@unpublished{MegowKoerzdoerferRengeretal.2015,
  author    = {Megow, J{\"o}rg and K{\"o}rzd{\"o}rfer, Thomas and Renger, Thomas and Sparenberg, Mino and Blumstengel, Sylke and May, Volkhard},
  title     = {Reply to "Comment on 'Calculating Optical Absorption Spectra of Thin Polycrystalline Organic Films: Structural Disorder and Site-Dependent van der Waals Interaction"},
  series = {The journal of physical chemistry : C, Nanomaterials and interfaces},
  volume    = {119},
  journal   = {The journal of physical chemistry : C, Nanomaterials and interfaces},
  number    = {32},
  publisher = {American Chemical Society},
  address   = {Washington},
  issn      = {1932-7447},
  doi       = {10.1021/acs.jpcc.5b05536},
  pages     = {18818 -- 18820},
  year      = {2015},
  language  = {en}
}
@article{MegowKoerzdoerferRengeretal.2015,
  author    = {Megow, J{\"o}rg and K{\"o}rzd{\"o}rfer, Thomas and Renger, Thomas and Sparenberg, Mino and Blumstengel, Sylke and Henneberger, Fritz and May, Volkhard},
  title     = {Calculating Optical Absorption Spectra of Thin Polycrystalline Organic Films: Structural Disorder and Site-Dependent van der Waals Interaction},
  series = {The journal of physical chemistry : C, Nanomaterials and interfaces},
  volume    = {119},
  journal   = {The journal of physical chemistry : C, Nanomaterials and interfaces},
  number    = {10},
  publisher = {American Chemical Society},
  address   = {Washington},
  issn      = {1932-7447},
  doi       = {10.1021/acs.jpcc.5b01587},
  pages     = {5747 -- 5751},
  year      = {2015},
  abstract  = {We propose a new approach for calculating the change of the absorption spectrum of a molecule when moved from the gas phase to a crystalline morphology. The so-called gas-to-crystal shift Delta epsilon(m) is mainly caused by dispersion effects and depends sensitively on the molecules specific position in the nanoscopic setting. Using an extended dipole approximation, we are able to divide Delta epsilon(m)= -QW(m) in two factors, where Q depends only on the molecular species and accounts for all nonresonant electronic transitions contributing to the dispersion while W-m is a geometry factor expressing the site dependence of the shift in a given molecular structure. The ability of our approach to predict absorption spectra is demonstrated using the example of polycrystalline films of 3,4,9,10-perylenetetracarboxylic diimide (PTCDI).},
  language  = {en}
}