Ion collision-induced chemistry in pure and mixed loosely bound clusters of coronene and C 60 molecules
| Autor: | Henning Zettergren, Henrik Cederquist, Alicja Domaracka, Michael Gatchell, R. Delaunay, Bernd A. Huber, Patrick Rousseau, Arkadiusz Mika |
|---|---|
| Přispěvatelé: | Centre de recherche sur les Ions, les MAtériaux et la Photonique (CIMAP - UMR 6252), Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Normandie Université (NU)-École Nationale Supérieure d'Ingénieurs de Caen (ENSICAEN), Normandie Université (NU)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Centre National de la Recherche Scientifique (CNRS), Normandie Université (NU), Centre National de la Recherche Scientifique (CNRS), Department of Physics [Stockholm], Stockholm University, Normandie Université (NU)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche sur les Matériaux Avancés (IRMA), Normandie Université (NU)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Rouen Normandie (UNIROUEN), Normandie Université (NU)-Institut national des sciences appliquées Rouen Normandie (INSA Rouen Normandie), Institut National des Sciences Appliquées (INSA)-Normandie Université (NU)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Rouen Normandie (UNIROUEN), Institut National des Sciences Appliquées (INSA)-Normandie Université (NU)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS) |
| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
Chemistry
[PHYS.PHYS.PHYS-ATM-PH]Physics [physics]/Physics [physics]/Atomic and Molecular Clusters [physics.atm-clus] General Physics and Astronomy Mass spectrometry 01 natural sciences Coronene Ion chemistry.chemical_compound Fragmentation (mass spectrometry) Covalent bond Chemical physics Ionization 0103 physical sciences Physics::Atomic and Molecular Clusters Cluster (physics) Molecule [PHYS.PHYS.PHYS-CHEM-PH]Physics [physics]/Physics [physics]/Chemical Physics [physics.chem-ph] Physical and Theoretical Chemistry Nuclear Experiment 010306 general physics 010303 astronomy & astrophysics ComputingMilieux_MISCELLANEOUS |
| Zdroj: | Physical Chemistry Chemical Physics Physical Chemistry Chemical Physics, Royal Society of Chemistry, 2018, 20 (22), pp.15052-15060. ⟨10.1039/C8CP01179F⟩ Physical Chemistry Chemical Physics, 2018, 20 (22), pp.15052-15060. ⟨10.1039/C8CP01179F⟩ |
| ISSN: | 1463-9076 1463-9084 |
| DOI: | 10.1039/C8CP01179F⟩ |
| Popis: | Ionization, fragmentation and molecular growth have been studied in collisions of 22.5 keV He2+- or 3 keV Ar+-projectiles with pure loosely bound clusters of coronene (C24H12) molecules or with loosely bound mixed C60-C24H12 clusters by using mass spectrometry. The heavier and slower Ar+ projectiles induce prompt knockout-fragmentation - C- and/or H-losses - from individual molecules and highly efficient secondary molecular growth reactions before the clusters disintegrate on picosecond timescales. The lighter and faster He2+ projectiles have a higher charge and the main reactions are then ionization by ions that are not penetrating the clusters. This leads mostly to cluster fragmentation without molecular growth. However, here penetrating collisions may also lead to molecular growth but to a much smaller extent than with 3 keV Ar+. Here we present fragmentation and molecular growth mass distributions with 1 mass unit resolution, which reveals that the same numbers of C- and H-atoms often participate in the formation and breaking of covalent bonds inside the clusters. We find that masses close to those with integer numbers of intact coronene molecules, or with integer numbers of both intact coronene and C60 molecules, are formed where often one or several H-atoms are missing or have been added on. We also find that super-hydrogenated coronene is formed inside the clusters. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|