Adsorption properties of decyl thiocyanate and decanethiol on platinum substrates studied by sum-frequency generation spectroscopy

Yannick Sartenaer, Laurent Dreesen, Christophe Humbert, Cedric Volcke, Gerard Tourillon, Pierre Louette, Paul Thiry, André Peremans

Research output: Contribution to journalArticle

Abstract

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 (STM) and X-Ray Photoelectron Spectroscopy (XPS).
Original languageEnglish
Pages (from-to)1259-1264
Number of pages6
JournalSurface Science
Volume601
Publication statusPublished - 2007

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Self assembled monolayers
Platinum
platinum
Spectroscopy
Adsorption
adsorption
Substrates
thiols
methylene
assemblies
spectroscopy
self assembly
scanning tunneling microscopy
vibration mode
photoelectron spectroscopy
Scanning tunneling microscopy
Self assembly
X ray photoelectron spectroscopy
Sulfhydryl Compounds
molecules

Cite this

Sartenaer, Y., Dreesen, L., Humbert, C., Volcke, C., Tourillon, G., Louette, P., ... Peremans, A. (2007). Adsorption properties of decyl thiocyanate and decanethiol on platinum substrates studied by sum-frequency generation spectroscopy. Surface Science, 601, 1259-1264.
Sartenaer, Yannick ; Dreesen, Laurent ; Humbert, Christophe ; Volcke, Cedric ; Tourillon, Gerard ; Louette, Pierre ; Thiry, Paul ; Peremans, André. / Adsorption properties of decyl thiocyanate and decanethiol on platinum substrates studied by sum-frequency generation spectroscopy. In: Surface Science. 2007 ; Vol. 601. pp. 1259-1264.
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Sartenaer, Y, Dreesen, L, Humbert, C, Volcke, C, Tourillon, G, Louette, P, Thiry, P & Peremans, A 2007, 'Adsorption properties of decyl thiocyanate and decanethiol on platinum substrates studied by sum-frequency generation spectroscopy', Surface Science, vol. 601, pp. 1259-1264.

Adsorption properties of decyl thiocyanate and decanethiol on platinum substrates studied by sum-frequency generation spectroscopy. / Sartenaer, Yannick; Dreesen, Laurent; Humbert, Christophe; Volcke, Cedric; Tourillon, Gerard; Louette, Pierre; Thiry, Paul; Peremans, André.

In: Surface Science, Vol. 601, 2007, p. 1259-1264.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Adsorption properties of decyl thiocyanate and decanethiol on platinum substrates studied by sum-frequency generation spectroscopy

AU - Sartenaer, Yannick

AU - Dreesen, Laurent

AU - Humbert, Christophe

AU - Volcke, Cedric

AU - Tourillon, Gerard

AU - Louette, Pierre

AU - Thiry, Paul

AU - Peremans, André

PY - 2007

Y1 - 2007

N2 - 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 (STM) and X-Ray Photoelectron Spectroscopy (XPS).

AB - 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 (STM) and X-Ray Photoelectron Spectroscopy (XPS).

M3 - Article

VL - 601

SP - 1259

EP - 1264

JO - Surface Science

JF - Surface Science

SN - 0039-6028

ER -