Novel clicked tetrathiafulvalene-calix[4]arene assemblies: Synthesis and intermolecular electron transfer toward p-chloranil

Two tetrathiafulvalene-calix[4]arene assemblies (TTF-calix-1 and TTF-calix-2) have been synthesized by the click reaction. Both their cyclic voltammograms show, as expected, two one-electron quasi-reversible redox behavior. The UV–vis absorption spectra studies show that these two assemblies undergo progressive oxidation at the TTF moiety in presence of increasing amounts of Cu2+ or Hg2+. Moreover, the absorption studies show intermolecular electron transfer between compounds TTF-calix-1 or TTF-calix-2 and p-chloranil may be promoted by specific metal ions such as Pb2+, Sc3+etc.

Graphical abstractTwo tetrathiafulvalene-calix[4]arene (TTF-calix) assemblies have been synthesized by the click reaction. The absorption studies show intermolecular electron transfer between TTF units and p-chloranil may be promoted by specific metal ions such as Pb2+, Sc3+etc.Figure optionsDownload full-size imageDownload as PowerPoint slide