance. / Lackner, Florian; Schiffmann, Alexander; Lasserus, Maximilian Ingo; Messner, Roman; Schnedlitz, Martin; Fitzek, Harald Matthias; Pölt, Peter; Knez, Daniel; Kothleitner, Gerald; Ernst, Wolfgang E.
In: The European physical journal / D, Vol. 73, No. 5, 104, 21.05.2019.Research output: Contribution to journal › Article › Research › peer-review
}
TY - JOUR
T1 - Helium nanodroplet assisted synthesis of bimetallic Ag@Au nanoparticles with tunable localized surface plasmon resonance
AU - Lackner, Florian
AU - Schiffmann, Alexander
AU - Lasserus, Maximilian Ingo
AU - Messner, Roman
AU - Schnedlitz, Martin
AU - Fitzek, Harald Matthias
AU - Pölt, Peter
AU - Knez, Daniel
AU - Kothleitner, Gerald
AU - Ernst, Wolfgang E.
PY - 2019/5/21
Y1 - 2019/5/21
N2 - Abstract: Nanoparticles with tunable localized surface plasmon resonance have been prepared by synthesis in helium nanodroplets. Subsequent surface deposition allows for the formation of substrates which can be employed for surface-enhanced Raman spectroscopy (SERS). The assembly of Ag@Au core@shell clusters of about 5 nm diameter in helium droplets with different Ag:Au ratio allows to tune the surface plasmon resonance between the plain Ag resonance at 447 nm and the Au resonance at 555 nm. For the fabricated substrates only a single plasmon resonance is observed in the UV/vis absorption spectra. The prepared nanostructures have been functionalized with 4-methylbenzenethiol (4-MBT) molecules and SERS spectra have been recorded. The results demonstrate the potential of the helium droplet synthesis approach, opening up a new route to the formation of tailored plasmonic nanoparticles and functional nanostructures. Graphical abstract: [Figure not available: see fulltext.].
AB - Abstract: Nanoparticles with tunable localized surface plasmon resonance have been prepared by synthesis in helium nanodroplets. Subsequent surface deposition allows for the formation of substrates which can be employed for surface-enhanced Raman spectroscopy (SERS). The assembly of Ag@Au core@shell clusters of about 5 nm diameter in helium droplets with different Ag:Au ratio allows to tune the surface plasmon resonance between the plain Ag resonance at 447 nm and the Au resonance at 555 nm. For the fabricated substrates only a single plasmon resonance is observed in the UV/vis absorption spectra. The prepared nanostructures have been functionalized with 4-methylbenzenethiol (4-MBT) molecules and SERS spectra have been recorded. The results demonstrate the potential of the helium droplet synthesis approach, opening up a new route to the formation of tailored plasmonic nanoparticles and functional nanostructures. Graphical abstract: [Figure not available: see fulltext.].
KW - Clusters and Nanostructures
UR - http://dx.doi.org/10.1140/epjd/e2019-90696-8
U2 - 10.1140/epjd/e2019-90696-8
DO - 10.1140/epjd/e2019-90696-8
M3 - Article
VL - 73
JO - The European physical journal / D
JF - The European physical journal / D
SN - 1434-6060
IS - 5
M1 - 104
ER -