Application of a novel electrosynthesized polydopamine-imprinted film to the capacitive sensing of nicotine

Abstract

The application of novel electrosynthesized polydopamine (PDA)-imprinted film as a recognition element for the capacitive sensing of nicotine is reported. The PDA-imprinted film was electropolymerized directly on the gold electrode surface in the presence of nicotine without an additional self-assembled thiol sublayer. The compact PDA film has various functional groups that aid the imprinting procedure. Furthermore, the film shows good capacitive response since it is insulating in nature and ultrathin. The sensor's linear response range for nicotine was between 1-25 micromol L(-1), with a detection limit of 0.5 micromol L(-1). The proposed molecularly imprinted polymer capacitive (MIPC) sensor exhibited good selectivity for nicotine. The reproducibility and repeatability of the MIPC sensor were all found to be satisfactory. The results from sample analysis confirmed the applicability of the MIPC sensor to quantitative analysis.

Deposition Mechanism and Properties of Thin Polydopamine Films for High Added Value Applications in Surface Science at the Nanoscale

“…However, silver is leached in the bacterial suspension and a second reduction step of Ag + cations in Ag is not possible [83,99] Membranes for separations and fuel cells Modification of a polysulfone membrane to make it permselective [78] The permselectivity of polydopamine is pH dependent and also depends on the synthesis method [79,80] Improvement of methanol barrier in fuel cells [102] Films for sensing Highly selective sensing of an analyte can be obtained by imprinting the molecule of interest in the polydopamine film during its formation [104][105][106] Coating of particles for the production of hollow capsules…”

“…Very interesting was the finding that preoxidized dopamine, due to the presence of potassium ferricyanide in solution, allowed for more efficient immobilization of the enzyme [105]. Nicotine was also imprinted in polydopamine films deposited by electropolymerization in order to produce capacitive sensors specific for nicotine [106].…”

Highly effective photothermal chemotherapy with pH-responsive polymer-coated drug-loaded melanin-like nanoparticles

“…5 PDA-based materials were biomedically applied to biosensing, bioimaging, drug delivery, tissue engineering, theranostics, and cancer photothermal treatment. [6][7][8][9][10][11][12] Many materials such as carbon nanotubes, graphene oxide (GO) sheets, gold nanorods, and conjugated polymeric nanomaterials all exhibit considerable photothermal conversion effects. [13][14][15][16][17] However, carbon nanotubes and GO sheets have low degradability in vivo, whereas gold nanorods face the drawbacks of toxicity and high cost.…”

Dopamine-Imprinted Polymers: Template-Monomer Interactions, Analysis of Template Removal and Application to Solid Phase Extraction

“…They are very useful materials for isolation and preconcentration of low concentration analytes employing the solid phase extraction (SPE) technique [14][15][16]. Although many papers have been published concerning utilization of MIPs in pharmaceutical science [17][18][19], only a few were devoted to dopamine isolation [20][21][22][23][24]. Recently, two scientific groups have published their results of the evaluation of dopamine imprinted polymers prepared using synthetic methods based on covalent [22] and non-covalent [23] approaches.…”