SwePub
Sök i SwePub databas

  Extended search

Träfflista för sökning "WFRF:(Persson Per Axel) srt2:(2000-2004)"

Search: WFRF:(Persson Per Axel) > (2000-2004)

  • Result 1-2 of 2
Sort/group result
   
EnumerationReferenceCoverFind
1.
  • Persson, Per-Axel, et al. (author)
  • Enhanced thermal dissociation of optically excited C60 chains.
  • 2000
  • In: Europhysics letters. - : EDP Sciences. - 0295-5075 .- 1286-4854. ; 49:5, s. 631-636
  • Journal article (peer-reviewed)abstract
    • The thermal dissociation of C60 polymers has been studied using Raman scattering. The measured dissociation rate depends on the intensity of the 1064 nm NIR excitation, showing that i) the band gap is smaller than 1.17 eV and ii) a radiation-enhanced thermal breakdown path exists in addition to the "normal'' thermal breakdown mechanism. Quantum chemical calculations show that the energy barrier Ea for thermal breakdown is about 40% lower in the first (optically) excited state than in the ground state. This agrees well with the ratio between our radiation-enhanced value $E_{a} = (1.1 \pm 0.02)\,eV$ and values near 1.9 eV measured by purely thermal methods.
  •  
2.
  • Sundqvist, Bertil, et al. (author)
  • Structure and stability of pressure polymerized C60
  • 2000
  • In: Molecular Materials: Molecular Crystals and Liquid Crystals Section C, vol. 13. - : Overseas Publishers Association N.V.. ; 13:1-4, s. 117-122
  • Conference paper (peer-reviewed)abstract
    • We discuss the bond energy of the orthorhombic C60 polymer and the structure of the two-dimensional C60 polymers. For the orthorhombic polymer, measurements of the dissociation energy by different methods give results that differ by a factor of two. We show that optical excitations lead to a temporary weakening of the intermolecular bonds and optical measurements thus show a low apparent bond energy. We have also polymerized a single crystal of C60 into two-dimensional phases. X-ray diffraction studies of this crystal have enabled us to determine the stacking sequences of both the tetragonal and the rhombohedral structures.
  •  
Skapa referenser, mejla, bekava och länka
  • Result 1-2 of 2
Type of publication
conference paper (1)
journal article (1)
Type of content
peer-reviewed (2)
Author/Editor
Jacobsson, Per (2)
Sundqvist, Bertil (2)
Stafström, Sven (2)
Persson, Per-Axel (2)
Wågberg, Thomas (1)
Launois, Pascale (1)
show more...
Moret, Roger (1)
show less...
University
Umeå University (2)
Linköping University (1)
Language
English (2)
Research subject (UKÄ/SCB)
Natural sciences (2)
Year
2000 (2)

Kungliga biblioteket hanterar dina personuppgifter i enlighet med EU:s dataskyddsförordning (2018), GDPR. Läs mer om hur det funkar här.
Så här hanterar KB dina uppgifter vid användning av denna tjänst.

 
pil uppåt Close

Copy and save the link in order to return to this view