Investigation of sensor characteristics of Au and Cu modified PEDOT electrodes for dopamine

Sema Topal, Zeynep Sena Kulaksiz, Sebahat Topal, Eda Karaman, Belkis Ustamehmetoglu, Esma Sezer*

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3 Atıf (Scopus)

Özet

Hormones are important and necessary for the continuity of many vital functions in human body. Dopamine (DA) is a neurotransmitter affecting pain and pleasure perceptions, emotions, and movements. In the case of DA deficiency, severe discomforts such as Schizophrenia and Parkinsonism may happen. Thus, DA detection is an important subject. Electrochemical methods have been used in this work by developing a sensor for rapid and easy detection of DA. 3,4-Ethylenedioxythiophene (EDOT) monomer was polymerized on a platinum electrode using cyclic voltammetry method, and the film properties of the resultant polymer were investigated. Additionally, gold and copper coated PEDOT films, Pt/PEDOT/Au and Pt/PEDOT/Cu, respectively, were prepared to improve the sensitivity and stability of the films, compared to Pt/PEDOT electrode. The calibration curves were found to be linear in the concentration range of 50–1000 μM for DA in the presence of ascorbic acid (AA). The detection limits were determined as 18.46 μM, 13.33 μM and 6.80 μM for Pt/PEDOT, Pt/PEDOT/Cu and Pt/PEDOT/Au electrodes, respectively. Moreover, the electrodes demonstrated an electrochemical catalytic effect toward DA.

Orijinal dilİngilizce
Sayfa (başlangıç-bitiş)127-137
Sayfa sayısı11
DergiOrganic Communications
Hacim13
Basın numarası3
DOI'lar
Yayın durumuYayınlandı - 2020

Bibliyografik not

Publisher Copyright:
© 2020 ACG Publication. All rights reserved

Finansman

We thank The Higher Education Council of Turkey (YOK) and TUBITAK for grants to Sebahat Topal (Ph.D., 100/2000 YOK, and TUBITAK BIDEP 2211A).

FinansörlerFinansör numarası
Higher Education Council of Turkey
TUBITAKBIDEP 2211A, 100/2000 YOK

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