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Controlled modification of electrochemical microsystems with polyethylenimine/reduced graphene oxide using electrophoretic deposition: Sensing of dopamine levels in meat samples
- Source :
- Talanta, Talanta, Elsevier, 2018, 178, pp.432-440. ⟨10.1016/j.talanta.2017.09.065⟩, Talanta, 2018, 178, pp.432-440. ⟨10.1016/j.talanta.2017.09.065⟩
- Publication Year :
- 2017
-
Abstract
- International audience; Microsystems play an important role in many biological and environmental applications. The integration of electrical interfaces into such miniaturized systems provides new opportunities for electrochemical sensing where high sensitivity and selectivity towards the analyte are requested. This can be only achieved upon controlled functionalization of the working electrode, a challenge for compact microsystems. In this work, we demonstrate the benefit of electrophoretic deposition (EPD) of reduced graphene oxide/polyethylenimine (rGO/ PEI) for the selective modification of a gold (Au) microelectrode in a microsystem comprising a Pt counter and a Ag/AgCl reference electrode. The functionalized microsystem was successfully applied for the sensing of dopamine with a detection limit of 50 nM. Additionally, the microsystem exhibited good performance for the detection of dopamine levels in meat samples.
- Subjects :
- Electrophoresis
Working electrode
Meat
Dopamine
Nanotechnology
02 engineering and technology
Polyethylenimine
01 natural sciences
Reference electrode
Analytical Chemistry
law.invention
[SPI.MAT]Engineering Sciences [physics]/Materials
chemistry.chemical_compound
Electrophoretic deposition
Electrochemical microsystem
law
Limit of Detection
Microsystem
Electrochemistry
Polyethyleneimine
Reduced graphene oxide
[SPI.NANO]Engineering Sciences [physics]/Micro and nanotechnologies/Microelectronics
Electrodes
[SPI.ACOU]Engineering Sciences [physics]/Acoustics [physics.class-ph]
Graphene
010401 analytical chemistry
Oxides
021001 nanoscience & nanotechnology
0104 chemical sciences
Microelectrode
chemistry
Sensing
Surface modification
Graphite
0210 nano-technology
Oxidation-Reduction
Subjects
Details
- ISSN :
- 18733573 and 00399140
- Volume :
- 178
- Database :
- OpenAIRE
- Journal :
- Talanta
- Accession number :
- edsair.doi.dedup.....0fdc9f7b4aa059985b4e664cafd7ae89