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Accommodation of lattice mismatch in a thiol self-assembled monolayer

The structure of self-assembled monolayers (SAMs) of 3-(4′-(methylthio)-[1,1′-biphenyl]-4-yl)propane-1-thiol (CH3S(C6H4)2(CH2)3SH) formed on Au(111)/mica has been investigated by scanning tunneling microscopy (STM), high-resolution X-ray photoemission spectroscopy (HRXPS), near-edge X-ray absorption...

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Bibliographic Details
Main Authors: She, Zhe (Author) , Lahaye, Dorothée (Author) , Champness, Neil R. (Author) , Bühl, Michael (Author) , Hamoudi, Hicham (Author) , Zharnikov, Michael (Author) , Buck, Manfred (Author)
Format: Article (Journal)
Language:English
Published: 2013
In: The journal of physical chemistry. C, Energy, materials, and catalysis
Year: 2013, Volume: 117, Issue: 9, Pages: 4647-4656
ISSN:1932-7455
DOI:10.1021/jp311927z
Online Access:Verlag, lizenzpflichtig, Volltext: https://pubs.acs.org/doi/10.1021/jp311927z
Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1021/jp311927z
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Author Notes:Zhe She, Dorothée Lahaye, Neil R. Champness, Michael Bühl, Hicham Hamoudi, Michael Zharnikov, and Manfred Buck
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Summary:The structure of self-assembled monolayers (SAMs) of 3-(4′-(methylthio)-[1,1′-biphenyl]-4-yl)propane-1-thiol (CH3S(C6H4)2(CH2)3SH) formed on Au(111)/mica has been investigated by scanning tunneling microscopy (STM), high-resolution X-ray photoemission spectroscopy (HRXPS), near-edge X-ray absorption fine structure (NEXAFS) spectroscopy, and density functional theory (DFT) calculations. A highly crystalline monolayer terminated by thioether moieties is formed, which adopts a structure that differs from the previously studied CH3 terminated analogue with its 2√3 × √3 unit cell. An oblique 2√3 × √61 chiral unit cell containing 8 molecules is proposed. Accommodation of the substantial mismatch between the lattices of the SAM and substrate is explained by molecular design. Serving as a buffer layer, the alkane spacer decouples the SAM lattice, defined by the functionalized aromatic moieties, from the substrate.
Item Description:Published: February 4, 2013
Gesehen am 24.01.2022
Physical Description:Online Resource
ISSN:1932-7455
DOI:10.1021/jp311927z

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