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

ABSTRACT: We have prepared SAMs containing 8-mercaptooctyl ?-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?-mannoside to n-octanethiol whereas those on NPG showed the highest response at 1:19 solution molar ratio of thiolated ?-mannoside to n-octanethiol. Atomic force microscopy was employed to image the monolayers, and also to image the bound Con A protein.

SUBMITTER: Pandey B 

PROVIDER: S-EPMC3601678 | biostudies-literature | 2012 Jan

REPOSITORIES: biostudies-literature

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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.

Pandey Binod B   Tan Yih Horng YH   Fujikawa Kohki K   Demchenko Alexei V AV   Stine Keith J KJ  

Journal of carbohydrate chemistry 20120101 4-6

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 thiolatedα-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  ...[more]

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