HREELS studies of gold nanoparticles with dialkyl sulphide ligands

Y. Chen, R.E. Palmer, E.J. Shelley, J.A. Preece

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

We have employed high resolution electron energy loss spectroscopy (HREELS) to study low energy electron impact on films of gold nanoparticles passivated with dialkyl sulphide (H21C10SC10H21). HREEL spectra obtained in UHV show energy loss peaks due to CHx and CC vibrational modes of the organic ligands together with a mode at 230 cm(-1) assigned to the Au-S stretch. Measurements as a function of impact energy reveal resonances in the intensities centred between 9 and 12 eV. Prolonged exposure of the film to an electron beam at 50 eV, with a dosage of approximately 360 muC cm(-2) causes significant changes in the HREEL spectra. consistent with cleavage of the Au-S bond.

LanguageEnglish
Pages208-213
Number of pages6
JournalSurface Science
Volume502-503
DOIs
Publication statusPublished - 10 Apr 2002

Fingerprint

Electron energy loss spectroscopy
Sulfides
Gold
sulfides
energy dissipation
Ligands
electron energy
gold
Nanoparticles
nanoparticles
ligands
high resolution
spectroscopy
electron impact
cleavage
Electron beams
vibration mode
Energy dissipation
electron beams
dosage

Keywords

  • electron energy loss spectroscopy (EELS)
  • electron bombardment
  • radiation damage
  • clusters
  • sulphides
  • self-assembled monolayers
  • energy electron irradiation
  • alkanethiolate monolayers
  • nanocrystal superlattices
  • alkyl chains
  • surfaces
  • AU(111)
  • adsorption
  • scattering
  • substrate

Cite this

Chen, Y. ; Palmer, R.E. ; Shelley, E.J. ; Preece, J.A. / HREELS studies of gold nanoparticles with dialkyl sulphide ligands. In: Surface Science. 2002 ; Vol. 502-503. pp. 208-213.
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abstract = "We have employed high resolution electron energy loss spectroscopy (HREELS) to study low energy electron impact on films of gold nanoparticles passivated with dialkyl sulphide (H21C10SC10H21). HREEL spectra obtained in UHV show energy loss peaks due to CHx and CC vibrational modes of the organic ligands together with a mode at 230 cm(-1) assigned to the Au-S stretch. Measurements as a function of impact energy reveal resonances in the intensities centred between 9 and 12 eV. Prolonged exposure of the film to an electron beam at 50 eV, with a dosage of approximately 360 muC cm(-2) causes significant changes in the HREEL spectra. consistent with cleavage of the Au-S bond.",
keywords = "electron energy loss spectroscopy (EELS), electron bombardment, radiation damage, clusters, sulphides, self-assembled monolayers, energy electron irradiation, alkanethiolate monolayers, nanocrystal superlattices, alkyl chains, surfaces, AU(111), adsorption, scattering, substrate",
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HREELS studies of gold nanoparticles with dialkyl sulphide ligands. / Chen, Y.; Palmer, R.E.; Shelley, E.J.; Preece, J.A.

In: Surface Science, Vol. 502-503, 10.04.2002, p. 208-213.

Research output: Contribution to journalArticle

TY - JOUR

T1 - HREELS studies of gold nanoparticles with dialkyl sulphide ligands

AU - Chen, Y.

AU - Palmer, R.E.

AU - Shelley, E.J.

AU - Preece, J.A.

PY - 2002/4/10

Y1 - 2002/4/10

N2 - We have employed high resolution electron energy loss spectroscopy (HREELS) to study low energy electron impact on films of gold nanoparticles passivated with dialkyl sulphide (H21C10SC10H21). HREEL spectra obtained in UHV show energy loss peaks due to CHx and CC vibrational modes of the organic ligands together with a mode at 230 cm(-1) assigned to the Au-S stretch. Measurements as a function of impact energy reveal resonances in the intensities centred between 9 and 12 eV. Prolonged exposure of the film to an electron beam at 50 eV, with a dosage of approximately 360 muC cm(-2) causes significant changes in the HREEL spectra. consistent with cleavage of the Au-S bond.

AB - We have employed high resolution electron energy loss spectroscopy (HREELS) to study low energy electron impact on films of gold nanoparticles passivated with dialkyl sulphide (H21C10SC10H21). HREEL spectra obtained in UHV show energy loss peaks due to CHx and CC vibrational modes of the organic ligands together with a mode at 230 cm(-1) assigned to the Au-S stretch. Measurements as a function of impact energy reveal resonances in the intensities centred between 9 and 12 eV. Prolonged exposure of the film to an electron beam at 50 eV, with a dosage of approximately 360 muC cm(-2) causes significant changes in the HREEL spectra. consistent with cleavage of the Au-S bond.

KW - electron energy loss spectroscopy (EELS)

KW - electron bombardment

KW - radiation damage

KW - clusters

KW - sulphides

KW - self-assembled monolayers

KW - energy electron irradiation

KW - alkanethiolate monolayers

KW - nanocrystal superlattices

KW - alkyl chains

KW - surfaces

KW - AU(111)

KW - adsorption

KW - scattering

KW - substrate

U2 - 10.1016/S0039-6028(01)01934-3

DO - 10.1016/S0039-6028(01)01934-3

M3 - Article

VL - 502-503

SP - 208

EP - 213

JO - Surface Science

T2 - Surface Science

JF - Surface Science

SN - 0039-6028

ER -