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


AU: 
Orozco, J; Jiménez-Jorquera, C; Fernández-Sánchez, C
SO: 
Electroanalysis
Autors del GTQ: 
VL: 
24
IS: 
3
BP: 
635
EP: 
642
PY: 
2012
SN: 
1521-4109
Impact: 
2.72
Any IF: 
2010
Resum: 

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.

DT: 
Article en revistes indexades
Percentil: 
MEDIUM
Any Percentil: 
2010
Categoria: 
CHEMISTRY, ANALYTICAL
KW: 
Self-assembled monolayers; Gold nanoparticles; Ultramicroelectrode arrays; Selective desorption; DTSP