Carbon nanotubes are recognized to enable the investigation of one-dimensional thermoelectric transport and its application in flexible thermoelectric generators. Thermoelectric properties are in common evaluated using a dimensionless figure of merit zT = σα²T/κ, where σ is the electrical conductivity, α is the Seebeck coefficient, κ is the thermal conductivity, and T is the absolute temperature. Since σ, and α rely sensitively on carrier concentration, the development of a rational doping method is required for the investigation of carbon nanotubes’ thermoelectric properties. Additionally, it is empirically recognized that doped carbon nanotubes degrade rapidly in air.In this talk, the doping [i.e. n-type conversion] of carbon nanotubes and their stabilization are discussed in terms of supramolecular binding interactions. Power supply with an air-stable, nanotube-based thermoelectric generator is demonstrated.