2014/06/11 by Dao‐Ling Huang, Phuong D. Dau, Hongtao Liu +1 · 1 citation
Chemistry · Materials Science · #Fullerene Chemistry and Applications #Graphene research and applications #Boron and Carbon Nanomaterials Research #Electron #Resolution (logic) #X-ray photoelectron spectroscopy #Electron affinity (data page) #High resolution #Chemistry #Fullerene #Analytical Chemistry (journal) #Crystallography #Atomic physics #Physics #Nuclear magnetic resonance #Geology #Remote sensing #Nuclear physics #Computer science #Molecule #Chromatography #Artificial intelligence #Organic chemistry
paper · doi:10.1063/1.4881421
openalex publication_date 2014/06/11 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/06
High-resolution photoelectron imaging and spectroscopy of cold C₆₀⁻ anions are reported using a newly built photoelectron imaging apparatus coupled with an electrospray ionization source and a temperature-controlled cryogenic ion trap. Vibrationally resolved photoelectron spectra are obtained for the detachment transition from the ground state of C₆₀⁻ to that of C60 at various detachment wavelengths from 354.84 nm to 461.35 nm. The electron affinity of C60 is accurately measured to be 2.6835 ± 0.0006 eV. Numerous unexpected vibrational excitations are observed in the photoelectron spectra due to the Jahn-Teller effect in C₆₀⁻ and Hertzberg-Teller vibronic coupling in both C₆₀⁻ and C60. Both the relative intensities of vibrational peaks and their photoelectron angular distributions provide evidence for the vibronic couplings. The observed p-wave-like behavior in the angular distribution of the 0₀⁰ transition suggests that the electron is detached from an s-type orbital.