Evolution of conformational order during self-assembly of n -alkanethiols on hg droplets: An infrared spectromicroscopy study

Christopher B. Babayco, Pauline J. Chang, Donald P. Land, Richard A. Kiehl, Atul N. Parikh

Research output: Contribution to journalArticle

4 Scopus citations

Abstract

This Letter describes Fourier-transform infrared spectroscopy evidence for the evolution of conformational order and coverage during the formation of n-alkanethiol monolayers on microdroplets of mercury from the solution phase. At the highest coverages obtained by self-assembly, the monolayer is characterized by predominantly all-trans conformational order. For partial monolayers obtained at arbitrarily quenched incubation periods, we find a continuous evolution of the chain conformational order with monolayer coverage. Analyzing these results in light of previously reported models from X-ray scattering reveals a complex self-assembly process in which the density-dependent evolution of the chain conformational order is coupled with that of molecular orientation and density.

Original languageEnglish (US)
Pages (from-to)8203-8207
Number of pages5
JournalLangmuir
Volume29
Issue number26
DOIs
StatePublished - Jul 2 2013
Externally publishedYes

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Spectroscopy
  • Electrochemistry

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