Ionic bonding in free nanoscale NaCl clusters as seen by photoelectron spectroscopy
2011 (English)In: Journal of Chemical Physics, ISSN 0021-9606, E-ISSN 1089-7690, Vol. 134, no 12, 124507- p.Article in journal (Refereed) Published
The free neutral nanoscale NaCl clusters have been produced in a beam and studied with x-ray photoelectron spectroscopy. High resolution spectra simultaneously containing cluster and molecular-monomer, featuring in both the valence and core-level Na 2p and Cl 2p regions, have been obtained. Cluster-level energy shifts of around 3 eV toward lower binding energy for Na 2p and approximate to 1 eV toward higher binding energy for Cl 2p relative to the monomer levels have been unambiguously established. To rationalize the core-level energy shifts of the nanoscale NaCl clusters, the ionic model taking into account all charge-charge and polarization interactions has been developed and implemented. A satisfactory agreement between the experimental and model results has been obtained. The model calculations have also shed additional light on the size-and site-specific cluster responses.
Place, publisher, year, edition, pages
2011. Vol. 134, no 12, 124507- p.
IdentifiersURN: urn:nbn:se:uu:diva-152787DOI: 10.1063/1.3570576ISI: 000289151400043OAI: oai:DiVA.org:uu-152787DiVA: diva2:414055