Exercising substituents in porphyrins for real time selective sensing of volatile organic compounds

Abstract Herein, field effect transistors have been demonstrated for selective detection of organic vapours through strategic design of porphyrin wrapped single walled carbon nanotubes (SWNTs) as sensor channels. The high performance sensors exhibited significant selectivity among aliphatic and aromatic vapours at concentration down to 1 ppm with rapid response/recovery signature under real-time measurements.