Knockout driven fragmentation of porphyrins. Issue 30 (19th June 2017)

• Record Type: Journal Article
• Authors: Giacomozzi, Linda; Gatchell, Michael; de Ruette, Nathalie; Wolf, Michael; D'Angelo, Giovanna; Schmidt, Henning T.; Cederquist, Henrik; Zettergren, Henning
• Is Part Of: Physical chemistry chemical physics. Volume 19:Issue 30(2017)
• Page Start: 19750
• Page End: 19755
• Publication Date: 2017-06-19
• Subjects: Chemistry, Physical and theoretical -- Periodicals; 541.3
• DOI: 10.1039/c7cp01583f
• Languages: English
• ISSNs: 1463-9076

Abstract

Abstract : We have studied collisions between tetraphenylporphyrin cations and He or Ne at center-of-mass energies in the range 50–110 eV. Abstract : We have studied collisions between tetraphenylporphyrin cations and He or Ne at center-of-mass energies in the range 50–110 eV. The experimental results were interpreted in view of density functional theory calculations of dissociation energies and classical molecular dynamics simulations of how the molecules respond to the He/Ne impact. We demonstrate that prompt atom knockout strongly contributes to the total destruction cross sections. Such impulse driven processes typically yield highly reactive fragments and are expected to be important for collisions with any molecular system in this collision energy range, but have earlier been very difficult to isolate for biomolecules.