2019/10/08 by Heeju Kim, Gunn Kim · 25 citations
Chemistry · Engineering · Materials Science · Neuroscience · Physics and Astronomy · #Adsorption #Biology #Carbon Nanotubes in Composites #Carbon nanotube #Chemistry #Conducting polymers and applications #Dopamine #Dopaminergic #Electrochemical sensors and biosensors #Materials science #Nanotechnology #Neuroscience #Organic chemistry #Physical chemistry #Quinone #cond-mat.mes-hall #physics.app-ph
paper · pdf · doi:10.1016/j.apsusc.2019.144249
published in Applied Surface Science 501, 144249 (Elsevier BV) · 13 pages, 5 figures
openalex publication_date 2019/10/08 · arxiv created 2020/01/31 · arxiv updated 2020/02/03 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
Detecting dopamine is of great biological importance because the molecule plays many roles in the human body. For instance, the lack of dopamine release is the cause of Parkinson's disease. Although many researchers have carried out experiments on dopamine detection using carbon nanotubes (CNTs), there are only a few theoretical studies on this topic. We study the adsorption properties of dopamine and its derivatives, L-DOPA and dopamine o-quinone, adsorbed on a semiconducting (10, 0) CNT, using density functional theory calculations. Our computational simulations reveal that localized states originating from dopamine o-quinone appear in the bandgap of the (10, 0) CNT, but those originating from dopamine and L-DOPA do not appear in the gap. Therefore, dopamine o-quinone is expected to be detectable using an external electric field but dopamine and L-DOPA should be difficult to detect.