Synthesis and characterization of mixed methyl/allyl monolayers on Si(111)

Leslie E. O'Leary; Erik Johansson; Bruce S. Brunschwig; Nathan S. Lewis

doi:10.1021/jp911379c

Synthesis and characterization of mixed methyl/allyl monolayers on Si(111)

Leslie E. O'Leary, Erik Johansson, Bruce S. Brunschwig, Nathan S. Lewis

California Institute of Technology

Research output: Contribution to journal › Article › peer-review

49 Citations (Scopus)

Abstract

The formation of mixed methyl/allyl monolayers has been accomplished through a two-step halogenation/ alkylation reaction on Si(111) surfaces. The total coverage of alkylated Si, the surface recombination velocities, and the degree of surface oxidation as a function of time have been investigated using X-ray photoelectron spectroscopy, Fourier-transform infrared spectroscopy, and microwave conductivity measurements. The total coverage of alkyl groups, the rate of oxidation, and the surface recombination velocities of Si(111) terminated by mixed monolayers were found to be close to those observed for CH₃-Si(111) surfaces. Hence, the mixedmonolayer surfaces retained the beneficial properties of CH₃-Si(111) surfaces while allowing for convenient secondary surface functionalization.

Original language	English
Pages (from-to)	14298-14302
Number of pages	5
Journal	Journal of Physical Chemistry B
Volume	114
Issue number	45
DOIs	https://doi.org/10.1021/jp911379c
Publication status	Published - Dec 8 2010

ASJC Scopus subject areas

Physical and Theoretical Chemistry
Surfaces, Coatings and Films
Materials Chemistry

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title = "Synthesis and characterization of mixed methyl/allyl monolayers on Si(111)",

abstract = "The formation of mixed methyl/allyl monolayers has been accomplished through a two-step halogenation/ alkylation reaction on Si(111) surfaces. The total coverage of alkylated Si, the surface recombination velocities, and the degree of surface oxidation as a function of time have been investigated using X-ray photoelectron spectroscopy, Fourier-transform infrared spectroscopy, and microwave conductivity measurements. The total coverage of alkyl groups, the rate of oxidation, and the surface recombination velocities of Si(111) terminated by mixed monolayers were found to be close to those observed for CH3-Si(111) surfaces. Hence, the mixedmonolayer surfaces retained the beneficial properties of CH3-Si(111) surfaces while allowing for convenient secondary surface functionalization.",

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AU - O'Leary, Leslie E.

AU - Johansson, Erik

AU - Brunschwig, Bruce S.

AU - Lewis, Nathan S.

PY - 2010/12/8

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N2 - The formation of mixed methyl/allyl monolayers has been accomplished through a two-step halogenation/ alkylation reaction on Si(111) surfaces. The total coverage of alkylated Si, the surface recombination velocities, and the degree of surface oxidation as a function of time have been investigated using X-ray photoelectron spectroscopy, Fourier-transform infrared spectroscopy, and microwave conductivity measurements. The total coverage of alkyl groups, the rate of oxidation, and the surface recombination velocities of Si(111) terminated by mixed monolayers were found to be close to those observed for CH3-Si(111) surfaces. Hence, the mixedmonolayer surfaces retained the beneficial properties of CH3-Si(111) surfaces while allowing for convenient secondary surface functionalization.

AB - The formation of mixed methyl/allyl monolayers has been accomplished through a two-step halogenation/ alkylation reaction on Si(111) surfaces. The total coverage of alkylated Si, the surface recombination velocities, and the degree of surface oxidation as a function of time have been investigated using X-ray photoelectron spectroscopy, Fourier-transform infrared spectroscopy, and microwave conductivity measurements. The total coverage of alkyl groups, the rate of oxidation, and the surface recombination velocities of Si(111) terminated by mixed monolayers were found to be close to those observed for CH3-Si(111) surfaces. Hence, the mixedmonolayer surfaces retained the beneficial properties of CH3-Si(111) surfaces while allowing for convenient secondary surface functionalization.

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