Adsorption and desorption of electroactive self-assembled thiolate monolayers on gold

Raluca Voicu; Thomas H. Ellis; Huangxian Ju; Dónal Leech

doi:10.1021/la990315w

Adsorption and desorption of electroactive self-assembled thiolate monolayers on gold

Raluca Voicu, Thomas H. Ellis, Huangxian Ju, Dónal Leech

Cellular & Molecular Medicine

Research output: Contribution to a Journal (Peer & Non Peer) › Article › peer-review

29 Citations (Scopus)

Abstract

The influence of different chemical pretreatments on the formation and electrochemistry of self-assembled mixed monolayers of 11-(ferrocenylcarbonyloxy)undecanethiol and n-decanethiol was examined using cyclic voltammetry (CV) and X-ray Photoelectron Spectroscopy (XPS). The 'hot-etched' pretreated surface yields mixed monolayers with higher surface coverages of the electroactive thiol than a 'cold-etched' surface. It is proposed that the former surface presents a greater percentage of higher energy binding sites than the latter surface. The higher stability of these sites for the ferrocenylalkanethiolate is confirmed by desorption experiments in ethanol. The electroactive species are shown to be in dynamic adsorption/desorption equilibrium with the ethanol solution, which helps to explain a number of important properties.

Original language	English
Pages (from-to)	8170-8177
Number of pages	8
Journal	Langmuir
Volume	15
Issue number	23
DOIs	https://doi.org/10.1021/la990315w
Publication status	Published - 9 Nov 1999

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title = "Adsorption and desorption of electroactive self-assembled thiolate monolayers on gold",

abstract = "The influence of different chemical pretreatments on the formation and electrochemistry of self-assembled mixed monolayers of 11-(ferrocenylcarbonyloxy)undecanethiol and n-decanethiol was examined using cyclic voltammetry (CV) and X-ray Photoelectron Spectroscopy (XPS). The 'hot-etched' pretreated surface yields mixed monolayers with higher surface coverages of the electroactive thiol than a 'cold-etched' surface. It is proposed that the former surface presents a greater percentage of higher energy binding sites than the latter surface. The higher stability of these sites for the ferrocenylalkanethiolate is confirmed by desorption experiments in ethanol. The electroactive species are shown to be in dynamic adsorption/desorption equilibrium with the ethanol solution, which helps to explain a number of important properties.",

author = "Raluca Voicu and Ellis, \{Thomas H.\} and Huangxian Ju and D{\'o}nal Leech",

year = "1999",

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T1 - Adsorption and desorption of electroactive self-assembled thiolate monolayers on gold

AU - Voicu, Raluca

AU - Ellis, Thomas H.

AU - Ju, Huangxian

AU - Leech, Dónal

PY - 1999/11/9

Y1 - 1999/11/9

N2 - The influence of different chemical pretreatments on the formation and electrochemistry of self-assembled mixed monolayers of 11-(ferrocenylcarbonyloxy)undecanethiol and n-decanethiol was examined using cyclic voltammetry (CV) and X-ray Photoelectron Spectroscopy (XPS). The 'hot-etched' pretreated surface yields mixed monolayers with higher surface coverages of the electroactive thiol than a 'cold-etched' surface. It is proposed that the former surface presents a greater percentage of higher energy binding sites than the latter surface. The higher stability of these sites for the ferrocenylalkanethiolate is confirmed by desorption experiments in ethanol. The electroactive species are shown to be in dynamic adsorption/desorption equilibrium with the ethanol solution, which helps to explain a number of important properties.

AB - The influence of different chemical pretreatments on the formation and electrochemistry of self-assembled mixed monolayers of 11-(ferrocenylcarbonyloxy)undecanethiol and n-decanethiol was examined using cyclic voltammetry (CV) and X-ray Photoelectron Spectroscopy (XPS). The 'hot-etched' pretreated surface yields mixed monolayers with higher surface coverages of the electroactive thiol than a 'cold-etched' surface. It is proposed that the former surface presents a greater percentage of higher energy binding sites than the latter surface. The higher stability of these sites for the ferrocenylalkanethiolate is confirmed by desorption experiments in ethanol. The electroactive species are shown to be in dynamic adsorption/desorption equilibrium with the ethanol solution, which helps to explain a number of important properties.

UR - https://www.scopus.com/pages/publications/0033344474

U2 - 10.1021/la990315w

DO - 10.1021/la990315w

M3 - Article

SN - 0743-7463

VL - 15

SP - 8170

EP - 8177

JO - Langmuir

JF - Langmuir

IS - 23

ER -

Adsorption and desorption of electroactive self-assembled thiolate monolayers on gold

Abstract

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