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Stable condensed monolayers of four different amphiphilic derivatives of β-cyclodextrin were formed on a water subphase. The base of the cylindrical cyclodextrin residue was found to be parallel to the water surface. Langmuir–Blodgett films were obtained for three derivatives.

X-Ray crystal analysis and magnetic measurements have been carried out on the first cation radical salt of α-nitronyl nitroxide, 2-(4-N-R-pyridinium)-4,4,5,5-tetrametyl-4,5-dihydro-1H-imidazol-1-oxyl 3-N-oxide iodide (with R = methyl (1) and ethyl), suggesting the separation between the spin and the charge density population, and revealing the strong antiferromagnetic intermolecular interaction of JAF/kB = 149 K in 1.