Article Dans Une Revue The Journal of Chemical Physics Année : 2003

The electronic states of 2-furanmethanol (furfuryl alcohol) studied by photon absorption and electron impact spectroscopies

Résumé

The photoelectron spectrum of 2-furanmethanol~furfuryl alcohol!has been measured for ionizationenergies between 8 and 11.2 eV and the first three ionization bands assigned top3,p2, andnoionizations in order of increasing binding energy. The photoabsorption spectrum has been recordedin the gas phase using both a synchrotron radiation source~5–9.91 eV, 248 –125 nm!and electronenergy-loss spectroscopy under electric-dipole conditions~5–10.9 eV, 248 –90 nm!. The~UV!absorption spectrum has also been recorded in solution~4.2– 6.36 eV, 292–195 nm!. The electronicexcitation spectrum appears to be dominated by transitions betweenpandp*orbitals in thearomatic ring, leading to the conclusion that the frontier molecular orbitals of furan are affected onlyslightly on replacement of a H atom by the – CH2OH group. Additional experiments investigatingelectron impact at near-threshold energies have revealed two low-lying triplet states and at least oneelectron/molecule shape resonance. Dissociative electron attachment also shows to be widespread infurfuryl alcohol.The photoelectron spectrum of 2-furanmethanol~furfuryl alcohol!has been measured for ionizationenergies between 8 and 11.2 eV and the first three ionization bands assigned top3,p2, andnoionizations in order of increasing binding energy. The photoabsorption spectrum has been recordedin the gas phase using both a synchrotron radiation source~5–9.91 eV, 248 –125 nm!and electronenergy-loss spectroscopy under electric-dipole conditions~5–10.9 eV, 248 –90 nm!. The~UV!absorption spectrum has also been recorded in solution~4.2– 6.36 eV, 292–195 nm!. The electronicexcitation spectrum appears to be dominated by transitions betweenpandp*orbitals in thearomatic ring, leading to the conclusion that the frontier molecular orbitals of furan are affected onlyslightly on replacement of a H atom by the – CH2OH group. Additional experiments investigatingelectron impact at near-threshold energies have revealed two low-lying triplet states and at least oneelectron/molecule shape resonance. Dissociative electron attachment also shows to be widespread infurfuryl alcohol.

Dates et versions

hal-01739281 , version 1 (20-03-2018)

Identifiants

Citer

Alexandre Giuliani, I. C. Walker, J. Delwiche, S. V. Hoffmann, P. Limão-Vieira, et al.. The electronic states of 2-furanmethanol (furfuryl alcohol) studied by photon absorption and electron impact spectroscopies. The Journal of Chemical Physics, 2003, 119 (14), pp.7282-7288. ⟨10.1063/1.1603733⟩. ⟨hal-01739281⟩
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