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Comparative Study of the Binding of Concanavalin A to Self-Assembled Monolayers Containing a Thiolated α-Mannoside on Flat Gold and on Nanoporous Gold

Published on May 1, 2012in Journal of Carbohydrate Chemistry0.83
· DOI :10.1080/07328303.2012.683909
Binod Pandey7
Estimated H-index: 7
(UMSL: University of Missouri–St. Louis),
Yih Horng Tan11
Estimated H-index: 11
(UMSL: University of Missouri–St. Louis)
+ 2 AuthorsKeith J. Stine21
Estimated H-index: 21
(UMSL: University of Missouri–St. Louis)
Abstract
We have prepared SAMs containing 8-mercaptooctyl α-D-mannopyranoside either as a single component or in mixed SAMs with n-octanethiol on flat gold surfaces and on nanoporous gold. Electrochemical impedance spectroscopy showed that the mixed SAMs on flat gold surfaces showed the highest Con A binding, near 1:9 solution molar ratio of thiolated α-mannoside to n-octanethiol, whereas those on NPG showed the highest response at 1:19 solution molar ratio of thiolated α-mannoside to n-octanethiol. Atomic force microscopy was employed to image the monolayers and to image the bound Con A protein. Supplemental materials are available for this article. Go to the publisher's online edition of Journal of Carbohydrate Chemistry to view the free supplemental file.
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