Both pulse and C.W. proton n.m.r, have been used for fmther study of the mobility of the hydrocarbon chains and headgroups in some smectic liquid crystalline phases. It is shown that dipolar broadening is responsible for the observed proton linewidths in these systems, + in the frequency range 10-40
N.m.r. study of cellulose-water systems: Water proton spin-lattice relaxation in the rotating reference frame
β Scribed by H Peemoeller; A.R Sharp
- Publisher
- Elsevier Science
- Year
- 1985
- Tongue
- English
- Weight
- 608 KB
- Volume
- 26
- Category
- Article
- ISSN
- 0032-3861
No coin nor oath required. For personal study only.
π SIMILAR VOLUMES
1H NMR spin-lattice relaxation times (T1) of the N-CH3 proton resonances of phosphocreatine (PCr) and creatine (Cr) in water solutions were obtained using the 1,3,3,1 pulse sequence. These T1 values were equivalent to those obtained in D2O and water using either the conventional inversion-recovery e
## Abstract Proton NMR relaxation measurements have been carried out in the mixed system of antiferroelectric (AFE) betaine phosphate (BP) and ferroelectric (FE) glycine phosphite (GPI), BP~__x__~GPI~(1β__x__)~, at 11.4 and 23.3 MHz from 300 to 100 K for __x__ = 0.3, 0.4, 0.5, 0.6, 0.7 and 0.8. The