The diffusion of Au(CH3S)2 on Au(111) observed with the Scanning Tunneling Microscope

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The diffusion of Au(CH3S)2 on Au(111) observed with the Scanning Tunneling Microscope. / Holmes, Scott; Palmer, Richard; Guo, Quanmin.

In: Journal of Physical Chemistry C, Vol. 123, No. 39, 03.10.2019, p. 24104-24110.

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@article{52d38d8e855345448684dc80c16fa840,
title = "The diffusion of Au(CH3S)2 on Au(111) observed with the Scanning Tunneling Microscope",
abstract = "The diffusion of a three-legged molecule, CH3S-Au-SCH3, on Au(111) has been investigated using scanning tunnelling microscopy. Each of the two S atoms forms a bond with a Au atom in the Au(111) substrate. The Au atom in the molecule provides the third anchoring point via its interaction with Au(111). CH3S-Au-SCH3 hops as a single unit without breaking any of the S-Au bonds within the molecule at temperatures below 170 K, with an activation energy of 66 meV. The CH3S-Au-SCH3 molecules have a tendency to aggregate into rows driven by an attractive potential between neighbouring molecules, with the minimum row consisting of just two molecules in the form of a dimer. The dimer is much less mobile than a single molecule due to the attractive potential between the two molecules. The dimer is observed apparently to hop as a single unit with an activation energy of 210 meV. Detachment of a CH3S-Au-SCH3 molecule from the end of a row consisting three or more molecules takes place with an activation energy of 320 meV.",
author = "Scott Holmes and Richard Palmer and Quanmin Guo",
note = "Copyright {\textcopyright} 2019 American Chemical Society",
year = "2019",
month = oct
day = "3",
doi = "10.1021/acs.jpcc.9b06852",
language = "English",
volume = "123",
pages = "24104--24110",
journal = "Journal of Physical Chemistry C",
issn = "1932-7447",
publisher = "American Chemical Society",
number = "39",

}

RIS

TY - JOUR

T1 - The diffusion of Au(CH3S)2 on Au(111) observed with the Scanning Tunneling Microscope

AU - Holmes, Scott

AU - Palmer, Richard

AU - Guo, Quanmin

N1 - Copyright © 2019 American Chemical Society

PY - 2019/10/3

Y1 - 2019/10/3

N2 - The diffusion of a three-legged molecule, CH3S-Au-SCH3, on Au(111) has been investigated using scanning tunnelling microscopy. Each of the two S atoms forms a bond with a Au atom in the Au(111) substrate. The Au atom in the molecule provides the third anchoring point via its interaction with Au(111). CH3S-Au-SCH3 hops as a single unit without breaking any of the S-Au bonds within the molecule at temperatures below 170 K, with an activation energy of 66 meV. The CH3S-Au-SCH3 molecules have a tendency to aggregate into rows driven by an attractive potential between neighbouring molecules, with the minimum row consisting of just two molecules in the form of a dimer. The dimer is much less mobile than a single molecule due to the attractive potential between the two molecules. The dimer is observed apparently to hop as a single unit with an activation energy of 210 meV. Detachment of a CH3S-Au-SCH3 molecule from the end of a row consisting three or more molecules takes place with an activation energy of 320 meV.

AB - The diffusion of a three-legged molecule, CH3S-Au-SCH3, on Au(111) has been investigated using scanning tunnelling microscopy. Each of the two S atoms forms a bond with a Au atom in the Au(111) substrate. The Au atom in the molecule provides the third anchoring point via its interaction with Au(111). CH3S-Au-SCH3 hops as a single unit without breaking any of the S-Au bonds within the molecule at temperatures below 170 K, with an activation energy of 66 meV. The CH3S-Au-SCH3 molecules have a tendency to aggregate into rows driven by an attractive potential between neighbouring molecules, with the minimum row consisting of just two molecules in the form of a dimer. The dimer is much less mobile than a single molecule due to the attractive potential between the two molecules. The dimer is observed apparently to hop as a single unit with an activation energy of 210 meV. Detachment of a CH3S-Au-SCH3 molecule from the end of a row consisting three or more molecules takes place with an activation energy of 320 meV.

UR - http://www.scopus.com/inward/record.url?scp=85073106146&partnerID=8YFLogxK

U2 - 10.1021/acs.jpcc.9b06852

DO - 10.1021/acs.jpcc.9b06852

M3 - Article

VL - 123

SP - 24104

EP - 24110

JO - Journal of Physical Chemistry C

JF - Journal of Physical Chemistry C

SN - 1932-7447

IS - 39

ER -