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Keywords:

  • Supramolecular chemistry;
  • Host–guest chemistry;
  • Macrocycles;
  • Nitroxides;
  • EPR spectroscopy

Abstract

The synthesis and characterization of a new member of the pillar[5]arene family carrying a paramagnetic side-arm based on the 2,2,6,6-tetramethylpiperidine N-oxide (TEMPO) moiety has been achieved by the Huisgen-type CuAAC reaction. The possibility of exploiting the proposed pillar[5]arene as a host in paramagnetic rotaxane-like structures was tested in the presence of charged guests and confirmed by NMR spectroscopy.