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

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

scholarly journals Using a Battery to Synthesize New Vanadium Oxides

2017 ◽  
Vol 2 (20) ◽  
pp. 5800-5804 ◽  
Author(s):  
Marie Guignard ◽  
Claude Delmas
Keyword(s):  
Vanadium Oxides

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

Reactivities of m-xylene, phenol and benzene on vanadium oxides layered on TiO2 and ZrO2

1991 ◽  
Vol 45 (2) ◽  
pp. 265-269 ◽  
Author(s):  
F. Hatayama ◽  
T. Ohno ◽  
T. Maruoka ◽  
H. Miyata
Keyword(s):  
Vanadium Oxides
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