Infrared vibrational spectroscopy of isotopically labeled ethyl-terminated Si(111) surfaces prepared using a two-step chlorination/alkylation procedure

Erik Johansson, Patrick T. Hurley, Bruce S. Brunschwig, Nathan S Lewis

Research output: Contribution to journalArticle

21 Citations (Scopus)

Abstract

Fourier transform infrared (FTIR) spectroscopy was used to investigate C2H5-Si(111) surfaces prepared using a chlorination/alkylation method. After alkylation, in addition to ethyl groups, such surfaces showed the presence of hydrogen bonded to atop silicon surface atoms. Systematic isotopic substitution of protic solvents and reagents with their fully or partially deuterated counterparts revealed the origin of the surface-bound hydrogen on the C2H5-Si(111) surfaces. The presence or absence of the Si-H stretch at 2080 cm-1 and the Si-D stretch at ∼1510 cm-1, respectively, indicated that the hydrogen originated from the methyl group of the ethyl Grignard reagent.

Original languageEnglish
Pages (from-to)15239-15245
Number of pages7
JournalJournal of Physical Chemistry C
Volume113
Issue number34
DOIs
Publication statusPublished - Aug 27 2009

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Vibrational spectroscopy
chlorination
Chlorination
alkylation
Alkylation
Infrared spectroscopy
Hydrogen
spectroscopy
reagents
hydrogen
Silicon
Fourier transform infrared spectroscopy
Substitution reactions
infrared spectroscopy
substitutes
Atoms
silicon
atoms

ASJC Scopus subject areas

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

Cite this

Infrared vibrational spectroscopy of isotopically labeled ethyl-terminated Si(111) surfaces prepared using a two-step chlorination/alkylation procedure. / Johansson, Erik; Hurley, Patrick T.; Brunschwig, Bruce S.; Lewis, Nathan S.

In: Journal of Physical Chemistry C, Vol. 113, No. 34, 27.08.2009, p. 15239-15245.

Research output: Contribution to journalArticle

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