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Effects of hydration on molecular junction transport
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Long, David P., Lazorcik, Jason L., Mantooth, Brent A., Moore, Martin H., Ratner, Mark A., Troisi, Alessandro, Yao, Yuxing, Ciszek, Jacob W., Tour, James M. and Shashidhar, Ranganathan (2006) Effects of hydration on molecular junction transport. Nature, 5 (11). pp. 901-908. doi:10.1038/nmat1754 ISSN 1476-1122.
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Official URL: http://dx.doi.org/10.1038/nmat1754
Abstract
The study of charge transport through increasingly complex small molecules will benefit from a detailed understanding of how contaminants from the environment affect molecular conduction. This should provide a clearer picture of the electronic characteristics of molecules by eliminating interference from adsorbed species. Here we use magnetically assembled microsphere junctions incorporating thiol monolayers to provide insight into changing electron transport characteristics resulting from exposure to air. Using this technique, current-voltage analysis and inelastic electron tunnelling spectroscopy (IETS) demonstrate that the primary interaction affecting molecular conduction is rapid hydration at the gold-sulphur contacts. We use IETS to present evidence for changing mechanisms of charge transport as a result of this interaction. The detrimental effects on molecular conduction discussed here are important for understanding electron transport through gold-thiol molecular junctions once exposed to atmospheric conditions.
Item Type: | Journal Article | ||||
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Subjects: | Q Science > QD Chemistry T Technology > TA Engineering (General). Civil engineering (General) Q Science > QC Physics |
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Journal or Publication Title: | Nature | ||||
Publisher: | NATURE PUBLISHING GROUP | ||||
ISSN: | 1476-1122 | ||||
Official Date: | November 2006 | ||||
Dates: |
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Volume: | 5 | ||||
Number: | 11 | ||||
Number of Pages: | 8 | ||||
Page Range: | pp. 901-908 | ||||
DOI: | 10.1038/nmat1754 | ||||
Publication Status: | Published |
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