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Reference type: Journal
Authors: Liu K, Wei WZ, Zeng JX, Liu XY, Gao YP
Article Title: Application of a novel electrosynthesized polydopamine-imprinted film to the capacitive sensing of nicotine.
Publication date: 2006
Journal: Analytical and Bioanalytical Chemistry
Volume: 385
Issue: (4)
Page numbers: 724-729.
DOI: 10.1007/s00216-006-0489-z

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 μmol L-1, with a detection limit of 0.5 μmol L-1. The proposed molecularly imprinted polymer capacitive (MIPC) sensor exhibited good selectivity for nicotine. The reproducibility and repeatability of the MIPC senor were all found to be satisfactory. The results from sample analysis confirmed the applicability of the MIPC sensor to quantitative analysis
Template and target information: nicotine
Author keywords: dopamine, molecularly imprinted polymer, electropolymerization, capacitive sensing, nicotine

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