Helium nanodroplet assisted synthesis of bimetallic Ag@Au nanoparticles with tunable localized surface plasmon resonance

Research output: Contribution to journalArticleResearchpeer-review

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.].

LanguageEnglish
Article number104
JournalThe European physical journal / D
Volume73
Issue number5
DOIs
StatusPublished - 21 May 2019

Fingerprint

surface plasmon resonance
helium
nanoparticles
synthesis
Raman spectroscopy
plains
assembly
routes
absorption spectra
molecules

Keywords

  • Clusters and Nanostructures

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

Cite this

@article{1f18347e662e44cfb290de0ca6a41430,
title = "Helium nanodroplet assisted synthesis of bimetallic Ag@Au nanoparticles with tunable localized surface plasmon resonance",
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.].",
keywords = "Clusters and Nanostructures",
author = "Florian Lackner and Alexander Schiffmann and Lasserus, {Maximilian Ingo} and Roman Messner and Martin Schnedlitz and Fitzek, {Harald Matthias} and Peter P{\"o}lt and Daniel Knez and Gerald Kothleitner and Ernst, {Wolfgang E.}",
year = "2019",
month = "5",
day = "21",
doi = "10.1140/epjd/e2019-90696-8",
language = "English",
volume = "73",
journal = "The European physical journal / D",
issn = "1434-6060",
publisher = "Springer New York",
number = "5",

}

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

T2 - The European physical journal / D

JF - The European physical journal / D

SN - 1434-6060

IS - 5

M1 - 104

ER -