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Issue 25, 2011
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Relationship between the c(4×2) and the (√3×√3)R30° phases in alkanethiol self-assembled monolayers on Au(111)

Fangsen Li,ab  Lin Tang,b  Wancheng Zhoua  and  Quanmin Guo*b 
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* Corresponding authors

a State Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi'an 710072, P. R. China

b School of Physics & Astronomy, University of Birmingham, Birmingham B15 2TT, UK

Abstract

Transformation between the two well-known phases of alkanethiol monolayers on Au(111), c(4×2) and (√3×√3)R30°, has been studied using scanning tunneling microscopy in ultra-high vacuum. Among the many versions of the c(4×2) phases observed, one particular structure where a lateral shift of adsorbate by as much as 0.17 nm within the unit cell is found. This lateral shift along the [11[2 with combining macron]] direction corresponds to the movement of one adsorbed unit, towards its nearest neighbour from one hollow site to another (fcc to hcp, or hcp to fcc).

Graphical abstract: Relationship between the c(4×2) and the (√3×√3)R30° phases in alkanethiol self-assembled monolayers on Au(111)

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Publication details

The article was received on 05 Jan 2011, accepted on 05 May 2011 and first published on 25 May 2011


Article type: Paper
DOI: 10.1039/C1CP00037C
Citation: Phys. Chem. Chem. Phys., 2011,13, 11958-11964

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    Relationship between the c(4×2) and the (√3×√3)R30° phases in alkanethiol self-assembled monolayers on Au(111)

    F. Li, L. Tang, W. Zhou and Q. Guo, Phys. Chem. Chem. Phys., 2011, 13, 11958
    DOI: 10.1039/C1CP00037C

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