HREELS studies of gold nanoparticles with dialkyl sulphide ligands

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

doi:10.1016/S0039-6028(01)01934-3

HREELS studies of gold nanoparticles with dialkyl sulphide ligands

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

Physics

Research output: Contribution to journal › Article › peer-review

14 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.

Original language	English
Pages (from-to)	208-213
Number of pages	6
Journal	Surface Science
Volume	502-503
DOIs	https://doi.org/10.1016/S0039-6028(01)01934-3
Publication status	Published - 10 Apr 2002

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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10.1016/S0039-6028(01)01934-3

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@article{022afbd430be4c91a8a7a9c9071a8a6e,

title = "HREELS studies of gold nanoparticles with dialkyl sulphide ligands",

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",

author = "Y. Chen and R.E. Palmer and E.J. Shelley and J.A. Preece",

year = "2002",

month = apr,

day = "10",

doi = "10.1016/S0039-6028(01)01934-3",

language = "English",

volume = "502-503",

pages = "208--213",

journal = "Surface Science",

issn = "0039-6028",

}

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

SN - 0039-6028

VL - 502-503

SP - 208

EP - 213

JO - Surface Science

JF - Surface Science

ER -

HREELS studies of gold nanoparticles with dialkyl sulphide ligands

Abstract

Keywords

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