Exploiting Cascade Reactions in Bienzyme Layer-by-Layer Films

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2011-10-06

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Coorientador

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Amer Chemical Soc

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Control of supramolecular architectures inherent in layer-by-layer (LbL) films allows far synergistic effects be, tween the film components, as in reactions under controlled conditions. In this paper we show that a bienzyme system can be produced in LbL films, in which the product of a reaction catalyzed by invertase (INV) is used in a catalysis process involving glucose oxidase (GOx). As a proof of principle, simultaneous detection of glucose and sucrose is demonstrated for an optimized film architecture comprising poly allyllamine hydrochloride (PAH) alternated with INV + GOx layers (PAH/(GOx + INV))(10). Though the sensitivity for sucrose is low because the product from the reaction with invertase has low electroactivity, the results confirm that cascade reactions can be performed in a controlled manner in LbL films with possible applications in sensors and bioelectrochemical devices.

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Inglês

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Journal of Physical Chemistry C. Washington: Amer Chemical Soc, v. 115, n. 39, p. 19136-19140, 2011.

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