Surface modification of copper with 2-dodecylpropane-1,3-dithiol: The key effect of the solvent

Copper; Self-assembled monolayers; Solvent effect; Alkanethiols; Chemical interactions; Copper substrates; Dithiols; Infrared reflection absorption spectroscopy; PM-IRRAS; Polarization modulation; Sams; Solvent effects; Surface modification; Absorption spectroscopy; Chemical reactivity; Cyclic voltammetry; Electron energy levels; Ethanol; Infrared spectroscopy; Organic polymers; Paraffins; Self assembled monolayers; Self assembly; Solvents; X ray photoelectron spectroscopy; Organic solvents

Abstract :

[en] Self-assembly of alkanethiol on gold in various solvents (alkane, alcohol, etc) leads to monolayers with similar properties. However when the self-assembly is performed on copper substrates, the nature of the solvent has an effect on the properties of the monolayer. This phenomenon arises from the chemical interaction of copper with the solvent, which is not the case of gold. Ethanol is a solvent widely used for self-assembly, however some studies pointed out its negative effect due to its significant chemical reactivity towards copper and its ability to chemisorb on the surface. The aim of this work consists in a comparative investigation of 2-dodecylpropane-1,3-dithiol (or R(SH)2) in various solvents and its ability to form stable SAMs, densely packed and well ordered. Characterizations of the SAMs are carried out using X-ray photoelectron spectroscopy (XPS), polarization modulation infrared reflection-absorption spectroscopy (PM-IRRAS) and cyclic voltammetry (CV). © 2009 Elsevier B.V. All rights reserved.

Disciplines :

Chemistry

Author, co-author :

Denayer, Jessica ; Université de Liège - ULiège > Département de chimie (sciences) > LCIS - GreenMAT

Delhalle, J.; Laboratory of Chemistry and Electrochemistry of Surfaces, Facultés Universitaires Notre-Dame de la Paix, Rue de Bruxelles 61, B-5000 Namur, Belgium

Mekhalif, Z.; Laboratory of Chemistry and Electrochemistry of Surfaces, Facultés Universitaires Notre-Dame de la Paix, Rue de Bruxelles 61, B-5000 Namur, Belgium

Language :

English

Title :

Surface modification of copper with 2-dodecylpropane-1,3-dithiol: The key effect of the solvent

Publication date :

2009

Journal title :

Applied Surface Science

ISSN :

0169-4332

Publisher :

Elsevier Science, Amsterdam, Netherlands

Volume :

256

Issue :

Pages :

1426-1430

Peer reviewed :

Peer Reviewed verified by ORBi

Available on ORBi :

since 14 February 2013

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