EPR Study of the Thermal Depolymerization Process of C60 Polymerized Phases

E. A. Zhilinskaya , A. V. Rakhmanina (1) , V. A. Davydov (1) , Viatcheslav Agafonov (2)

1 Institute of High-Pressure Physics
2 GREMAN - UMR 7347 - GREMAN (matériaux, microélectronique, acoustique et nanotechnologies)

The EPR method has been used to investigate thermal depolymerization processes of the tetragonal (T) and rhombohedral (R) 2D-polymerized phases of C60 in vacuum and in air. The behavior of paramagnetic centers (PCs) with doublet (S = 1/2) and triplet (S = 1) states during thermal depolymerization of the T and R phases have been analyzed and compared with the behavior of PCs of the monomer C60 phase at temperatures up to 650 K. A complete destruction of the PCs with triplet state on heating in the T and R phases has been observed. The EPR study of the monomer C60 phase shows the appearance of new PCs with triplet state in the 580–650 K temperature range.

Mots clés: depolymerization; Crystalline C60 polymerized phases; EPR study

Domaines: Science des matériaux [cond-mat.mtrl-sci]

E. A. Zhilinskaya, A. V. Rakhmanina, V. A. Davydov, Viatcheslav Agafonov. EPR Study of the Thermal Depolymerization Process of C60 Polymerized Phases. Fullerenes, Nanotubes and Carbon Nanostructures, 2012, 20 (4-7), pp.357--360. ⟨10.1080/1536383X.2012.655180⟩. ⟨hal-01716456⟩