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Purification of ethanol for highly sensitive self-assembly experiments.

ABSTRACT: Ethanol is the preferred solvent for the formation of self-assembled monolayers (SAMs) of thiolates on gold. By applying a thin film sensor system, we could demonstrate that even the best commercial qualities of ethanol contain surface-active contaminants, which can compete with the desired thiolates for surface sites. Here we present that gold nanoparticles deposited onto zeolite X can be used to remove these contaminants by chemisorption. This nanoparticle-impregnated zeolite does not only show high capacities for surface-active contaminants, such as thiols, but can be fully regenerated via a simple pyrolysis protocol.

SUBMITTER: Barbe K

PROVIDER: S-EPMC4142897 | biostudies-literature | 2014

REPOSITORIES: biostudies-literature

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Purification of ethanol for highly sensitive self-assembly experiments.

Barbe Kathrin K Kind Martin M Pfeiffer Christian C Terfort Andreas A

Beilstein journal of nanotechnology 20140812

Ethanol is the preferred solvent for the formation of self-assembled monolayers (SAMs) of thiolates on gold. By applying a thin film sensor system, we could demonstrate that even the best commercial qualities of ethanol contain surface-active contaminants, which can compete with the desired thiolates for surface sites. Here we present that gold nanoparticles deposited onto zeolite X can be used to remove these contaminants by chemisorption. This nanoparticle-impregnated zeolite does not only sho ...[more]

PMID: 25161861

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