Electronic structure studies of pressure-polymerized C-60

We have investigated the electronic structure of one and two-dimensional C- 60 polymers with regard to both their low-lying excitations and C 1s excita tion spectra by means of electron energy-loss spectroscopy in transmission. We compare the results with those for pristine C-60. In general, the spect ra for the polymers resemble those for pristine C-60 but show a broadening due to both the lowering of the symmetry and the increased intermolecular o verlap. This is also reflected by a reduction of the optical gap in compari son with pristine C-60.