The physical basis for the magnetic field dependence of proton spin-lattice relaxation rates in proteins

2001 ◽  
Vol 115 (23) ◽  
pp. 10964-10974 ◽  
Author(s):  
Jean-Pierre Korb ◽  
Robert G. Bryant
Keyword(s):  
Magnetic Field ◽  
Field Dependence ◽  
Magnetic Field Dependence ◽  
Lattice Relaxation ◽  
Proton Spin ◽  
Physical Basis ◽  
Spin Lattice Relaxation ◽  
Relaxation Rates ◽  
Spin Lattice ◽  
The Magnetic Field

Magnetic-field dependence of planar copper and oxygen spin-lattice relaxation rates in the superconducting state ofYBa2Cu3O7

1993 ◽  
Vol 47 (14) ◽  
pp. 9155-9157 ◽  
Author(s):  
J. A. Martindale ◽  
S. E. Barrett ◽  
K. E. O’Hara ◽  
C. P. Slichter ◽  
W. C. Lee ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Field Dependence ◽  
Superconducting State ◽  
Magnetic Field Dependence ◽  
Lattice Relaxation ◽  
Spin Lattice Relaxation ◽  
Relaxation Rates ◽  
Spin Lattice

Proton Spin-Relaxation Induced by Localized Spin-Dynamical Coupling in Proteins And in Other Imperfectly Packed Solids

2000 ◽  
Vol 651 ◽  
Author(s):  
J.-P. Korb ◽  
A. Van-Quynh ◽  
R. G. Bryant
Keyword(s):  
Magnetic Field ◽  
Field Dependence ◽  
Magnetic Field Dependence ◽  
Dipolar Coupling ◽  
Biological Tissues ◽  
Proton Spin ◽  
Spin Lattice Relaxation ◽  
Relaxation Rates ◽  
Polymer Backbone ◽  
The Magnetic Field

AbstractThe magnetic field dependence of 1H spin lattice relaxation rates in noncrystalline macromolecular solids including engineering polymers, proteins, and biological tissues is described by a power law, 1/T1 = Aω0-b, where ω0 is the Larmor frequency, A and b are constants. We show that the magnetic field dependence of the proton 1/T1 may be quantitatively related to structural fluctuations along the backbone that modulate proton-proton dipolar couplings. The parameters A and b are related to the dipolar coupling strength, the energy for the highest vibrational frequency in the polymer backbone, and the fractal dimensionality of the proton spatial distribution.

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