Copper oxide integrated perylene diimide self-assembled graphitic pencil for robust non-enzymatic dopamine detection.

ABSTRACT: Exploring a robust, extremely sensitive, cost-effective and reliable assay platform for the precise analysis of dopamine (DA) has become a big challenge predominantly at the clinical level. To participate in this quest, herein, we fabricated a perylene diimide (PDI) self-assembled graphitic surface of the graphitic pencil electrode (GPE) anchored copper oxide (CuO). The self-assembled N-rich PDI led to the fast movement of ions by decreasing the bandgap and improved the electron transport kinetics with more exposed catalytic active sites, thus resulting in the robust electrochemical sensing of DA. The designed sensor exhibited good sensitivity (4 μM^-1 cm^-2), high structural stability, repeatability and excellent reproducibility with an RSD value of 2.9%. Moreover, the

SUBMITTER: Amara U 

PROVIDER: S-EPMC9036951 | biostudies-literature | 2021 Jul

REPOSITORIES: biostudies-literature