Self-reporting molecularly imprinted polymer with the covalently immobilized ferrocene redox probe for selective electrochemical sensing of p-synephrine

Simultaneously, the p-synephrine 1 template was imprinted, and a ferrocene redox probe covalently immobilized in (bis-bithiophene)-based polymer, resulting molecularly imprinted polymer (MIP) deposited on Pt electrode as thin film to form self-reporting MIP film-based chemosensor. After subsequent extraction from film, analyte determined with differential pulse voltammetry (DPV) (redox probe)-free solution. That possible because internal generated DPV analytical signal. The thickness morphology of were crucial for sensor's performance. mechanism examined electrochemical techniques, simultaneous piezomicrogravimetry electrochemistry at an quartz crystal microbalance, surface plasmon resonance spectroscopy. chemosensor applied selective determination concentration range 2.0–75 nM LOD 0.57 S/N = 3.