Sequestration of carbonaceous species within alkanethiol self-assembled monolayers on Ag by Raman spectroscopy

Chad E. Taylor; Mark H. Schoenfisch; Jeanne E. Pemberton

doi:10.1021/la990061e

Sequestration of carbonaceous species within alkanethiol self-assembled monolayers on Ag by Raman spectroscopy

Chad E. Taylor, Mark H. Schoenfisch, Jeanne E. Pemberton

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

22 Scopus citations

Abstract

Raman spectra of hydrogenated C_nSH (where, n=3-5,8,9,12, and 18) and C₈D₁₇SH SAMs at mechanically polished (MP) Ag indicate monolayer contamination by a small polyaromatic hydrocarbon (PAH). The contaminant source at the unmodified MP Ag surface is identified using Raman spectroscopy, and thus, the contaminant is believed to be placed at this surface during the mechanical polishing procedure. Notably, the PAH contaminant is not completely removed by either solvent dissolution or alkanethiol adsorption, suggesting that it is strongly bound, and more significantly, sequestered within the alkanethiol SAM. Controlled incorporation of pyrene into dodecanethiol SAMs demonstrates that doping of alkanethiol SAMs may be possible for certain systems.

Original language	English (US)
Pages (from-to)	2902-2906
Number of pages	5
Journal	Langmuir
Volume	16
Issue number	6
DOIs	https://doi.org/10.1021/la990061e
State	Published - Mar 21 2000

ASJC Scopus subject areas

General Materials Science
Condensed Matter Physics
Surfaces and Interfaces
Spectroscopy
Electrochemistry

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title = "Sequestration of carbonaceous species within alkanethiol self-assembled monolayers on Ag by Raman spectroscopy",

abstract = "Raman spectra of hydrogenated CnSH (where, n=3-5,8,9,12, and 18) and C8D17SH SAMs at mechanically polished (MP) Ag indicate monolayer contamination by a small polyaromatic hydrocarbon (PAH). The contaminant source at the unmodified MP Ag surface is identified using Raman spectroscopy, and thus, the contaminant is believed to be placed at this surface during the mechanical polishing procedure. Notably, the PAH contaminant is not completely removed by either solvent dissolution or alkanethiol adsorption, suggesting that it is strongly bound, and more significantly, sequestered within the alkanethiol SAM. Controlled incorporation of pyrene into dodecanethiol SAMs demonstrates that doping of alkanethiol SAMs may be possible for certain systems.",

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T1 - Sequestration of carbonaceous species within alkanethiol self-assembled monolayers on Ag by Raman spectroscopy

AU - Taylor, Chad E.

AU - Schoenfisch, Mark H.

AU - Pemberton, Jeanne E.

PY - 2000/3/21

Y1 - 2000/3/21

N2 - Raman spectra of hydrogenated CnSH (where, n=3-5,8,9,12, and 18) and C8D17SH SAMs at mechanically polished (MP) Ag indicate monolayer contamination by a small polyaromatic hydrocarbon (PAH). The contaminant source at the unmodified MP Ag surface is identified using Raman spectroscopy, and thus, the contaminant is believed to be placed at this surface during the mechanical polishing procedure. Notably, the PAH contaminant is not completely removed by either solvent dissolution or alkanethiol adsorption, suggesting that it is strongly bound, and more significantly, sequestered within the alkanethiol SAM. Controlled incorporation of pyrene into dodecanethiol SAMs demonstrates that doping of alkanethiol SAMs may be possible for certain systems.

AB - Raman spectra of hydrogenated CnSH (where, n=3-5,8,9,12, and 18) and C8D17SH SAMs at mechanically polished (MP) Ag indicate monolayer contamination by a small polyaromatic hydrocarbon (PAH). The contaminant source at the unmodified MP Ag surface is identified using Raman spectroscopy, and thus, the contaminant is believed to be placed at this surface during the mechanical polishing procedure. Notably, the PAH contaminant is not completely removed by either solvent dissolution or alkanethiol adsorption, suggesting that it is strongly bound, and more significantly, sequestered within the alkanethiol SAM. Controlled incorporation of pyrene into dodecanethiol SAMs demonstrates that doping of alkanethiol SAMs may be possible for certain systems.

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Sequestration of carbonaceous species within alkanethiol self-assembled monolayers on Ag by Raman spectroscopy

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