Covalently Bridging Gaps in Single-Walled Carbon Nanotubes with Conducting Molecules
Top Cited Papers
- 20 January 2006
- journal article
- other
- Published by American Association for the Advancement of Science (AAAS) in Science
- Vol. 311 (5759), 356-359
- https://doi.org/10.1126/science.1120986
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-walled 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.Keywords
This publication has 29 references indexed in Scilit:
- Interface Geometry and Molecular Junction Conductance: Geometric Fluctuation and Stochastic SwitchingNano Letters, 2005
- Statistical Analysis of Single‐Molecule JunctionsAngewandte Chemie-International Edition, 2004
- Single- and Multigrain Nanojunctions with a Self-Assembled Monolayer of Conjugated MoleculesPhysical Review Letters, 2004
- Electric Current through a Molecular Rod—Relevance of the Position of the Anchor GroupsAngewandte Chemie-International Edition, 2003
- Comparison of Electronic Transport Measurements on Organic MoleculesAdvanced Materials, 2003
- A Bond-Fluctuation Mechanism for Stochastic Switching in Wired MoleculesScience, 2003
- Coulomb blockade and the Kondo effect in single-atom transistorsNature, 2002
- Reproducible Measurement of Single-Molecule ConductivityScience, 2001
- Large On-Off Ratios and Negative Differential Resistance in a Molecular Electronic DeviceScience, 1999
- Conductance of a Molecular JunctionScience, 1997