Ultrasensitive and Highly Selective Electrochemical Detection of Dopamine Using Poly(ionic liquids)-Cobalt Polyoxometalate/CNT Composite.

ABSTRACT: A novel sandwich polyoxometalate (POM) Na₁₂[WCo₃(H₂O)₂(CoW₉O₃₄)₂] and poly(vinylimidazolium) cation [PVIM⁺] in combination with nitrogen-doped carbon nanotubes (NCNTs) was developed for a highly selective and ultrasensitive detection of dopamine. Conductively efficient heterogenization of Co₅POM catalyst by PVIM over NCNTs provides the synergy between PVIM-POM catalyst and NCNTs as a conductive support which enhances the electron transport at the electrode/electrolyte interface and eliminates the interference of ascorbic acid (AA) at physiological pH (7.4). The novel PVIM-Co₅POM/NCNT composite demonstrates a superior selectivity and sensitivity with a lowest detection limit of 500

SUBMITTER: Thakur N 

PROVIDER: S-EPMC6045466 | biostudies-literature | 2018 Mar

REPOSITORIES: biostudies-literature