Sundar, C. S. ; Sahu, P. Ch. ; Sastry, V. S. ; Rao, G. V. N. ; Sridharan, V. ; Premila, M. ; Bharathi, A. ; Hariharan, Y. ; Radhakrishnan, T. S. ; Muthu, D. V. S. ; Sood, A. K. (1996) Pressure-induced polymerization of fullerenes: a comparative study of C60 and C70 Physical Review B: Condensed Matter and Materials Physics, 53 (13). pp. 8180-8183. ISSN 1098-0121
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Official URL: http://prb.aps.org/abstract/PRB/v53/i13/p8180_1
Related URL: http://dx.doi.org/10.1103/PhysRevB.53.8180
Abstract
To investigate the polymerization of fullerenes, solid C60 and C70 have been subjected simultaneously to high pressures and temperatures, with pressures up to 7.5 GPa and temperatures up to 800 °C. X-ray-diffraction measurements indicate that the FCC solid C60 transforms to an orthorhombic structure consisting of a polymerized linear chain of C60 molecules. The associated changes in the intramolecular vibrational modes have been probed through Raman and Infrared measurements. In contrast to solid C60, under similar conditions, polymerization is not observed in the case of solid C70, although there is a structural transition from the initial hcp structure to a Rhombohedral structure. This lack of polymerization in C70 is discussed in terms of the structure of solid C70 under high pressure and temperature conditions, coupled with the topochemical features of the C70 molecule.
Item Type: | Article |
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Source: | Copyright of this article belongs to The American Physical Society. |
ID Code: | 53193 |
Deposited On: | 05 Aug 2011 07:57 |
Last Modified: | 18 May 2016 06:25 |
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