Chemical Sensing with Polyaniline Coated Single-Walled Carbon Nanotubes

A positive synergy: Single-walled carbon nanotube/polyaniline (SWNT/PAni) nano-composite with controlled core/shell morphology is synthesized by a noncovalent functionalization approach. Unique electron interactions between the SWNT core and the PAni shell are studied electrochemically and spectroscopically, and superior sensor performance to chemical gases and vapors is demonstrated.