Effects of Electrolyte and Potential on the in Situ Structure of Alkanethiol Self-Assembled Monolayers on Silver

Mark H. Schoenfisch, Jeanne E. Pemberton

Research output: Contribution to journalArticle

51 Scopus citations

Abstract

Surface Raman spectroscopy using an emersion approach has been utilized to study the effects of electrolyte and applied potential on the in situ structure and conformational order of self-assembled monolayers (SAMs)formed from n-alkanethiols on smooth Ag surfaces. Vibrational information in the v(C-S), v(C-C), d(C-H), and v(C-H) regions is particularly useful in elucidating the degree of order and presence of defects in the monolayer before and after exposure of the SAM to electrolyte and potential. Spectral results from these studies suggest that aqueous 0.1 M electrolytes (NaF, NaCI, NaSCN, NaOH, H2SO4) and potential have different effects on the order of the SAMs studied. The order of short chain alkanethiol SAMs is more easily affected by electrolyte and potential than that of the longer chain SAMs.

Original languageEnglish (US)
Pages (from-to)509-517
Number of pages9
JournalLangmuir
Volume15
Issue number2
DOIs
StatePublished - 1999

ASJC Scopus subject areas

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

Fingerprint Dive into the research topics of 'Effects of Electrolyte and Potential on the in Situ Structure of Alkanethiol Self-Assembled Monolayers on Silver'. Together they form a unique fingerprint.

Cite this