Fig. 5. Example of the responses of pristine and functionalized SWCNTs at different humidity (RH%) conditions to exposures of 40 ppm of NH3 and TMA in (a) N2 at RH of 72% and (b) in air at RH < 5%; percentages of the conductance changes in N2 (<5% RH) of SWCNT-N-C6F4CO2H in response to increasing concentrations of (c) NH3 and (d) TMA. The exposure time was 100 s. A linear fit of the baseline was subtracted from the data.
