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Resonance electron attachment to short-tail analogs of coenzyme Q10 is investigated in the electron energy range 0 eV-14 eV under gas-phase conditions by means of dissociative electron attachment spectroscopy. Formation of long-lived (milliseconds) molecular negative ions is detected at 1.2 eV, but not at thermal energy. A huge increase in the electron detachment time as compared with the reference para-benzoquinone (40 µs) is ascribed to the presence of the isoprene side chains. Elimination of a neutral CH3 radical is found to be the most intense decay detected on the microsecond time scale. The results give some insight into the timescale of electron-driven processes stimulated in living tissues by high-energy radiation and are of importance in prospective fields of radiobiology and medicine.
Original language | English |
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Article number | 111103 |
Pages (from-to) | 111103 |
Number of pages | 6 |
Journal | The Journal of Chemical Physics |
Volume | 153 |
Issue number | 11 |
DOIs | |
State | Published - 28 Sep 2020 |
ID: 64728952