EPJ Web of Conferences (Jan 2015)

Quasi- and inelastic neutron scattering to investigate the molecular dynamics of discotic molecules in the bulk

  • Krause Christina,
  • Zorn Reiner,
  • Frick Bernhard,
  • Schönhals Andreas

DOI
https://doi.org/10.1051/epjconf/20158302017
Journal volume & issue
Vol. 83
p. 02017

Abstract

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In- and quasielastic neutron scattering is employed to investigate both the vibrational density of states and the molecular dynamics of two homologous discotic liquid crystals (DLC) with different length of the alkyl side chain based on a triphenylene derivate. For both compounds characteristic low frequency excess contributions to the vibrational density of states are found. Therefore it is concluded that these liquid crystals show a glass-like behaviour. Elastic scans further show that in these materials a rich molecular dynamics takes place.