% IMPORTANT: The following is UTF-8 encoded.  This means that in the presence
% of non-ASCII characters, it will not work with BibTeX 0.99 or older.
% Instead, you should use an up-to-date BibTeX implementation like “bibtex8” or
% “biber”.

@ARTICLE{Krause:151796,
      author       = {Krause, Christina and Zorn, Reiner and Emmerling, Franziska
                      and Frick, Bernhard and Huber, Patrick and Falkenhagen, Jana
                      and Schoenhals, A.},
      title        = {{V}ibrational {D}ensity of {S}tates of {T}riphenylene
                      {B}ased {D}iscotic {L}iquid {C}rystals: {D}ependence on the
                      {L}ength of the {A}lkyl {C}hain},
      journal      = {Physical chemistry, chemical physics},
      volume       = {16},
      issn         = {1463-9084},
      address      = {Cambridge},
      publisher    = {RSC Publ.},
      reportid     = {FZJ-2014-01675},
      pages        = {7324 - 7333},
      year         = {2014},
      abstract     = {The vibrational density of states of a series of homologous
                      triphenylene-based discotic liquid crystals HATn (n = 5, 6,
                      8, 10, 12) depending on the length of the aliphatic side
                      chain is investigated by means of inelastic neutron
                      scattering. All studied materials have a plastic crystalline
                      phase at low temperatures, followed by a hexagonally ordered
                      liquid crystalline phase at higher temperatures and a quasi
                      isotropic phase at the highest temperatures. The X-ray
                      scattering pattern for the plastic crystalline phase of all
                      materials shows a sharp Bragg reflection corresponding to
                      the intercolumnar distance in the lower q-range and a peak
                      at circa 17 nm−1 related to intracolumnar distances
                      between the cores perpendicular to the columns as well as a
                      broad amorphous halo related to the disordered structure of
                      the methylene groups in the side chains in the higher
                      q-range. The intercolumnar distance increases linearly with
                      increasing chain length for the hexagonal columnar ordered
                      liquid crystalline phase. A similar behaviour is assumed for
                      the plastic crystalline phase. Besides n = 8 all materials
                      under study exhibit a Boson peak. With increasing chain
                      length, the frequency of the Boson peak decreases and its
                      intensity increases. This can be explained by a
                      self-organized confinement model. The peaks for n = 10, 12
                      are much narrower than for n = 5, 6 which might imply the
                      transformation from a rigid system to a softer one with
                      increasing chain length. Moreover the results can also be
                      discussed in the framework of a transition from an
                      uncorrelated to a correlated disorder with increasing n
                      where n = 8 might be speculatively considered as a
                      transitional state.},
      cin          = {ICS-1 / Neutronenstreuung ; JCNS-1},
      ddc          = {540},
      cid          = {I:(DE-Juel1)ICS-1-20110106 / I:(DE-Juel1)JCNS-1-20110106},
      pnm          = {451 - Soft Matter Composites (POF2-451) / 54G - JCNS
                      (POF2-54G24)},
      pid          = {G:(DE-HGF)POF2-451 / G:(DE-HGF)POF2-54G24},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000333523500019},
      doi          = {10.1039/c3cp55303e},
      url          = {https://juser.fz-juelich.de/record/151796},
}