Core-excitations of biphenyl
2005 (English)In: Journal of Physical Chemistry A, ISSN 1089-5639, E-ISSN 1520-5215, Vol. 109, no 7, 1330-1336 p.Article in journal (Refereed) Published
High-resolution C(1s) near-edge X-ray absorption and X-ray photoionization spectra of the free biphenyl molecule are presented and theoretically analyzed in order to allow an assignment of the observed spectral features. Finite lifetime broadening, a high density of vibrational states, and a strong overlap of contributions from chemically different carbon atom sites only partially allow resolving the vibrational fine structure. However, the shape and width of the spectral profiles are strongly determined by both chemical shifts and vibronic effects. In particular, different from photoionization of valence levels, both types of core level spectra do not contain contributions from dihedral modes which are related to the twisting motion of the two phenyl rings. Contrary to naphthalene, C-H stretching modes are significantly enhanced in the core excitation spectra of biphenyl while the contributions from C-C stretching modes are reduced.
Place, publisher, year, edition, pages
2005. Vol. 109, no 7, 1330-1336 p.
Absorption spectroscopy, Chemical bonds, Computer simulation, Crucibles, Differentiation (calculus), Electron energy levels, Molecular vibrations, Oligomers, Oscillators (electronic), Photoionization, Resonance, X ray photoelectron spectroscopy
IdentifiersURN: urn:nbn:se:kth:diva-5552DOI: 10.1021/jp045447zISI: 000227108500010ScopusID: 2-s2.0-14644427195OAI: oai:DiVA.org:kth-5552DiVA: diva2:9953
QC 201009062006-04-052006-04-052010-12-15Bibliographically approved