Concurrent and Selective Determination of Dopamine and Serotonin with Flexible WS2/Graphene/Polyimide Electrode Using Cold Plasma
SCIE
SCOPUS
- Title
- Concurrent and Selective Determination of Dopamine and Serotonin with Flexible WS2/Graphene/Polyimide Electrode Using Cold Plasma
- Authors
- Kim, Hyeong‐U; Koyappayil, Aneesh; Seok, Hyunho; Aydin, Kubra; Kim, Changmin; Park, Kyu‐Young; Jeon, Nari; Kang, Woo Seok; Lee, Min‐Ho; Kim, Taesung
- Date Issued
- 2021-11
- Publisher
- Wiley - V C H Verlag GmbbH & Co.
- Abstract
- Makers of point-of-care devices and wearable diagnostics prefer flexible electrodes over conventional electrodes. In this study, a flexible electrode platform is introduced with a WS2/graphene heterostructure on polyimide (WGP) for the concurrent and selective determination of dopamine and serotonin. The WGP is fabricated directly via plasma-enhanced chemical vapor deposition (PECVD) at 150 degrees C on a flexible polyimide substrate. Owing to the limitations of existing fabrication methods from physical transfer or hydrothermal methods, many studies are not conducted despite excellent graphene-based heterostructures. The PECVD synthesis method can provide an innovative WS2/graphene heterostructure of uniform quality and sufficient size (4 in.). This unique heterostructure affords excellent electrical conductivity in graphene and numerous electrochemically active sites in WS2. A large number of uniform qualities of WGP electrodes show reproducible and highly sensitive electrochemical results. The synergistic effect enabled well-separated voltammetric signals for dopamine and serotonin with a potential gap of 188 mV. Moreover, the practical application of the flexible sensor is successfully evaluated by using artificial cerebrospinal fluid.
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/107710
- DOI
- 10.1002/smll.202102757
- ISSN
- 1613-6810
- Article Type
- Article
- Citation
- Small, vol. 17, no. 45, page. 2102757, 2021-11
- Files in This Item:
- There are no files associated with this item.
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.