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Laccase‐containing ureasil–polymer composite as the sensing layer of an amperometric biosensor
Author(s) -
Kavetskyy Taras,
Smutok Oleh,
Gonchar Mykhailo,
Demkiv Olha,
Klepach Halyna,
Kukhazh Yuliia,
Šauša Ondrej,
Petkova Tamara,
Boev Victor,
Ilcheva Vania,
Petkov Plamen,
Stepanov Andrey L.
Publication year - 2017
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.45278
Subject(s) - biosensor , materials science , amperometry , composite number , chalcogenide , nanotechnology , polymer , chemical engineering , nanocomposite , nuclear chemistry , electrode , composite material , electrochemistry , chemistry , optoelectronics , engineering
Innovative amperometric biosensors for monitoring the level of wastewater pollution have been constructed on the surface of the gold planar electrodes C220AT “DropSens” by using the organic–inorganic ureasil‐based composites as host matrixes and immobilized commercial laccase from Trametes versicolor . It was found that the biosensor based on the ureasil–chalcogenide glass composite is characterized by a very high sensitivity (67,540 А M −1 m −2 ) that is 38.3 times higher than for pure ureasil (the sensitivity of the bioelectrode was calculated as 1762 А M −1 m −2 ). On the other hand, application of the ureasil–chalcogenide glass composite with incorporated silver nanoparticles (NPs) synthesized by high‐dose (1.0 × 10 17 Ag + /cm 2 ) 30 keV Ag + ion implantation results in decreasing the biosensor sensitivity up to 2390 times (the sensitivity of the bioelectrode was 28.3 А M −1 m −2 ). The role of additives (chalcogenide glass and silver NPs) in the ureasil matrix on the biofunctionality of the biosensors produced is considered. © 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2017 , 134 , 45278.