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

Bethune, Donald S.; Meijer, Gerard; Tang, Wade C.; Rosen, Hal J.

doi:10.1016/0009-2614(90)85335-A

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

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Bethune, D. S., Meijer, G., Tang, W. C., & Rosen, H. J. (1990). The vibrational Raman spectra of purified solid films of C₆₀ and C₇₀. Chemical Physics Letters, 174(3-4), 219-222. doi:10.1016/0009-2614(90)85335-A.

Cite as: https://hdl.handle.net/21.11116/0000-000C-225D-6

Abstract

A technique to produce samples consisting primarily of C₆₀ and C₇₀ 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 C₆₀ and C₇₀ are identified. A C₆₀ line at 273 cm⁻¹ is observed, in agreement with theoretical predictions for the lowest frequency H_g “squashing” mode of Buckminsterfullerene. The two strongest C₆₀ lines, found at 1469 and 497 cm⁻¹, can consistently be assigned to the two totally symmetric A_g modes on the basis of their frequencies and measured depolarization ratios.