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

Publikation: Beitrag in einer FachzeitschriftArtikelForschungBegutachtung

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.].

Originalspracheenglisch
Aufsatznummer104
FachzeitschriftThe European physical journal / D
Jahrgang73
Ausgabenummer5
DOIs
PublikationsstatusVeröffentlicht - 21 Mai 2019

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

Schlagwörter

    ASJC Scopus subject areas

    • !!Atomic and Molecular Physics, and Optics

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    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.].",
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    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.}",
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    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 -