Production and characterization of crystalline 13C60

✍ Scribed by I. Holleman; M.G.H. Boogaarts; P.J.M. van Bentum; G. Meijer

• Book ID: 103034034
• Publisher: Elsevier Science
• Year: 1995
• Tongue: English
• Weight: 486 KB
• Volume: 240
• Category: Article
• ISSN: 0009-2614
• DOI: 10.1016/0009-2614(95)00511-2

✦ Synopsis

High-purity crystals of 99.1% 13C enriched C60 have been produced and their Raman and fluorescence spectra recorded together with those of C60 crystals containing the ~3C isotope in natural abundance. The relative frequency shift of the intramolecular Raman-active modes is found to be determined by the square root of the averaged mass of the C60 molecules. From the observed blue-shift of the electronic origin of the fluorescence spectrum of C60 upon 12C ~ 13C substitution, it is concluded that the averaged intramolecular vibrational frequency of C60 decreases slightly upon electronic excitation.