New Semifluorinated Dithiols Self-Assembled Monolayers on Copper Platform

Research output: Contribution to journalArticle

Abstract

New α,ω-semifluorinated dithiols HS-(CH2) 11-(CF2)n-(CH2)11-SH( called DTn, and corresponding dithioacetate molecules CH3COS-(CH 2)11-(CF2)11-(CH2) 11-SCOCH3, called DTAn (n = 4, 6, 8), were synthesized and used to create self-assembled monolayers (SAMs) on both untreated copper surfaces and electrochemically reduced ones. The aim of this study is to assess the organization of the resulting SAMs, particularly the effect of the presence of two perhydrogenated segments surrounding the perfluorinated one, and the ability of these difunctional molecules to bind copper substrates by only one end per molecule. In each case, the organization of the SAM is rather poor and only DTA8 molecules seem to adopt an upright position on reduced copper. In addition, the layers have been investigated by cyclic voltammetry (CV) to assess their coverage. DT4 SAMs reveal a covering ratio higher than 99%. © 2008 American Chemical Society.

Original languageEnglish
Pages (from-to)10879-10886
Number of pages8
JournalLangmuir
Volume24
Issue number19
DOIs
Publication statusPublished - 7 Oct 2008

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Self assembled monolayers
thiols
Copper
platforms
copper
Molecules
molecules
Cyclic voltammetry
coverings
methylidyne
dithiol
Substrates

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@article{24789fb9d84b46ddb108378619c14745,
title = "New Semifluorinated Dithiols Self-Assembled Monolayers on Copper Platform",
abstract = "New α,ω-semifluorinated dithiols HS-(CH2) 11-(CF2)n-(CH2)11-SH( called DTn, and corresponding dithioacetate molecules CH3COS-(CH 2)11-(CF2)11-(CH2) 11-SCOCH3, called DTAn (n = 4, 6, 8), were synthesized and used to create self-assembled monolayers (SAMs) on both untreated copper surfaces and electrochemically reduced ones. The aim of this study is to assess the organization of the resulting SAMs, particularly the effect of the presence of two perhydrogenated segments surrounding the perfluorinated one, and the ability of these difunctional molecules to bind copper substrates by only one end per molecule. In each case, the organization of the SAM is rather poor and only DTA8 molecules seem to adopt an upright position on reduced copper. In addition, the layers have been investigated by cyclic voltammetry (CV) to assess their coverage. DT4 SAMs reveal a covering ratio higher than 99{\%}. {\circledC} 2008 American Chemical Society.",
author = "Sebastien Devillers and Claire Amato and Patrick Calas and Joseph Delhalle and Zineb Mekhalif",
year = "2008",
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New Semifluorinated Dithiols Self-Assembled Monolayers on Copper Platform. / Devillers, Sebastien; Amato, Claire; Calas, Patrick; Delhalle, Joseph; Mekhalif, Zineb.

In: Langmuir, Vol. 24, No. 19, 07.10.2008, p. 10879-10886.

Research output: Contribution to journalArticle

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