Reversible charge transfer complexes between molecular oxygen and poly(3-alkylthiophene)s


  • Financial support of this work by the Natural Sciences and Engineering Research Council of Canada is gratefully acknowledged.


The interaction of poly(3-hexylthiophene), P3HT, with oxygen has been investigated. Evidencein the form of UV–vis absorption, electron paramagnetic resonance data, and a field effect conductivity analysis of a polymer-based field effect transistor–is presented for the existence of a reversible charge transfer complex between P3HT and oxygen. Oxygen-sensor applications can be foreseen for thin film transistors incorporating P3HT.