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- Soldatov, Alexander, et al.
(författare)
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Pressure polymerized C60 : Raman and NMR studies
- 1996
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Ingår i: Fullerenes and Fullerene Nanostructures. - Singapore : World Scientific. - 9810228538 ; , s. 344-348
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Konferensbidrag (refereegranskat)abstract
- The properties of bulk C60 have been studied after treatment at 1.1 GPa and 550-585 K. The treated material is insoluble in both toluene and 1,2-dichlorobenzene. Raman spectroscopy on modified aterial shows a large number of new lines, and the Raman pentagon pinch mode (Ag2) shifts from 1469 to 1458 /cm as on photopolymerization. MAS NMR shows one broadened line at the original C60 shift 144 ppm and a small peak at about 77 ppm due to the bridging carbons. The results verify previous suggested polymeric structures where the fullerene cages are connected by four-membered rings.
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