The EPR properties of a novel triradical obtained by single-electron oxidation of a nitroxide-spin-labelled rotaxane containing a tetrathiafulvalene unit and cyclobis- (paraquat-p-phenylene) ring is reported. Rotaxanation is proved to have a dramatic effect on through-space magnetic interactions between radical fragments. Analysis of the EPR spectra by a three-jump model, allowed us to obtain structural information on the interlocked structure.
Francesco Romano, Roberta Manoni, Paola Franchi, Elisabetta Mezzina, Marco Lucarini (2015). Supramolecular Control of Spin Exchange in a Spin-Labelled [2]Rotaxane Incorporating a Tetrathiafulvalene Unit. CHEMISTRY-A EUROPEAN JOURNAL, 21(7), 2775-2779 [10.1002/chem.201406301].
Supramolecular Control of Spin Exchange in a Spin-Labelled [2]Rotaxane Incorporating a Tetrathiafulvalene Unit
ROMANO, FRANCESCO;MANONI, ROBERTA;FRANCHI, PAOLA;MEZZINA, ELISABETTA;LUCARINI, MARCO
2015
Abstract
The EPR properties of a novel triradical obtained by single-electron oxidation of a nitroxide-spin-labelled rotaxane containing a tetrathiafulvalene unit and cyclobis- (paraquat-p-phenylene) ring is reported. Rotaxanation is proved to have a dramatic effect on through-space magnetic interactions between radical fragments. Analysis of the EPR spectra by a three-jump model, allowed us to obtain structural information on the interlocked structure.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
