Single-Photon, Double Photodetachment of Nickel Phthalocyanine Tetrasulfonic Acid 4- Anions (CROSBI ID 310889)
Prilog u časopisu | izvorni znanstveni rad | međunarodna recenzija
Podaci o odgovornosti
Daly, Steven ; Girod, Marion ; Vojkovic, Marin ; Giuliani, Alexandre ; Antoine, Rodolphe ; Nahon, Laurent ; O’Hair, Richard A. J. ; Dugourd, Philippe
engleski
Single-Photon, Double Photodetachment of Nickel Phthalocyanine Tetrasulfonic Acid 4- Anions
Single-photon, two-electron photodetachment from nickel phthalocyanine tetrasulfonic acid tetra anions, [NiPc]4–, was examined in the gas-phase using a linear ion trap coupled to the DESIRS VUV beamline of the SOLEIL Synchrotron. This system was chosen since it has a low detachment energy, known charge localization, and well-defined geometrical and electronic structures. A threshold for two-electron loss is observed at 10.2 eV, around 1 eV lower than previously observed double detachment thresholds on multiple charged protein anions. The photodetachment energy of [NiPc]4– has been previously determined to be 3.5 eV and the photodetachment energy of [NiPc]3-• is determined in this work to be 4.3 eV. The observed single photon double electron detachment threshold is hence 5.9 eV higher than the energy required for sequential single electron loss. Possible mechanisms are for double photodetachment are discussed. These observations pave the way toward new, exciting experiments for probing double photodetachment at relatively low energies, including correlation measurements on emitted photoelectrons.
Anions ; Binding energy ; Electrical energy ; Kinetics ; Photodetachment
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Podaci o izdanju
7 (13)
2016.
2586-2590
objavljeno
1948-7185
10.1021/acs.jpclett.6b01030
Povezanost rada
Fizika, Interdisciplinarne prirodne znanosti, Kemija