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

被引：2
|
作者：
Krause, Christina [1 ]
Zorn, Reiner [2 ]
Frick, Bernhard [3 ]
Schoenhals, Andreas [1 ]
机构：
[1] BAM, Fed Inst Mat Res & Testing, D-12205 Berlin, Germany
[2] Julich Ctr Neutron Sci, D-52425 Julich, Germany
[3] Inst Laue Langevin, F-38000 Grenoble, France
来源：
QENS/WINS 2014 - 11TH INTERNATIONAL CONFERENCE ON QUASIELASTIC NEUTRON SCATTERING AND 6TH INTERNATIONAL WORKSHOP ON INELASTIC NEUTRON SPECTROMETERS | 2015年 / 83卷
关键词：
DENSITY-OF-STATES; LIQUID-CRYSTALS; EXCITATIONS; SYSTEMS;
D O I：
10.1051/epjconf/20158302017
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
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.
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页数：4
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