Disposable miniaturized screen-printed pH and reference electrodes for potentiometric systems.


AU: 
Musa, E; del Campo, FJ; Abramova, N; Alonso-Lomillo, MA; Domínguez-Renedo, O; Arcos-Martínez, MJ; Brivio, M; Snakenborg, D; Geschke, O; Kutter, JP
SO: 
ELECTROANALYSIS
VL: 
23
IS: 
1
BP: 
115
EP: 
121
PY: 
2011
SN: 
1521-4109
Impact: 
2.72
Year IF: 
2010
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.

DT: 
Article en revistes indexades
Percentil: 
HIGH
Percentil Year: 
2010
Category: 
ELECTROANALYSIS
KW: 
Screen-printed-electrode (SPE); Potentiometry; pH-electrode