Intercalation and Post-synthesis Oxidation of Basic Electroactive TTF-type Molecules in Zirconium Phosphate

Abstract

Bis(amino)-functionalised tetrathiafulvalenes 4a and 4b intercalate easily into γ-zirconium phosphate to give phases in which the interlayer distance is expanded to ca. 25 Å from 12.2 Å in the host material. As-prepared compounds are poorly conducting, but the electrical properties can be improved by a factor 103 by in situ oxidation of the TTF core. The conductivity depends strongly both on the amount of TTF taken up, and on its partial charge. Compounds have been characterised using electron paramagnetic resonance, infrared and Raman spectroscopies.