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RESEARCH PRODUCT
Isomer effects in fragmentation of Polycyclic Aromatic Hydrocarbons
L GiacomozziN. De RuetteJ. Y. ChesnelJ. Y. ChesnelU. BērziņšMark H. StockettMark H. StockettLamri AdouiLamri AdouiSylvain MaclotSylvain MaclotHenning T. SchmidtHenning ZettergrenTao ChenPatrick RousseauPatrick RousseauHenrik CederquistBernd A. HuberMichael Gatchellsubject
IONSCollision-induced dissociationIonic bondingPolycyclic aromatic hydrocarbonPhotochemistryANTHRACENE01 natural sciencesDissociation (chemistry)IsomersMOLECULESchemistry.chemical_compoundFragmentation (mass spectrometry)Fragmentation0103 physical sciencesMoleculeCollisionsTANDEM MASS-SPECTROMETRYPolycyclic Aromatic HydrocarbonsPhysical and Theoretical ChemistryCOLLISION-INDUCED DISSOCIATION010303 astronomy & astrophysicsInstrumentationSpectroscopyNon-statistical fragmentationchemistry.chemical_classificationAnthracenePolycyclic Aromatic Hydrocarbons PAHs[PHYS.PHYS.PHYS-ATM-PH]Physics [physics]/Physics [physics]/Atomic and Molecular Clusters [physics.atm-clus]010401 analytical chemistryCondensed Matter Physics0104 chemical sciencesDIFFERENTIATIONchemistryIONIZATIONCATIONSGROWTH[PHYS.PHYS.PHYS-CHEM-PH]Physics [physics]/Physics [physics]/Chemical Physics [physics.chem-ph]Ground stateC14H10description
We have observed significant differences in the fragmentation patterns of isomeric Polycyclic Aromatic Hydrocarbon (PAH) cations following collisions with helium atoms at center-of-mass energies around 100 eV. This is in contrast to the situation at other collision energies or in photo-absorption experiments where isomeric effects are very weak and where the lowest-energy dissociation channels (H- and C2H2-loss) domihate in statistical fragmentation processes. In the 100 eV range, non-statistical fragmentation also competes and is uniquely linked to losses of single carbon atoms (CHx-losses). We find that such CHx-losses are correlated with the ionic ground state energy within a given group of isomers. We present results for three C16H10+, four C18H12+ and five C20H12+ isomers colliding with He. (C) 2015 The Authors. Published by Elsevier B.V.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2015-12-01 | International Journal of Mass Spectrometry |