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On‐Chip Micro Gas Chromatograph Enabled by a Noncovalently Functionalized Single‐Walled Carbon Nanotube Sensor Array
Author(s) -
Lee Chang Young,
Sharma Richa,
Radadia Adarsh D.,
Masel Richard I.,
Strano Michael S.
Publication year - 2008
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.200704501
Subject(s) - carbon nanotube , analyte , column (typography) , nanotechnology , selectivity , sensor array , materials science , computer science , combinatorial chemistry , chemistry , chromatography , organic chemistry , telecommunications , frame (networking) , machine learning , catalysis
Sensing in reverse : Reversible detection of as few as 10 9 molecules (1700 a M ) 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.