TY - JOUR
T1 - Reprint of
T2 - 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.
N1 - Funding Information:
The authors wish to thank R.F. Curl, H.W. Kroto, J.R. Heath, and SC. O’Brien for stimulating discussions and encouragement in the course of this research. Support from the National Science Foundation and the Robert A. Welch Foundation is gratefully acknowledged.
PY - 2013
Y1 - 2013
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=84889080197&partnerID=8YFLogxK
U2 - 10.1016/j.cplett.2013.08.063
DO - 10.1016/j.cplett.2013.08.063
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AN - SCOPUS:84889080197
SN - 0009-2614
VL - 589
SP - 31
EP - 34
JO - Chemical Physics Letters
JF - Chemical Physics Letters
ER -