Journal
BIOELECTROCHEMISTRY
Volume 63, Issue 1-2, Pages 285-289Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.bioelechem.2003.10.026
Keywords
hexadecanethiol; dendrimers; glucose oxidase; cyclic voltammetry; scanning electrochemical microscopy
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We studied the properties of mixed alkanethiol-dendrimer layers on a gold support and their application in biosensing. We showed that properties of glucose sensor can be modified using a different ratio of 1-hexadecanethiol (HDT) and poly(amidoamine) dendrimer of first generation (G1). The cyclic voltammetry in the presence of the redox couple, Fe(CN)(6)(3-)/Fe(CN)(6)(4-), was used for estimating how effectively the layer blocks the redox probe's access to the electrode surface. A scanning electrochemical microscope (SECM) was used to image the resulting distribution of the organic compounds. We found that with increasing content of dendrimers, the integrity of the layers was improved. (C) 2004 Elsevier B.V. All rights reserved.
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