Flexible sensor with electrophoretic polymerized graphene oxide/PEDOT:PSS composite for voltammetric determination of dopamine concentration

© 2021. The Author(s)..

We demonstrate a novel, flexible sensor with graphene oxide/PEDOT:PSS (GO/PEDOT:PSS) composite for voltammetric determination of selective low levels of dopamine. The well-distributed GO and EDOT:PSS suspension in water were deposited simply and polymerized. Consequently, the EDOT:PSS provided a strong interaction between GO and PEDOT:PSS, and it also had well-tailored interfacial properties that allowed the highly selective and sensitive determination of DA. Since the interfacial net charge is well-constructed, the sensor satisfies both the requirements of selectivity and the highly sensitive detection of low amounts of DA. In the results, the sensor with the GO/PEDOT:PSS composite exhibited a low interfacial impedance of about 281.46 ± 30.95 Ω at 100 Hz and a high charge storage capacity (53.94 ± 1.08 µC/cm2) for the detection of dopamine. In addition, the interference from ascorbic acid was reduced effectively to a minimum by electrostatic charge repelling of the AA and the distinct difference for the oxidation peak of the UA. Due to the fact that the GO/PEDOT:PSS composite had a net negative charge and, enhanced interfacial properties, the sensor showed a dopamine detection limit of 0.008 μM and a sensitivity of 69.3 µA/µMcm2.

Medienart:

E-Artikel

Erscheinungsjahr:

2021

Erschienen:

2021

Enthalten in:

Zur Gesamtaufnahme - volume:11

Enthalten in:

Scientific reports - 11(2021), 1 vom: 26. Okt., Seite 21101

Sprache:

Englisch

Beteiligte Personen:

Ko, Seung Hyeon [VerfasserIn]
Kim, Seung Wook [VerfasserIn]
Lee, Yi Jae [VerfasserIn]

Links:

Volltext

Themen:

7782-42-5
Dopamine
Graphene oxide
Graphite
Journal Article
Poly(3,4-ethylenedioxythiophene)-poly(styrenesulfonate)
Polystyrenes
Research Support, Non-U.S. Gov't
Thiophenes
VTD58H1Z2X

Anmerkungen:

Date Completed 26.01.2022

Date Revised 26.01.2022

published: Electronic

Citation Status MEDLINE

doi:

10.1038/s41598-021-00712-w

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM332413578