ULTRAVIOLET PHOTOELECTRON-SPECTRA OF C-78 AND C-96

Ultraviolet photoelectron spectra of higher fullerenes C-78 and C-96 are measured with a synchrotron radiation light source. The spectral intensity oscillates and the peak positions shift, when the incident photon energy is changed. The h nu = 20 eV spectrum of C-78 resembles that of C-76, which suggests their analogous electronic structures. Comparison of the results with theoretical calculations is in favor of a C-2v geometry for the main C-78 isomer and a C-1 geometry for C-96 Upon potassium dosing onto C-96, a new peak emerges just above the first (HOMO) band of C-96. The spectra are deformed at high dosage.