At room temperature Li4C60 forms a unique two-dimensional polymer network where the bonding encounters [2+2] cycloaddition along one direction and a single CC bond along the perpendicular direction. This structure thus involves both so-far known bonding motifs and is unique among fullerene structures. The structural and electronic properties of this system were investigated by temperature dependent cw-ESR. The ESR signal of the polymer phase has an extremely narrow Lorentzian line with a linewidth of about 0.3 G. On heating, the transition from the low-temperature polymer phase to a metallic monomeric phase occurs above ∼250 °C. The high-temperature ESR signal has a characteristic Dysonian lineshape. © 2005 American Institute of Physics.
Unusual two-dimensional polymer network in Li4C60 - An ESR study / Cevc, P; Arčon, D.; Pontiroli, Daniele; Ricco', Mauro. - 786:(2005), pp. 25-28. (Intervento presentato al convegno ELECTRONIC PROPERTIES OF NOVEL NANOSTRUCTURES: XIX International Winterschool/Euroconference on Electronic Properties of Novel Materials tenutosi a Kirchberg, Tirol, aut nel 2005) [10.1063/1.2103813].
Unusual two-dimensional polymer network in Li4C60 - An ESR study
PONTIROLI, Daniele;RICCO', Mauro
2005-01-01
Abstract
At room temperature Li4C60 forms a unique two-dimensional polymer network where the bonding encounters [2+2] cycloaddition along one direction and a single CC bond along the perpendicular direction. This structure thus involves both so-far known bonding motifs and is unique among fullerene structures. The structural and electronic properties of this system were investigated by temperature dependent cw-ESR. The ESR signal of the polymer phase has an extremely narrow Lorentzian line with a linewidth of about 0.3 G. On heating, the transition from the low-temperature polymer phase to a metallic monomeric phase occurs above ∼250 °C. The high-temperature ESR signal has a characteristic Dysonian lineshape. © 2005 American Institute of Physics.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
