Meso-Tritolylcorrole/Single Walled Carbon Nanotubes Donor-Acceptor Heterojunction and Its Application in Ultra-Sensitive NO2 Detection

Corroles, which contain 18-π electron system and pyrrole nitrogens as electron donor atoms (N4 cores), process great ability to form an ordered donor-acceptor heterojunction (p-n junction) with electron deficient materials. In this report, meso-tritolylcorrole (TTC) will be noncovalently immobilized on SWNT networks through g-g stacking form donor-acceptor junction. The hybrid material will be characterized by optical image, UV-Vis, I-V curves, and the enhanced sensitivity toward NO2 detection will be investigated. The donor-acceptor structure of TTC/SWNTs is expected to be able to facilitate exciton dissociation and charge transfer, thus enhancing the sensitivity in gas sensing.