13C Spin-Lattice Relaxation Times in Liquid Crystalline p,p′-Azoxyanisole
- 1 May 1977
- journal article
- research article
- Published by Oxford University Press (OUP) in Bulletin of the Chemical Society of Japan
- Vol. 50 (5) , 1295-1297
- https://doi.org/10.1246/bcsj.50.1295
Abstract
The 13C spin-lattice relaxation time T1 in the liquid crystalline compound p,p′-azoxyanisole; (PAA; 4,4′-dimethoxyazoxybenzene) was observed in the nematic and isotropic liquid phases. From the obtained T1’s of the ring and the methyl carbons, the anisotropic rotational diffusion constants were determined. It is concluded that the rotational reorientation around the molecular axis is faster by an order of 103 than the rotational motion around the axis perpendicular to the molecular axis in the nematic and isotropic liquid states.Keywords
This publication has 16 references indexed in Scilit:
- Proton spin–lattice relaxation in selectively deuterated p,p′-azoxyanisolesThe Journal of Chemical Physics, 1977
- Frequency dependence of proton relaxation in liquid crystalsThe Journal of Chemical Physics, 1976
- Deuteron relaxation in liquid crystals: Di-n-alkoxyazoxybenzenes, n=1,7The Journal of Chemical Physics, 1975
- Untersuchungen an Chinolacetaten, IV./ Quinol Acetates, IVZeitschrift für Naturforschung B, 1975
- Effect of phase transitions on carbon-13 nuclear magnetic resonance spectra in p-azoxydianisole, a nematic liquid crystalJournal of the American Chemical Society, 1974
- Temperature-dependent study of carbon-13 spin-lattice relaxation times in para -azoxyanisole-A nematic liquid crystalThe Journal of Chemical Physics, 1974
- Nuclear relaxation in liquid crystalsAdvances in Molecular Relaxation Processes, 1972
- Carbon-13 Relaxation Time Measurements in Formic AcidThe Journal of Chemical Physics, 1971
- Effects of Order and Fluctuations on theNMR in a Liquid CrystalPhysical Review Letters, 1970
- Effect of Internal Rotation on Angular Correlation FunctionsThe Journal of Chemical Physics, 1967