Incoherent quasielastic neutron scattering study of molecular dynamics of 4-n-octyl-4'-cyanobiphenyl.
We report incoherent quasielastic neutron scattering experiments on the thermotropic liquid crystal 4-n-octyl-4'-cyanobiphenyl. The combination of time-of-flight and backscattering data allows analysis of the intermediate scattering function over about three decades of relaxation times. Translational diffusion and uniaxial molecular rotations are clearly identified as the major relaxation processes in, respectively, the nanosecond and picosecond time scales.
Lefort
Ronan
R
Institut de Physique, UMR-CNRS 6251, Campus de Beaulieu, 35042 Rennes Cedex, France. ronan.lefort@univ-rennes1.fr
Morineau
Denis
D
Guégan
Régis
R
Ecolivet
Claude
C
Guendouz
Mohammed
M
Zanotti
Jean-Marc
JM
Frick
Bernhard
B
D001713:Biphenyl Compounds / Q000737:chemistry*; D003198:Computer Simulation; D004058:Diffusion; D008956:Models, Chemical; D009502:Neutrons; D009570:Nitriles / Q000737:chemistry*; D011789:Quantum Theory; D012399:Rotation; D012542:Scattering, Radiation; D013696:Temperature; D013997:Time Factors
C495061:4'-octyl-4-cyanobiphenyl; D001713:Biphenyl Compounds; D009570:Nitriles