Cui Guang-Lei et al 2008 Chinese Phys. Lett. 25 658 doi:10.1088/0256-307X/25/2/082
Cui Guang-Lei1, Gu Min1, Yu Yao1, Xu Xi-Bin1, Wang Li-Hang1, Chen Xiao1, Feng Duan1 and Tang Tong Bor2
Show affiliationsPolymerization of C60 is realized under high temperature and high pressure. X-ray diffraction reveals a rhombohedral lattice structure in the product, and solid-state 13C nuclear magnetic resonance spectroscopy confirms the formation of sp3 bonds between C60 molecules. Specific heat is then measured over the temperature range of 300–2 K. It is found that its specific heat values are significantly less than those in fullerite within the region of 80–2K, and this huge reduction is attributed to the suppression of intermolecular librational modes in polymerized C60. An excellent fit to the experimental data over the entire temperature range is provided by a model, which needs to include only three-dimensional and two-dimensional translational modes in various contributions at different temperatures.
61.48.-c Structure of fullerenes and related hollow molecular clusters
76.60.-k Nuclear magnetic resonance and relaxation
Soft matter, liquids and polymers
Condensed matter: electrical, magnetic and optical
Issue 2 (February 2008)
Received 13 August 2007
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