Introduction to Ultraviolet Photoelectron Spectroscopy

Ultraviolet Photoelectron Spectroscopy of Organic Anions

Ultraviolet Photoelectron Spectroscopy of o-, m-, and p-Halobenzyl Anions

The 351 nm photoelectron spectra of the ortho, meta, and para isomers of the fluorobenzyl, chlorobenzyl, and bromobenzyl anions all exhibit resolved, analyzable vibrational structure. For a given isomer, the electron affinity increases with increasing halide atomic number, while for a given halogen substituent, the meta isomer has the largest electron affinity and the para isomer has the lowest...

He I ultraviolet photoelectron spectroscopy of benzene and pyridine in supersonic molecular beams using photoelectron imaging.

We performed He I ultraviolet photoelectron spectroscopy (UPS) of jet-cooled aromatic molecules using a newly developed photoelectron imaging (PEI) spectrometer. The PEI spectrometer can measure photoelectron spectra and photoelectron angular distributions at a considerably higher efficiency than a conventional spectrometer that uses a hemispherical energy analyzer. One technical problem with P...

Iodopentafluorobenzene: electronic state spectroscopy by high resolution vacuum ultraviolet photoabsorption and photoelectron spectroscopy

The electronic transitions of iodopentafluorobenzene (C6F5I) have been investigated experimentally for the first time by high-resolution photoabsorption spectroscopy in the energy range 3.6 – 10.7 eV. The character of the valence excited states has been discussed taking into account calculations available in the literature. The ionisation energies of the molecule in its electronic ground state ...

Ultraviolet Photoelectron Spectrum of NO2-

The 351.1-nm (3.532-eV) photoelectron spectrum of the nitrite anion (NO,) is reported. The electron affinity of NO2 is found to be 2.273 f 0.005 eV, which leads to the heat of formation AfHoo(NOJ = -183.4 f 0.9 k.J/fiol(-43.8 * 0.2 kcal/mol). Vibrational progressions of the symmetric stretch and bending modes of nitrogen dioxide, N02(X2AI), are observed up to 8000 cm-’ above the ground state. O...