Article (Scientific journals)
Adsorption properties of decyl thiocyanate and decanethiol on platinum substrates studied by sum-frequency generation spectroscopy
Sartenaer, Yannick; Dreesen, Laurent; Humbert, Christophe et al.
2007In Surface Science, 601, p. 1259-1264
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Abstract :
[en] Recently, thiocyanate groups were successfully used as precursors for thiolate assemblies. Indeed, they provide a useful alternative to thiol groups for self-assembly on metallic substrates. In order to check the adsorption properties and the quality of the thiocyanate-based self-assembled monolayers (SAMs), we use sum-frequency generation spectroscopy (SFG) and apply it to characterize the ad-layers of two similar molecules: decanethiol (DT) and decyl thiocyanate (DTCN) adsorbed on platinum surfaces. By comparing the SFG signals of the methyl and methylene vibration modes, we show that DTCN SAMs are less ordered than DT ones. These effects are related to the SAMs quality which depends on the molecular packing as highlighted by scanning tunnelling microscopy and X-ray photoelectron spectroscopy.
Disciplines :
Physics
Author, co-author :
Sartenaer, Yannick
Dreesen, Laurent ;  Université de Liège - ULiège > Département de physique > Biophotonique
Humbert, Christophe
Volcke, Cédric
Tourillon, Gérard
Louette, Pierre
Thiry, P. A.
Peremans, André
Language :
English
Title :
Adsorption properties of decyl thiocyanate and decanethiol on platinum substrates studied by sum-frequency generation spectroscopy
Publication date :
2007
Journal title :
Surface Science
ISSN :
0039-6028
Publisher :
Elsevier Science, Amsterdam, Netherlands
Volume :
601
Pages :
1259-1264
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 26 October 2009

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