Nonisothermal relaxation of photosensitive paramagnetic centers in A2B6 compounds

1974 ◽  
Vol 21 (4) ◽  
pp. 1338-1341
Author(s):  
F. F. Kodzhespirov ◽  
M. F. Bulanyi ◽  
V. I. Volozov
Keyword(s):  
Paramagnetic Centers

ELECTRON SPIN-LATTICE RELAXATION : A TOOL FOR THE INVESTIGATION OF PARAMAGNETIC CENTERS IN AMORPHOUS SEMI-CONDUCTORS

1981 ◽  
Vol 42 (C4) ◽  
pp. C4-1001-C4-1004
Author(s):  
A. Deville ◽  
B. Gaillard ◽  
C. Blanchard ◽  
J. Livage
Keyword(s):  
Electron Spin ◽  
Lattice Relaxation ◽  
Spin Lattice Relaxation ◽  
Paramagnetic Centers ◽  
Spin Lattice

Formation of different types of paramagnetic centers in the alanine dosimeters exposed to alpha and gamma radiation - Study by EPR spectroscopy

2020 ◽  
pp. 106467
Author(s):  
A.I. Ivannikov ◽  
A.M. Khailov ◽  
S.P. Orlenko ◽  
V.F. Stepanenko ◽  
F. Trompier ◽  
...  
Keyword(s):  
Gamma Radiation ◽  
Epr Spectroscopy ◽  
Paramagnetic Centers ◽  
Radiation Study ◽  
Different Types

Photoinduced Paramagnetic Centers in Nanocomposites Formed by Titanium Dioxide and Myristic Acid

2021 ◽  
Vol 125 (12) ◽  
pp. 6773-6786
Author(s):  
Claudio José Magon ◽  
Harold Lozano Zarto ◽  
José Pedro Donoso ◽  
Hellmut Eckert ◽  
Sindy Devis ◽  
...  
Keyword(s):  
Titanium Dioxide ◽  
Myristic Acid ◽  
Paramagnetic Centers

Jellyfish-like few-layer graphene nanoflakes: high paramagnetic response alongside increased interlayer interaction

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Alexander Ulyanov ◽  
Dmitrii Stolbov ◽  
Serguei Savilov
Keyword(s):  
Photoelectron Spectroscopy ◽  
High Sensitivity ◽  
Paramagnetic Centers ◽  
Interlayer Interaction ◽  
Paramagnetic Resonance ◽  
X Ray ◽  
Graphene Nanoflakes ◽  
Few Layer Graphene ◽  
Electron Paramagnetic ◽  
Hydrocarbon Pyrolysis

Abstract Jellyfish-like graphene nanoflakes (GNF), prepared by hydrocarbon pyrolysis, are studied with electron paramagnetic resonance (EPR) method. The results are supported by X-ray photoelectron spectroscopy (XPS) data. Oxidized (GNFox) and N-doped oxidized (N-GNFox) flakes exhibit an extremely high EPR response associated with a large interlayer interaction which is caused by the structure of nanoflakes and layer edges reached by oxygen. The GNFox and N-GNFox provide the localized and mobile paramagnetic centers which are silent in the pristine (GNF p ) and N-doped (N-GNF) samples. The change in the relative intensity of the line corresponding to delocalized electrons is parallel with the number of radicals in the quaternary N-group. The environment of localized and mobile electrons is different. The results can be important in GNF synthesis and for explanation of their features in applications, especially, in devices with high sensitivity to weak electromagnetic field.

scholarly journals Studies of transmembrane peptides by pulse dipolar spectroscopy with semi-rigid TOPP spin labels

2021 ◽  
Author(s):  
Igor Tkach ◽  
Ulf Diederichsen ◽  
Marina Bennati
Keyword(s):  
Molecular Level ◽  
Dipolar Interaction ◽  
Spin Labels ◽  
Paramagnetic Centers ◽  
Structural Adaptation ◽  
Paramagnetic Resonance ◽  
Transmembrane Peptides ◽  
Distance Distributions ◽  
Lipid Environment ◽  
Electron Paramagnetic

AbstractElectron paramagnetic resonance (EPR)-based pulsed dipolar spectroscopy measures the dipolar interaction between paramagnetic centers that are separated by distances in the range of about 1.5–10 nm. Its application to transmembrane (TM) peptides in combination with modern spin labelling techniques provides a valuable tool to study peptide-to-lipid interactions at a molecular level, which permits access to key parameters characterizing the structural adaptation of model peptides incorporated in natural membranes. In this mini-review, we summarize our approach for distance and orientation measurements in lipid environment using novel semi-rigid TOPP [4-(3,3,5,5-tetramethyl-2,6-dioxo-4-oxylpiperazin-1-yl)-L-phenylglycine] labels specifically designed for incorporation in TM peptides. TOPP labels can report single peak distance distributions with sub-angstrom resolution, thus offering new capabilities for a variety of TM peptide investigations, such as monitoring of various helix conformations or measuring of tilt angles in membranes. Graphical Abstract

CO and NH3 sensor properties and paramagnetic centers of nanocrystalline SnO2 modified by Pd and Ru

2011 ◽  
Vol 520 (3) ◽  
pp. 904-908 ◽  
Author(s):  
A.V. Marikutsa ◽  
M.N. Rumyantseva ◽  
A.M. Gaskov ◽  
E.A. Konstantinova ◽  
D.A. Grishina ◽  
...  
Keyword(s):  
Paramagnetic Centers ◽  
Sensor Properties ◽  
Nh3 Sensor

Using dysprosium complexes to probe the nitrogenase paramagnetic centers

Biochemistry ◽  
1993 ◽  
Vol 32 (23) ◽  
pp. 6058-6064 ◽  
Author(s):  
Melinda E. Oliver ◽  
Brian J. Hales
Keyword(s):  
Paramagnetic Centers

Paramagnetic Centers Created Under Mechanochemical Treatment of Mixed Molybdenum-Vanadium Oxides

2016 ◽  
Vol 47 (6) ◽  
pp. 575-588 ◽  
Author(s):  
I. V. Kolbanev ◽  
E. N. Degtyarev ◽  
A. N. Streletskii ◽  
A. I. Kokorin
Keyword(s):  
Vanadium Oxides ◽  
Mechanochemical Treatment ◽  
Paramagnetic Centers

ESR Study of Paramagnetic Centers in Irradiated Phosphate Glasses

1994 ◽  
Vol 1-2 ◽  
pp. 421-426 ◽  
Author(s):  
M.E. Archidi ◽  
M. El Haddad ◽  
A. Nadiri ◽  
R. Berger
Keyword(s):  
Phosphate Glasses ◽  
Paramagnetic Centers

Local geometry for two Mn2+ paramagnetic centers in α-LiIO3 crystal

1999 ◽  
Vol 271 (1-4) ◽  
pp. 252-255 ◽  
Author(s):  
Wen-Chen Zheng ◽  
Shao-Yi Wu
Keyword(s):  
Local Geometry ◽  
Paramagnetic Centers
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