This work was supported by the Department of Homeland Security and the Federal Aviation Administration under grant DHS S&T 06-G-026. R. Masel acknowledges funding from Defense Advanced Research Projects Agency (DARPA) under U.S. Air Force grant FA8650-04-1-7121. SEM was carried out in the Center for Microanalysis of Materials, University of Illinois, which is partially supported by the U.S. Department of Energy under grantDEFG02-91-ER45439.
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Communication
On-Chip Micro Gas Chromatograph Enabled by a Noncovalently Functionalized Single-Walled Carbon Nanotube Sensor Array†
Article first published online: 2 JUN 2008
DOI: 10.1002/anie.200704501
Copyright © 2008 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
Additional Information
How to Cite
Lee, C., Sharma, R., Radadia, Adarsh D., Masel, Richard I. and Strano, Michael S. (2008), On-Chip Micro Gas Chromatograph Enabled by a Noncovalently Functionalized Single-Walled Carbon Nanotube Sensor Array. Angew. Chem. Int. Ed., 47: 5018–5021. doi: 10.1002/anie.200704501
- †
Publication History
- Issue published online: 16 JUN 2008
- Article first published online: 2 JUN 2008
- Manuscript Revised: 13 MAR 2008
- Manuscript Received: 30 SEP 2007
Funded by
- Department of Homeland Security
- Federal Aviation Administration. Grant Number: DHS S&T 06-G-026
- Defense Advanced Research Projects Agency (DARPA). Grant Number: FA8650-04-1-7121
- U.S. Department of Energy. Grant Number: DEFG02-91-ER45439
Keywords:
- adsorption;
- gas chromatography;
- nanotubes;
- polymers;
- sensors
Sensing in reverse: Reversible detection of as few as 109 molecules (1700 aM) of dimethyl methylphosphonate, a nerve agent simulant, is demonstrated at the end of a micro GC column (see picture). Such arrays form the basis of rapidly transducing molecular sensors with micrometer-sized footprints. The separation capability of the column eliminates the need for selectivity on the sensor, as long as analyte binding is reversible and rapid.