Vibrational spectra of C-60 - C8H8 and C-70 - C6H8 in the rotor-stator and polymer phases

Klupp, Gyöngyi and Borondics, Ferenc and Kováts, Éva and Pekker, Áron and Bényei, G. and Jalsovszky, I. and Hackl, R. and Pekker, Sándor and Kamarás, Katalin (2007) Vibrational spectra of C-60 - C8H8 and C-70 - C6H8 in the rotor-stator and polymer phases. JOURNAL OF PHYSICAL CHEMISTRY B - CONDENSED MATTER MATERIALS SURFACES INTERFACES AND BIOPHYSICAL, 111 (43). pp. 12375-12382. ISSN 1520-6106

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Abstract

C-60 center dot CgHs and C-70 center dot C8H8 are prototypes of rotor-stator cocrystals. We present infrared and Raman spectra of these materials and show how the rotor-stator nature is reflected in their vibrational properties. We measured the vibrational spectra of the polymer phases poly(C60C8H8) and Poly(C70C8H8) resulting from a solid-state reaction occurring on heating. On the basis of the spectra, we propose a connection pattern for the fullerene in Poly(C60C8H8), where the symmetry of the C-60 molecule is D-2h. On illuminating the C-60-C8H8 cocrystal with green or blue light, a photochemical reaction was observed leading to a product similar to that of the thermal polymerization.

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