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Article Dans Une Revue The European Physical Journal D : Atomic, molecular, optical and plasma physics Année : 2021

Photofragmentation and electron detachment of aromatic phosphonate, sulfonate and phosphate oxyanions

Résumé

The photodetachment energy threshold, as well as vibrationally-resolved spectral signatures of the lower lying excited states and dipole bound states in model aromatic phosphonate, sulfonate and phosphate oxyanions have been investigated using a photofragmentation spectrometer equipped with a cold ion trap. The effect of the laser excitation was monitored by mass-selective detection of product ion fragments or, alternatively, measuring the yield of the complementary neutral radicals discriminated according to their kinetic energy. The anions phenylphosphate, phenylsulfonate and p-toluenesulfonate evidenced the expected behaviour, characterised by the predominance of ionic fragmentation processes, at low energies, rapidly evolving to a scenario controlled by the electron photodetachment channel at higher energies. Surprisingly for such a similar system, the phenylphosphonate anion does not have any ionic fragmentation channels and only exhibits the presence of dipole bound states.
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Dates et versions

hal-03169735 , version 1 (15-03-2021)

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Jennifer A. Noble, Ernesto Marceca, Claude Dedonder, Isaure Carvin, Eric Gloaguen, et al.. Photofragmentation and electron detachment of aromatic phosphonate, sulfonate and phosphate oxyanions. The European Physical Journal D : Atomic, molecular, optical and plasma physics, 2021, 75 (3), ⟨10.1140/epjd/s10053-021-00094-8⟩. ⟨hal-03169735⟩
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