Order fluctuations in p-methoxybenzylidene p-n-butylaniline (MBBA): A proton NMR study

1 August 1976

journal article
Published by Canadian Science Publishing in Canadian Journal of Physics

Vol. 54 (15) , 1600-1605
https://doi.org/10.1139/p76-188

Abstract

Proton spin–lattice relaxation has been studied in the nematic phase of MBBA and MBBA-d₈ samples. The proton T₁ temperature dependence appears to come from the motions of side chains as in p-azoxyanisole. Order of magnitude calculations of T₁ based on order fluctuations agree with the ring proton T₁. The proton T₁ frequency dispersion of MBBA at 18 °C can be explained by order fluctuations plus a frequency dependent B term without any cutoff in the hydrodynamic modes.

Keywords

MBBA
PROTON
FREQUENCY
ORDER FLUCTUATIONS
METHOXYBENZYLIDENE
NMR
AZOXYANISOLE
HYDRODYNAMIC
LATTICE

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