Premium
Electrochemical Performance of Self‐Assembled Monolayer Gold Nanoparticle‐Modified Ultramicroelectrode Array Architectures
Author(s) -
Orozco Jahir,
JiménezJorquera Cecilia,
FernándezSánchez César
Publication year - 2012
Publication title -
electroanalysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.574
H-Index - 128
eISSN - 1521-4109
pISSN - 1040-0397
DOI - 10.1002/elan.201100599
Subject(s) - ultramicroelectrode , monolayer , self assembled monolayer , nanotechnology , colloidal gold , microelectrode , electrochemistry , biosensor , transducer , materials science , nanoparticle , electrode , cyclic voltammetry , electron transfer , chemistry , organic chemistry , physics , quantum mechanics
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.