Yu, Miao, Woodruff, D. P., Satterley, C. J., Jones, Robert G. and Dhanak, V. R. (2007) Structure of the pentylthiolate self-assembled monolayer on Ag(111). Journal of Physical Chemistry C, Vol.111 (No.27). pp. 10040-10048. doi:10.1021/jp072019v

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Abstract

A combination of scanning tunneling microscopy (STM), low-energy electron diffraction (LEED), and normal incidence X-ray standing waves (NIXSW) has been used to investigate the structure of the self-assembled monolayer (SAM) formed by pentylthiolate on Ag(111) in ultrahigh vacuum through interaction with pentanethiol. NIXSW data are closely similar to those for methythiolate on Ag(111) in the commensurate (root 7x root 7)R19 degrees phase and consistent with a similar adsorbate-induced reconstruction of the outermost Ag layer comprising only 3/7 ML of Ag atoms. However, both STM and LEED show that the local lateral periodicity is similar to 5% larger in the pentylthiolate phase and that the resulting SAM is not commensurate with the substrate. The results are discussed in the context of previously published results for other alkylthiolate SAMs on Ag(111).

Item Type:	Journal Article
Subjects:	Q Science > QD Chemistry T Technology T Technology > TA Engineering (General). Civil engineering (General)
Divisions:	Faculty of Science > Physics
Journal or Publication Title:	Journal of Physical Chemistry C
Publisher:	American Chemical Society
ISSN:	1932-7447
Official Date:	12 July 2007
Dates:	Date Event 12 July 2007 Published
Volume:	Vol.111
Number:	No.27
Number of Pages:	9
Page Range:	pp. 10040-10048
DOI:	10.1021/jp072019v
Status:	Peer Reviewed
Publication Status:	Published
Access rights to Published version:	Restricted or Subscription Access

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