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Plasma functionalized surface of commodity polymers for dopamine detection
- Source :
- Recercat. Dipósit de la Recerca de Catalunya, instname, UPCommons. Portal del coneixement obert de la UPC, Universitat Politècnica de Catalunya (UPC)
- Publication Year :
- 2017
- Publisher :
- Elsevier BV, 2017.
-
Abstract
- We have fabricated potentially generalizable sensors based on polymeric-modified electrodes for the electrochemical detection of dopamine. Sensitive and selective sensors have been successfully obtained by applying a cold-plasma treatment during 1–2 min not only to conducting polymers but also to electrochemically inert polymers, such as polyethylene, polypropylene, polyvinylpyrrolidone, polycaprolactone and polystyrene. The effects of the plasma in the electrode surface activation, which is an essential requirement for the dopamine detection when inert polymers are used, have been investigated using X-ray photoelectron spectroscopy. Results indicate that exposure of polymer-modified electrodes to cold-plasma produces the formation of a large variety of reactive species adsorbed on the electrode surface, which catalyse the dopamine oxidation. With this technology, which is based on the application of a very simple physical functionalization, we have defined a paradox-based paradigm for the fabrication of electrochemical sensors by using inert and cheap plastics.
- Subjects :
- Biopolímers
Materials science
Surface activation
Dopamine
Conducting polymers
General Physics and Astronomy
Nanotechnology
02 engineering and technology
010402 general chemistry
01 natural sciences
chemistry.chemical_compound
Enginyeria química [Àrees temàtiques de la UPC]
Biopolymers
Polímers conductors
Inert
chemistry.chemical_classification
Conductive polymer
Conducting polymer
Surfaces and Interfaces
General Chemistry
Polymer
021001 nanoscience & nanotechnology
Condensed Matter Physics
Polythiophene
0104 chemical sciences
Surfaces, Coatings and Films
chemistry
Polyethylene
Polycaprolactone
Electrode
Plasma discharge
Surface modification
Enginyeria biomèdica
Polystyrene
0210 nano-technology
Biomedical engineering
Subjects
Details
- ISSN :
- 01694332
- Volume :
- 399
- Database :
- OpenAIRE
- Journal :
- Applied Surface Science
- Accession number :
- edsair.doi.dedup.....0176889b503233912868055d293a2cdf