TY - JOUR
T1 - Ups of buckminsterfullerene and other large clusters of carbon
AU - Yang, S. H.
AU - Pettiette, C. L.
AU - Conceicao, J.
AU - Cheshnovsky, O.
AU - Smalley, R. E.
PY - 1987/8/28
Y1 - 1987/8/28
N2 - Ultraviolet photoelectron spectra (UPS) are reported for mass-selected negative carbon clusters extracted from a pulsed supersonic beam. In the size range from 48 to 84 atoms, three clusters were found to be closed-shell species with appreciable HOMO-LUMO gaps: C50(0.3-0.6 eV), C60 (1.5-2.0 eV), and C70 (0.7-1.2 eV). UPS data for all other clusters revealed no appreciable HOMO-LUMO gap, indicating they are either open-shell species, or closed-shell species with small HOMO-LUMO gaps. Buckminsterfullerene (C60) was found to have the lowest electron affinity (2.6-2.8 eV) of any cluster. Agreement between these UPS data and electronic structure calculations strongly support the spheroidal shell model for C60.
AB - Ultraviolet photoelectron spectra (UPS) are reported for mass-selected negative carbon clusters extracted from a pulsed supersonic beam. In the size range from 48 to 84 atoms, three clusters were found to be closed-shell species with appreciable HOMO-LUMO gaps: C50(0.3-0.6 eV), C60 (1.5-2.0 eV), and C70 (0.7-1.2 eV). UPS data for all other clusters revealed no appreciable HOMO-LUMO gap, indicating they are either open-shell species, or closed-shell species with small HOMO-LUMO gaps. Buckminsterfullerene (C60) was found to have the lowest electron affinity (2.6-2.8 eV) of any cluster. Agreement between these UPS data and electronic structure calculations strongly support the spheroidal shell model for C60.
UR - http://www.scopus.com/inward/record.url?scp=0002891614&partnerID=8YFLogxK
U2 - 10.1016/0009-2614(87)80548-1
DO - 10.1016/0009-2614(87)80548-1
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AN - SCOPUS:0002891614
SN - 0009-2614
VL - 139
SP - 233
EP - 238
JO - Chemical Physics Letters
JF - Chemical Physics Letters
IS - 3-4
ER -