Electrochemical Performance of Self-Assembled Monolayer Gold Nanoparticle-Modified Ultramicroelectrode Array Architectures

Jahir Orozco; Cecilia Jiménez-Jorquera; César Fernández-Sánchez

doi:10.1002/elan.201100599

Electrochemical Performance of Self-Assembled Monolayer Gold Nanoparticle-Modified Ultramicroelectrode Array Architectures

Jahir Orozco, Cecilia Jiménez-Jorquera, César Fernández-Sánchez

Research output: Contribution to journal › Article › Research › peer-review

6 Citations (Scopus)

Abstract

Surface architectures based on gold nanoparticles (AuNPs) electrodeposited on gold ultramicroelectrode arrays (UMEAs) and further modified with self-assembled monolayers (SAMs) of two different thiol molecules were evaluated. The voltammetric behavior of the resulting electrochemical transducer approaches appeared to be fairly different compared to that of SAM-modified UMEAs and microelectrode counterparts. Such behavior indicates that the electrodeposited AuNPs played a key role in the arrangement of the thiolated probes and the electron transfer processes at the transducer solution interface. A detailed description of this phenomenon was carried out with the aim of showing the potential of the presented SAM-AuNP-UMEA based transducer to develop robust biosensor approaches. © 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

Original language	English
Pages (from-to)	635-642
Journal	Electroanalysis
Volume	24
Issue number	3
DOIs	https://doi.org/10.1002/elan.201100599
Publication status	Published - 1 Mar 2012

Keywords

DTSP
Gold nanoparticles
Selective desorption
Self-assembled monolayers
Ultramicroelectrode arrays

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title = "Electrochemical Performance of Self-Assembled Monolayer Gold Nanoparticle-Modified Ultramicroelectrode Array Architectures",

abstract = "Surface architectures based on gold nanoparticles (AuNPs) electrodeposited on gold ultramicroelectrode arrays (UMEAs) and further modified with self-assembled monolayers (SAMs) of two different thiol molecules were evaluated. The voltammetric behavior of the resulting electrochemical transducer approaches appeared to be fairly different compared to that of SAM-modified UMEAs and microelectrode counterparts. Such behavior indicates that the electrodeposited AuNPs played a key role in the arrangement of the thiolated probes and the electron transfer processes at the transducer solution interface. A detailed description of this phenomenon was carried out with the aim of showing the potential of the presented SAM-AuNP-UMEA based transducer to develop robust biosensor approaches. {\textcopyright} 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.",

keywords = "DTSP, Gold nanoparticles, Selective desorption, Self-assembled monolayers, Ultramicroelectrode arrays",

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T1 - Electrochemical Performance of Self-Assembled Monolayer Gold Nanoparticle-Modified Ultramicroelectrode Array Architectures

AU - Orozco, Jahir

AU - Jiménez-Jorquera, Cecilia

AU - Fernández-Sánchez, César

PY - 2012/3/1

Y1 - 2012/3/1

N2 - Surface architectures based on gold nanoparticles (AuNPs) electrodeposited on gold ultramicroelectrode arrays (UMEAs) and further modified with self-assembled monolayers (SAMs) of two different thiol molecules were evaluated. The voltammetric behavior of the resulting electrochemical transducer approaches appeared to be fairly different compared to that of SAM-modified UMEAs and microelectrode counterparts. Such behavior indicates that the electrodeposited AuNPs played a key role in the arrangement of the thiolated probes and the electron transfer processes at the transducer solution interface. A detailed description of this phenomenon was carried out with the aim of showing the potential of the presented SAM-AuNP-UMEA based transducer to develop robust biosensor approaches. © 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

AB - Surface architectures based on gold nanoparticles (AuNPs) electrodeposited on gold ultramicroelectrode arrays (UMEAs) and further modified with self-assembled monolayers (SAMs) of two different thiol molecules were evaluated. The voltammetric behavior of the resulting electrochemical transducer approaches appeared to be fairly different compared to that of SAM-modified UMEAs and microelectrode counterparts. Such behavior indicates that the electrodeposited AuNPs played a key role in the arrangement of the thiolated probes and the electron transfer processes at the transducer solution interface. A detailed description of this phenomenon was carried out with the aim of showing the potential of the presented SAM-AuNP-UMEA based transducer to develop robust biosensor approaches. © 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

KW - DTSP

KW - Gold nanoparticles

KW - Selective desorption

KW - Self-assembled monolayers

KW - Ultramicroelectrode arrays

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DO - 10.1002/elan.201100599

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