Effect of charge transfer on the device electronics
NH3 el. donor
NO2 el. acceptor
Detection of gases1
1Bradley, K.; Gabriel, J.-C. P.; Briman, M.; Star, A.; Grüner, G.
 Charge Transfer from Ammonia Physisorbed on Nanotubes,
Phys. Rev. Lett. 2003, 91, 218301.