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Covalently bridging gaps in single-walled carbon nanotubes with conducting molecules

Cited 377 time in Web of Science Cited 378 time in Scopus
Authors
Guo, XF; Small, JP; Klare, JE; Wang, YL; Purewal, MS; Tam, IW; Hong, Byung Hee; Caldwell, R; Huang, LM; O'Brien, S; Yan, JM; Breslow, R; Wind, SJ; Hone, J; Kim, P; Nuckolls, C
Issue Date
2006-01
Citation
Science, Vol.311 No.5759, pp.356-359
Abstract
Molecular electronics is often limited by the poorly defined nature of the contact between the molecules and the metal surface. We describe a method to wire molecules into gaps in single-waited carbon nanotubes (SWNTs). Precise oxidative cutting of a SWNT produces carboxylic acid-terminated electrodes separated by gaps of <= 10 nanometers. These point contacts react with molecules derivatized with amines to form molecular bridges held in place by amide linkages. These chemical contacts are robust and allow a wide variety of molecules to be tested electrically. In addition to testing molecular wires, we show how to install functionality in the molecular backbone that allows the conductance of the single-molecule bridges to switch with pH.
ISSN
0036-8075
URI
https://hdl.handle.net/10371/172272
DOI
https://doi.org/10.1126/science.1120986
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College of Natural Sciences (자연과학대학)Dept. of Chemistry (화학부)Journal Papers (저널논문_화학부)
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