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The vibrational Raman spectra of purified solid films of C60 and C70

✍ Scribed by Donald S. Bethune; Gerard Meijer; Wade C. Tang; Hal J. Rosen

Publisher: Elsevier Science
Year: 1990
Tongue: English
Weight: 402 KB
Volume: 174
Category: Article
ISSN: 0009-2614
DOI: 10.1016/0009-2614(90)85335-a

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✦ Synopsis

A technique to produce samples consisting primarily of Cw and C,,, by fractional sublimation of carbon soot was found and used to produce solid films of these molecules. Film compositions were determined using a surface analytical mass spectrometric technique. Vibrational Raman spectra of the purified films were measured and vibrational lines of both Cw and CT0 are identified. A CeO line at 273 cm-' is observed, in agreement with theoretical predictions for the lowest frequency H, "squashing" mode of Buckminsterfullerene. The two strongest Cm lines, found at 1469 and 497 cm-', can consistently be assigned to the two totally symmetric & modes on the basis of their frequencies and measured depolarization ratios.

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