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Reference type: Journal
Authors: Nikitina VN, Zaryanov NV, Kochetkov IR, Karyakina EE, Yatsimirsky AK, Karyakin AA
Article Title: Molecular imprinting of boronate functionalized polyaniline for enzyme-free selective detection of saccharides and hydroxy acids.
Publication date: 2017
Journal: Sensors and Actuators B: Chemical
Volume: 246
Page numbers: 428-433.
DOI: 10.1016/j.snb.2017.02.073
Alternative URL: http://www.sciencedirect.com/science/article/pii/S0925400517303003

Abstract: The majority of reagentless affinity sensors suffer from poor selectivity because specific binding and non-specific interactions generate responses in the same direction, commonly causing resistance increase. We report on the advanced transducer, synthesized in course of molecular imprinting, which generates conductivity increase as a result of specific binding. Electropolymerization of 3-aminophenylboronic acid (3-APBA) known to yield conductive polyaniline only in the presence of F-, has been carried substituted the latter for hydroxy acids. The achieved synthesis of conductive polymer in course of fluoride-free 3-APBA electropolymerization indicates successful imprinting of hydroxy acids. Imprinting poly(3-APBA) provides as 10-15 times increased, as even decreased binding constants towards target analytes as compared to the non-imprinted polymer. This allows one to achieve the desired selectivity among polyols. Tuning binding properties of boronate functionalized polyaniline we have demonstrated the enzyme-free selective detection of saccharides and hydroxy acids via conductivity increase of the conductive polymer
Template and target information: fluoride ion, F-, hydroxy acids, saccharides
Author keywords: Boronate functionalized polyaniline, Conductive polymer, electropolymerization, molecular imprinting, Hydroxy acids, Impedance


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