uu.seUppsala universitets publikationer
Ändra sökning
RefereraExporteraLänk till posten
Permanent länk

Direktlänk
Referera
Referensformat
  • apa
  • ieee
  • modern-language-association
  • vancouver
  • Annat format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annat språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf
Resonant inelastic soft X-ray scattering spectra at the nitrogen and carbon K-edges of poly(pyridine-2,5-diyl)
Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Fysiska sektionen, Fysiska institutionen.
Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Fysiska sektionen, Fysiska institutionen.
Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Fysiska sektionen, Fysiska institutionen.
Visa övriga samt affilieringar
1999 (Engelska)Ingår i: Journal of Electron Spectroscopy and Related Phenomena, ISSN 0368-2048, E-ISSN 1873-2526, Vol. 101-103, s. 573-578Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

Resonant inelastic scattering measurements of the conjugated polymer, poly(pyridine-2,5-diyl) have been performed at the nitrogen and carbon K-edges using synchrotron radiation. For comparison, molecular orbital calculations of the spectra have been carried out with the repeat unit as a model molecule of the polymer chain. The resonant emission spectra show depletion of the π electron bands which is consistent with symmetry selection and momentum conservation rules. The depletion is most obvious in the resonant inelastic scattering spectra of carbon while the nitrogen spectra are dominated by lone pair n orbital emission of σ symmetry and are less excitation energy dependent. By comparing the measurements to calculations an isomeric dependence of the resonant spectra is found giving preference to two of the four possible isomers in the polymer.

Ort, förlag, år, upplaga, sidor
1999. Vol. 101-103, s. 573-578
Nyckelord [en]
resonant soft X-ray emission; X-ray scattering; conjugated polymers; CONJUGATED POLYMERS; RAMAN-SCATTERING; DOPED STATES; POLY(2;2'-BIPYRIDINE-5;5'-DIYL); POLY(P-PYRIDINE); SPECTROSCOPY
Nationell ämneskategori
Fysik
Identifikatorer
URN: urn:nbn:se:uu:diva-67042DOI: 10.1016/S0368-2048(98)00354-5OAI: oai:DiVA.org:uu-67042DiVA, id: diva2:94953
Tillgänglig från: 2006-11-15 Skapad: 2006-11-15 Senast uppdaterad: 2019-08-07Bibliografiskt granskad
Ingår i avhandling
1. Electronic structure studies using resonant X-ray and photoemission spectroscopy
Öppna denna publikation i ny flik eller fönster >>Electronic structure studies using resonant X-ray and photoemission spectroscopy
1999 (Engelska)Doktorsavhandling, sammanläggning (Övrigt vetenskapligt)
Abstract [en]

This thesis addresses the electronic structure of molecules and solids using resonant X-ray emission and photoemission spectroscopy. The use of monochromatic synchrotron radiation and the improved performance of the instrumentation have opened up the possibility of detailed analyses of the response of the electronic systems under interaction with X-rays. The experimental studies are accompanied by numerical ab initio calculations in the formalism of resonant inelastic scattering. The energy selectivity has made it possible for the first time to study how the chemical bonds in a molecule break up during resonant inelastic X-ray scattering. In the conjugated polymer systems, the element selectivity of the X-ray emission process made it possible to probe the different atomic elements separately. The X-ray emission technique proved to be useful for extracting isomeric information, and for measuring the change in the valence levels at different degrees of doping. In this thesis, spectral satellite features in transition metals were thoroughly investigated for various excitation energies around a core-level threshold. By measuring the relative spectral intensity of the satellites it was possible to extract information on the partial core-level widths. Using the nickel metal system as an example, it was shown that it is possible to probe the different core-excited states close toshake-up thresholds by measuring the relative spectral intensity variation of the Auger emission.Resonant photoemission measurements showed unambiguous evidence of interference effects. Theseeffects were also thoroughly probed using angle-dependent measurements. The combination of X-rayemission and absorption were useful for studying buried layers and interfaces due to the appreciable penetration depth of soft X-rays. X-ray scattering was further found to be useful for studying low-energy excited states of rare earth metallic compounds and transition metal oxides.

Ort, förlag, år, upplaga, sidor
Uppsala: Acta Universitatis Upsaliensis, 1999. s. 95
Serie
Comprehensive Summaries of Uppsala Dissertations from the Faculty of Science and Technology, ISSN 1104-232X ; 452
Nyckelord
Physics, Fysik
Nationell ämneskategori
Fysik
Forskningsämne
Fysik
Identifikatorer
urn:nbn:se:uu:diva-973 (URN)91-554-4463-6 (ISBN)
Disputation
1999-05-14, Siegbahn Lecture hall, Department of Physics, Uppsala University, Uppsala, 10:00
Tillgänglig från: 1999-04-23 Skapad: 1999-04-23 Senast uppdaterad: 2013-10-10Bibliografiskt granskad

Open Access i DiVA

fulltext(312 kB)81 nedladdningar
Filinformation
Filnamn FULLTEXT01.pdfFilstorlek 312 kBChecksumma SHA-512
f87e5bcff1a32188c59d30cd7ef41fe9085499cac7169b29d89391f76bef58278f558aeb7304c96a1e4fdaf867fdc4fc1213b7370ab7d4f190c4e80e70d19707
Typ fulltextMimetyp application/pdf

Övriga länkar

Förlagets fulltextPostprint at Linköping University Electronic PressMartin Magnuson's homepage

Personposter BETA

Magnuson, MartinSåthe, ConnyNordgren, Joseph

Sök vidare i DiVA

Av författaren/redaktören
Magnuson, MartinSåthe, ConnyNordgren, Joseph
Av organisationen
Fysiska institutionen
I samma tidskrift
Journal of Electron Spectroscopy and Related Phenomena
Fysik

Sök vidare utanför DiVA

GoogleGoogle Scholar
Totalt: 81 nedladdningar
Antalet nedladdningar är summan av nedladdningar för alla fulltexter. Det kan inkludera t.ex tidigare versioner som nu inte längre är tillgängliga.

doi
urn-nbn

Altmetricpoäng

doi
urn-nbn
Totalt: 486 träffar
RefereraExporteraLänk till posten
Permanent länk

Direktlänk
Referera
Referensformat
  • apa
  • ieee
  • modern-language-association
  • vancouver
  • Annat format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annat språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf