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  • Soret band  (1)
  • N ligands
  • Hemiporphycen
  • Springer  (1)
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    Electronic Resource
    Electronic Resource
    Springer
    Photosynthesis research 22 (1989), S. 201-210 
    ISSN: 1573-5079
    Keywords: exciton theory ; optical spectroscopy ; porphyrin dimer ; Soret band
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract The Soret absorption spectra of six synthetic rigid porphyrin dimers whose crystal structures have been determined are simulated using simple exciton theory. The objective is to test the validity of the point dipole and associated approximations; the electronic interaction parameters are thus calculated using data obtained from the monomer spectra, with no adjustable parameters. Satisfactory agreement between theory and experiment is obtained for one class of dimers but not for a second. This poses a challenge for semiempirical electronic structure methods as to whether improvements over the point dipole calculations can be obtained.
    Type of Medium: Electronic Resource
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