ENDOR DETERMINATION OF PROTON HYPERFINE SPLITTING CONSTANTS OF AMINOXYL RADICALS FREQUENTLY USED IN SPIN-PROBE-SPIN-LABEL METHOD

1984 ◽  
Vol 13 (1) ◽  
pp. 83-86 ◽  
Author(s):  
Yashige Kotake ◽  
Keiji Kuwata
Keyword(s):  
Spin Label ◽  
Hyperfine Splitting ◽  
Spin Probe ◽  
Label Method ◽  
Probe Spin ◽  
Aminoxyl Radicals

The Spin-Probe-Spin-Label Method

Spin Labeling ◽  
1979 ◽  
pp. 71-113 ◽  
Author(s):  
JAMES S. HYDE ◽  
HAROLD M. SWARTZ ◽  
WILLIAM E. ANTHOLINE
Keyword(s):  
Spin Label ◽  
Spin Probe ◽  
Label Method ◽  
Probe Spin

SPIN-PROBE—SPIN-LABEL INVESTIGATIONS OF MODEL MEMBRANES

1978 ◽  
pp. 1253-1261 ◽  
Author(s):  
James S. Hyde ◽  
Carol A. Popp ◽  
S. Schreier
Keyword(s):  
Spin Label ◽  
Spin Probe ◽  
Model Membranes ◽  
Probe Spin

Solvent effects on the nitrogen and β-hydrogen hyperfine splitting constants of aminoxyl radicals obtained in spin trapping experiments

1982 ◽  
Vol 60 (21) ◽  
pp. 2725-2733 ◽  
Author(s):  
Edward G. Janzen ◽  
Gregory A. Coulter ◽  
Uwe M. Oehler ◽  
John P. Bergsma
Keyword(s):  
Linear Relationship ◽  
Solvent Effects ◽  
Hyperfine Splitting ◽  
Spin Trapping ◽  
Tert Butyl ◽  
Aminoxyl Radicals ◽  
Structural Significance

The nitrogen and β-hydrogen hyperfine splitting constants (hfsc) for phenyl, 4-nitrophenyl, 4-pyridyl, benzoyl, and trichloromethyl spin adducts of α-phenyl tert-butyl nitrone (PBN) as well as for the tert-butoxyl adduct of 5,5-dimethylpyrroline-N-oxide (DMPO) have been obtained as a function of solvent (30 solvents). A useful linear relationship between the β-H hfsc and the N-hfsc of each aminoxyl is found except for the benzoyl adduct of PBN. Some speculations regarding the structural significance of these correlations is presented.

Spin Label Study of Apomembranes and Purple Membranes

1993 ◽  
Vol 48 (5-6) ◽  
pp. 500-503
Author(s):  
Tzvetana R. Lazarova ◽  
Maya Y. Velitchkova
Keyword(s):  
Fatty Acids ◽  
Lipid Bilayer ◽  
Spin Label ◽  
Hyperfine Splitting ◽  
Esr Spectra ◽  
Spin Labels ◽  
Label Study ◽  
Splitting Parameter ◽  
Induced Changes ◽  
Purple Membranes

Abstract Three spin-labelled fatty acids were used to detect the dynamics of lipid bilayer of apomem branes and purple membranes. It was found that ESR spectra of spin labels bound to apo­ membranes showed a temperature-induced changes rather similar to those seen with purple membranes. At the same time, however, the values of hyperfine splitting parameter 2Tm were lower as compared to purple membranes. The results pointed out that the removal of the retinal from purple membranes affects the dynamics of lipid bilayer and apomembranes were more rigid structure than those of purple membranes.

THE USE OF SPIN LABEL METHOD IN THE PHARMACOLOGICAL INVESTIGATIONS

Abstracts ◽  
1977 ◽  
pp. 581
Author(s):  
E.A. Rudzit ◽  
E.I. Gorenburgova ◽  
N.V. Kharakhonioheva ◽  
E.F. Lavretskaja ◽  
U.Sh. Moshkowski ◽  
...  
Keyword(s):  
Spin Label ◽  
Label Method

Some EPR spin probe and spin label studies of polymer systems

1996 ◽  
Vol 10 (1-3) ◽  
pp. 413-429 ◽  
Author(s):  
A. M. Wasserman ◽  
T. N. Khazanovich ◽  
V. A. Kasaikin
Keyword(s):  
Spin Label ◽  
Spin Probe ◽  
Polymer Systems

Synthesis of a Dihydroxy-Substituted Aminoxyl Spin Label and its Crown Ether and Cyclic Diester Derivatives

1993 ◽  
Vol 48 (4) ◽  
pp. 505-510 ◽  
Author(s):  
Yong-Kang Zhang ◽  
De-Kang Shen
Keyword(s):  
Crown Ether ◽  
Intramolecular Cyclization ◽  
Spin Label ◽  
Cyclic Ether ◽  
Synthetic Approach ◽  
Aminoxyl Radicals

A novel dihydroxy-substituted aminoxyl spin label, 4-hydroxy-3-(3'-hydroxypropyl)-2,2,6,6-tetramethylpiperidine-1-oxy (5), has been prepared. From this aminoxyl radical, a spin-labeled crown ether, 16,16,18,18-tetramethyl-2,5,8,11-tetraoxa-17-azabicyclo[ 13,4,0]-nonadecane-17-oxy (12), and a spin-labeled cyclic diester, 16,16,18,18-tetramethyl-3,10-dioxo-2,5,8,11-tetraoxa-17-azabicyclo[13,4,o]nonadecane-17-oxy (13), have been acquired. Other four new stable aminoxyl radicals 8,9,10, and 11 have also been obtained within the synthetic approach. It has been demonstrated that the cyclic ether compound (7) is generated by the reduction of its corresponding lactone which is sidely derived from the oxo-reduced species of 3 by intramolecular cyclization.

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