Small size limit to self-assembled monolayer formation on gold(111)

Joyanta K. Saha, Yoonho Ahn, Hyojeong Kim, George C. Schatz, Joonkyung Jang

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

Using molecular dynamics simulations, we show that the minimum diameter of ordered self-assembled monolayer (SAM) structures of alkanethiols on Au(111) is 1.9 nm at room temperature. This presumably sets the ultimate resolution of the SAM patterns created by nanolithography. For SAMs larger than 1.9 nm, the tilt direction of the alkyl chain precesses around the center of the SAM. This precession changes direction on a time scale that increases from picoseconds to nanoseconds as the SAM size varies from 2 to 3 nm.

Original languageEnglish
Pages (from-to)13193-13199
Number of pages7
JournalJournal of Physical Chemistry C
Volume115
Issue number27
DOIs
Publication statusPublished - Jul 14 2011

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Energy(all)
  • Physical and Theoretical Chemistry
  • Surfaces, Coatings and Films

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