Stability and flexibility of self-assembled monolayers of thiols consisting of a horizontal large π-system and a vertical spacer

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Author(s)

  • Rui-Fen Dou
  • Xu-Cun Ma
  • Luan Xi
  • King Young Wong
  • Woon Ming Lau
  • Xiao-Li Fan
  • Jin-Feng Jia
  • Qi-Kun Xue
  • W S Yang
  • Hong Ma

Detail(s)

Original languageEnglish
Article number315012
Journal / PublicationJournal of Physics: Condensed Matter
Volume20
Issue number31
Online published17 Jul 2008
Publication statusPublished - 6 Aug 2008
Externally publishedYes

Abstract

Self-assembled monolayers (SAMs) of (4-mercaptophenyl) (10-nitro-9-anthryl) acetylene (MPNAA) on Au(111) are studied with scanning tunneling microscopy (STM). Through careful analysis of the bias-dependent sub-molecular features observed in the high-resolution STM images, important structural details of the MPNAA SAM are disclosed, in addition to its structural character common for the anthracene-based thiol SAMs studied in a recent paper (Dou et al 2006 Langmuir 22 3049). With these experimental results, a new model is proposed for the SAM structure to explain, particularly, the molecule-substrate, molecule-molecule and intramolecular interactions, as well as their competitions and compromises in the formation of the SAM structure. Flexibilities and application potentials of the SAMs of thiols based on a long π-system (like that of anthracene or even pentacene) arranged horizontally and a vertical spacer (like the phenyl-acetylene group) are also discussed. © IOP Publishing Ltd.

Citation Format(s)

Stability and flexibility of self-assembled monolayers of thiols consisting of a horizontal large π-system and a vertical spacer. / Dou, Rui-Fen; Ma, Xu-Cun; Xi, Luan; Yip, Hin Lap; Wong, King Young; Lau, Woon Ming; Fan, Xiao-Li; Jia, Jin-Feng; Xue, Qi-Kun; Yang, W S; Ma, Hong; Jen, Alex K-Y.

In: Journal of Physics: Condensed Matter, Vol. 20, No. 31, 315012, 06.08.2008.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review