% 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{Yildirim:873957,
      author       = {Yildirim, Arda and Krause, Christina and Zorn, Reiner and
                      Lohstroh, Wiebke and Schneider, Gerald Johannes and Zamponi,
                      Michaela and Holderer, Olaf and Frick, Bernhard and
                      Schönhals, Andreas},
      title        = {{C}omplex molecular dynamics of a symmetric model discotic
                      liquid crystal revealed by broadband dielectric, thermal and
                      neutron spectroscopy},
      journal      = {Soft matter},
      volume       = {16},
      number       = {8},
      issn         = {1744-6848},
      address      = {London},
      publisher    = {Royal Soc. of Chemistry},
      reportid     = {FZJ-2020-01120},
      pages        = {2005-2016},
      year         = {2020},
      abstract     = {The molecular dynamics of the triphenylene-based discotic
                      liquid crystal HAT6 is investigated by broadband dielectric
                      spectroscopy, advanced dynamical calorimetry and neutron
                      scattering. Differential scanning calorimetry in combination
                      with X-ray scattering reveals that HAT6 has a plastic
                      crystalline phase at low temperatures, a hexagonally ordered
                      liquid crystalline phase at higher temperatures and
                      undergoes a clearing transition at even higher temperatures.
                      The dielectric spectra show several relaxation processes: a
                      localized γ-relaxation at lower temperatures and a so
                      called α2-relaxation at higher temperatures. The relaxation
                      rates of the α2-relaxation have a complex temperature
                      dependence and bear similarities to a dynamic glass
                      transition. The relaxation rates estimated by Hyper DSC,
                      Fast Scanning calorimetry and AC Chip calorimetry have a
                      different temperature dependence than the dielectric
                      α2-relaxation and follow the VFT-behavior characteristic
                      for glassy dynamics. Therefore, this process is called
                      α1-relaxation. Its relaxation rates show a similarity with
                      that of polyethylene. For this reason, the α1-relaxation is
                      assigned to the dynamic glass transition of the alkyl chains
                      in the intercolumnar space. Moreover, this process is not
                      observed by dielectric spectroscopy, which supports its
                      assignment. The α2-relaxation is assigned to small scale
                      translatorial and/or small angle fluctuations of the cores.
                      The neutron scattering data reveal two relaxation processes.
                      The process observed at shorter relaxation times is assigned
                      to the methyl group rotation. The second relaxation process
                      at longer time scales agree in the temperature dependence of
                      its relaxation rates with that of the dielectric
                      γ-relaxation.},
      cin          = {JCNS-1 / JCNS-FRM-II / ICS-1 / MLZ},
      ddc          = {530},
      cid          = {I:(DE-Juel1)JCNS-1-20110106 /
                      I:(DE-Juel1)JCNS-FRM-II-20110218 /
                      I:(DE-Juel1)ICS-1-20110106 / I:(DE-588b)4597118-3},
      pnm          = {551 - Functional Macromolecules and Complexes (POF3-551) /
                      6G4 - Jülich Centre for Neutron Research (JCNS) (POF3-623)
                      / 6215 - Soft Matter, Health and Life Sciences (POF3-621) /
                      6G15 - FRM II / MLZ (POF3-6G15)},
      pid          = {G:(DE-HGF)POF3-551 / G:(DE-HGF)POF3-6G4 /
                      G:(DE-HGF)POF3-6215 / G:(DE-HGF)POF3-6G15},
      experiment   = {EXP:(DE-MLZ)SPHERES-20140101 /
                      EXP:(DE-MLZ)TOF-TOF-20140101},
      typ          = {PUB:(DE-HGF)16},
      pubmed       = {pmid:32003764},
      UT           = {WOS:000518033500003},
      doi          = {10.1039/C9SM02487E},
      url          = {https://juser.fz-juelich.de/record/873957},
}