Probing Electrostatic Potentials in Solution with Carbon Nanotube Transistors
- 3 June 2006
- journal article
- Published by American Chemical Society (ACS) in Nano Letters
- Vol. 6 (7), 1329-1333
- https://doi.org/10.1021/nl060156i
Abstract
We have used single-walled carbon nanotube transistors to measure changes in the chemical potential of a solution due to redox-active transition-metal complexes. The interaction of the molecules with a gold electrolyte-gate wire changes the electrostatic potential sensed by the nanotube, which in turn shifts the gate-voltage dependence of the nanotube conductance. As predicted by the Nernst equation, this shift depends logarithmically on the ratio of oxidized to reduced molecules.Keywords
This publication has 12 references indexed in Scilit:
- Effects of Ionic Surfactant Adsorption on Single-Walled Carbon Nanotube Thin Film Devices in Aqueous SolutionsLangmuir, 2005
- Individual Single-Walled Carbon Nanotubes as Nanoelectrodes for ElectrochemistryNano Letters, 2004
- Growth Mechanism of Oriented Long Single Walled Carbon Nanotubes Using “Fast-Heating” Chemical Vapor Deposition ProcessNano Letters, 2004
- An Investigation of the Mechanisms of Electronic Sensing of Protein Adsorption on Carbon Nanotube DevicesJournal of the American Chemical Society, 2004
- Charge Transfer from Adsorbed ProteinsNano Letters, 2004
- Charge Transfer from Ammonia Physisorbed on NanotubesPhysical Review Letters, 2003
- In situ detection of cytochrome c adsorption with single walled carbon nanotube deviceElectronic supplementary information (ESI) available: experimental details. See http://www.rsc.org/suppdata/cc/b3/b302681g/Chemical Communications, 2003
- High Performance Electrolyte Gated Carbon Nanotube TransistorsNano Letters, 2002
- Nanotube Molecular Wires as Chemical SensorsScience, 2000
- Electrochemistry Using Single Carbon NanotubesJournal of the American Chemical Society, 1999