Results 141 to 150 of about 1,375 (174)

Aminoxyl Radicals on the Silicon (001) Surface

The Journal of Physical Chemistry C, 2008
Aminoxyl radicals form a class of persistent radical species of which the TEMPO (2,2,6,6-tetramethyl-1-piperidinyloxy) molecule is perhaps the best known. They are known to be dangling bond scavengers and bind readily to the silicon (001) surface. However, the possibility of the aminoxyl group reacting dissociatively with the surface has been largely ...
Bennett, J., Warschkow, O., Marks, Nigel
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Reaction of indolinonic aminoxyls with nitric oxide

Journal of the Chemical Society, Perkin Transactions 2, 2001
2-Methyl-2-phenyl-3-oxoindolin-1-yloxyl and 2-methyl-2-phenyl-3-aryliminoindolin-1-yloxyl radicals react with nitric oxide in the absence and presence of oxygen to form both substituted and unsubstituted N-nitro and N-nitroso stable compounds as the main products, while mono and dinitro compounds are formed in minor yields.
E. DAMIANI, L. GRECI, RIZZOLI, Corrado
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Aminoxyl functionalized polythiophene: synthesis and electrochemical applications

Journal of Materials Chemistry, 1995
2,2,6,6-Tetramethyl-4-[4-(3-thienyl)butoxycarbonyl]piperidin-1-yloxyl and the corresponding N-hydroxytosylate salt have been prepared and polymerized in good yields by chemical and electrochemical methods. The chemically prepared tetramethylpiperidin-1-yloxyl (TEMPO)-substituted polythiophenes had electronic conductivities, when doped with iodine, of ...
Ahmed Iragi, Joe A. Crayston, John C. Walton, Andrew Harrison   +3 more
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Aminoxyl Spin Labels in Clinical Analysis

1992
Measuring the concentrations of paramagnetic species by EPR technique provides an opportunity to determine the concentrations of biologically active agents by spin labeling. In this regard a number of techniques have been proposed. Most of them are based on the principle of competition for the binding sites on the macromolecule which is between the ...
R. I. Zhdanov, A. M. Komarov, L. P. Kayushin   +2 more
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Structure and packing of aminoxyl and piperidinyl acrylamide monomers

Acta Crystallographica Section C Structural Chemistry, 2015
The closely related title compounds, 4-acrylamido-2,2,6,6-tetramethylpiperidine-1-oxyl, C12H21N2O2, (I), andN-(2,2,6,6-tetramethylpiperidin-4-yl)acrylamide monohydrate, C12H22N2O·H2O, (II), are important monomers in the preparation of redox-active polymers.
Shailesh K, Goswami, Lyall R, Hanton, C John, McAdam, Stephen C, Moratti, Jim, Simpson   +4 more
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Metal-Aminoxyl-Based Molecular Magnets

2007
The nitroxide radical is one example of a stable organic radical, and the oxygen atom of the nitroxide group exhibits weak basicity; therefore, it demonstrates coordinating ability with respect to transition metal ions. There are many π-conjugated oligo-nitroxides which have high-spin ground states.
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Quinolinic Aminoxyl Protects Albumin Against Peroxyl Radical Mediated Damage

Free Radical Research, 1994
A study of peroxyl radical-mediated bovine serum albumin oxidation in the presence of the quinolinic aminoxyl 1,2-dihydro-2,2-diphenyl-4-ethoxy-quinoline-1-oxyl (QAO) was carried out in order to test its efficiency as a protein antioxidant. Albumin oxidation was induced by the tert-butylhydroperoxide/PbO2 system.
F, Tanfani, P, Carloni, E, Damiani, L, Greci, M, Wozniak, D, Kulawiak, K, Jankowski, J, Kaczor, A, Matuszkiewics   +8 more
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Aminoxyl Radicals as MRI Contrast Agents

1992
Aminoxyl radicals have been suggested as potential MRI contrast agents for the last 10 years (1) but no clinically accepted examples for human applications have been approved to date. The following questions appear to need evaluation: (a) advantages of aminoxyl radicals as contrast agents in comparison to other chemical agents currently available; (b ...
Edward G. Janzen, Rheal A. Towner
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The Toxicity of Aminoxyl Radicals

1992
A crucial aspect of research on chemicals as potential medicines is the determination of their toxicity, which should be sufficiently low to justify pharmacological applications. First data on the toxicity of aminoxyl (nitroxyl) radicals was obtained while studying the antitumor activity of nitroxyl radicals [1] and from nitroxyl radical ...
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Indolinic and Quinolinic Aminoxyls as Biological Antioxidants

1997
On the basis of their structure, aminoxyls can be divided into two main groups;1 (i) stable aminoxyls with the unpaired electron mainly localized on the N-O· group such as 2,2,6,6-tetramethylpiperidine-1-oxyl or 2,2,5,5-pyrrolidine-1-oxyl, and (ii) relatively stable aminoxyls with the unpaired electron delocalized in the molecule through a conjugated π-
Lucedio Greci, Elisabetta Damiani, Patricia Carloni, Pierluigi Stipa   +3 more
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