Ion-induced erosion of organic self-assembled monolayers

P. Cyganik; Z. Postawa; C. A. Meserole; E. Vandeweert; N. Winograd

doi:10.1016/S0168-583X(98)00751-4

Ion-induced erosion of organic self-assembled monolayers

P. Cyganik, Z. Postawa, C. A. Meserole, E. Vandeweert, N. Winograd

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

13 Scopus citations

Abstract

Laser post-ionization mass spectrometry combined with Scanning Tunneling Microscopy (STM) has been used to investigate processes of ion-stimulated erosion of self-assembled monolayers (SAM) of phenethyl mercaptan C₆H₅CH₂CH₂S (PEM) deposited on gold. Results indicate that only PEM fragments are emitted from the surface. Most of the PEM fragments (predominantly C₆H₅CH₂CH₃ with m/z= 106) are emitted with thermal kinetic energies. STM images collected on 8 keV H₂⁺-irradiated surfaces with a system tuned to probe electronic states of sulfur atoms show no additional damage induced by irradiation. This indicates that sulfur atoms are not removed from the surface during hydrogen bombardment. It is proposed that the emission of SAM molecules is initiated by chemical reactions which gently break C-S bonds.

Original language	English (US)
Pages (from-to)	137-142
Number of pages	6
Journal	Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
Volume	148
Issue number	1-4
DOIs	https://doi.org/10.1016/S0168-583X(98)00751-4
State	Published - 1999

All Science Journal Classification (ASJC) codes

Nuclear and High Energy Physics
Instrumentation

Access to Document

10.1016/S0168-583X(98)00751-4

Cite this

@article{d43cef163fa4498fb119bb76bccbaeff,

title = "Ion-induced erosion of organic self-assembled monolayers",

abstract = "Laser post-ionization mass spectrometry combined with Scanning Tunneling Microscopy (STM) has been used to investigate processes of ion-stimulated erosion of self-assembled monolayers (SAM) of phenethyl mercaptan C6H5CH2CH2S (PEM) deposited on gold. Results indicate that only PEM fragments are emitted from the surface. Most of the PEM fragments (predominantly C6H5CH2CH3 with m/z= 106) are emitted with thermal kinetic energies. STM images collected on 8 keV H2+-irradiated surfaces with a system tuned to probe electronic states of sulfur atoms show no additional damage induced by irradiation. This indicates that sulfur atoms are not removed from the surface during hydrogen bombardment. It is proposed that the emission of SAM molecules is initiated by chemical reactions which gently break C-S bonds.",

author = "P. Cyganik and Z. Postawa and Meserole, {C. A.} and E. Vandeweert and N. Winograd",

note = "Funding Information: We would like to acknowledge the financial support of the US National Science Foundation, the US National Institutes of Health, the US Office of Naval Research, the Polish Committee for Scientific Research fund no PB1128/T08/96/11 and Maria Sklodowska-Curie Foundation fund no MEN/NSF-97-306. E.V. is partially supported by the Fulbright-Hayes Association and a NATO Research Fellowship. We would like to thank Prof. M. Szymonski for an access to the STM probe located at the Regional Laboratory of Physical and Chemical Analysis of Jagiellonian University. ",

year = "1999",

doi = "10.1016/S0168-583X(98)00751-4",

language = "English (US)",

volume = "148",

pages = "137--142",

journal = "Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms",

issn = "0168-583X",

publisher = "Elsevier B.V.",

number = "1-4",

}

TY - JOUR

T1 - Ion-induced erosion of organic self-assembled monolayers

AU - Cyganik, P.

AU - Postawa, Z.

AU - Meserole, C. A.

AU - Vandeweert, E.

AU - Winograd, N.

N1 - Funding Information: We would like to acknowledge the financial support of the US National Science Foundation, the US National Institutes of Health, the US Office of Naval Research, the Polish Committee for Scientific Research fund no PB1128/T08/96/11 and Maria Sklodowska-Curie Foundation fund no MEN/NSF-97-306. E.V. is partially supported by the Fulbright-Hayes Association and a NATO Research Fellowship. We would like to thank Prof. M. Szymonski for an access to the STM probe located at the Regional Laboratory of Physical and Chemical Analysis of Jagiellonian University.

PY - 1999

Y1 - 1999

N2 - Laser post-ionization mass spectrometry combined with Scanning Tunneling Microscopy (STM) has been used to investigate processes of ion-stimulated erosion of self-assembled monolayers (SAM) of phenethyl mercaptan C6H5CH2CH2S (PEM) deposited on gold. Results indicate that only PEM fragments are emitted from the surface. Most of the PEM fragments (predominantly C6H5CH2CH3 with m/z= 106) are emitted with thermal kinetic energies. STM images collected on 8 keV H2+-irradiated surfaces with a system tuned to probe electronic states of sulfur atoms show no additional damage induced by irradiation. This indicates that sulfur atoms are not removed from the surface during hydrogen bombardment. It is proposed that the emission of SAM molecules is initiated by chemical reactions which gently break C-S bonds.

AB - Laser post-ionization mass spectrometry combined with Scanning Tunneling Microscopy (STM) has been used to investigate processes of ion-stimulated erosion of self-assembled monolayers (SAM) of phenethyl mercaptan C6H5CH2CH2S (PEM) deposited on gold. Results indicate that only PEM fragments are emitted from the surface. Most of the PEM fragments (predominantly C6H5CH2CH3 with m/z= 106) are emitted with thermal kinetic energies. STM images collected on 8 keV H2+-irradiated surfaces with a system tuned to probe electronic states of sulfur atoms show no additional damage induced by irradiation. This indicates that sulfur atoms are not removed from the surface during hydrogen bombardment. It is proposed that the emission of SAM molecules is initiated by chemical reactions which gently break C-S bonds.

UR - http://www.scopus.com/inward/record.url?scp=0033513703&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0033513703&partnerID=8YFLogxK

U2 - 10.1016/S0168-583X(98)00751-4

DO - 10.1016/S0168-583X(98)00751-4

M3 - Article

AN - SCOPUS:0033513703

SN - 0168-583X

VL - 148

SP - 137

EP - 142

JO - Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms

JF - Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms

IS - 1-4

ER -

Ion-induced erosion of organic self-assembled monolayers

Abstract

All Science Journal Classification (ASJC) codes

Access to Document

Other files and links

Fingerprint

Cite this