Journal
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
Volume 125, Issue 37, Pages 11329-11333Publisher
AMER CHEMICAL SOC
DOI: 10.1021/ja034898e
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Here, we show that residual contaminants in purified single-wall carbon nanotube bundles may be responsible for the reported sensitivity of the electronic and transport properties to oxygen. Removal of these contaminants makes the electronic spectra insensitive to O-2, CO, H2O, and N-2, while a strong sensitivity to NO2, SO2, and NH3 is observed, confirming the possible application of single-wall nanotubes as powerful sensors capable of measuring environmentally significant levels of toxic gases.
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