Results 81 to 90 of about 1,973 (118)

A Profluorescent Azaphenalene Nitroxide for Nitroxide-Mediated Polymerization1

Australian Journal of Chemistry, 2011
A novel nitroxide-mediated polymerization (NMP) control agent; 1,1,3,3-tetramethyl-2,3-dihydro-2-azaphenalen-2-yloxyl (TMAO), was used in the free-radical polymerization of styrene. The conversion of styrene during NMP was studied using FT-Raman spectroscopy and the effectiveness of TMAO as a NMP control agent was assessed by GPC analysis.
John M. Colwell, James P. Blinco, Courtney Hulbert, Kathryn E. Fairfull-Smith, Steven E. Bottle   +4 more
openaire   +1 more source

Fluorinated nitroxide radicals

Mendeleev Communications, 2006
AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Alexander I. Kokorin, Igor A. Grigor'ev
openaire   +1 more source

Identification of Nitroxide Radioprotectors

Radiation Research, 1992
The nitroxide Tempol, a stable free radical, has recently been shown to protect mammalian cells against several forms of oxidative stress including radiation-induced cytotoxicity. To extend this observation, six additional water-soluble nitroxides with different structural features were evaluated for potential radioprotective properties using Chinese ...
S M, Hahn, L, Wilson, C M, Krishna, J, Liebmann, W, DeGraff, J, Gamson, A, Samuni, D, Venzon, J B, Mitchell   +8 more
openaire   +2 more sources

Pyrimidinyl Nitronyl Nitroxides

Chemistry – A European Journal, 2006
AbstractThe chemistry of 2,2,4,4‐substituted pentane derivatives has been investigated with the aim of providing a flexible and versatile synthetic route to pyrimidinyl nitronyl nitroxides, in which the bis‐N‐oxy fragment is incorporated in a six‐membered ring.
Peter, Brough, Jacques, Pécaut, André, Rassat, Paul, Rey   +3 more
openaire   +2 more sources

ChemInform Abstract: NITROXIDES. LXXXV. AZETIDINE NITROXIDES

Chemischer Informationsdienst, 1978
AbstractDie auf bekanntem Wege zugängliche Verbindung (III) ergibt mit Allylmagnesiumbromid in Diethylether die Diallylverbindung (IV), die mit m‐Chlorperbenzoesäure in Diethylether zum Azetidinoxyl (V) oxidiert wird.
J.‐C. ESPIE, R. RAMASSEUL, A. RASSAT
openaire   +1 more source

“Conjugated” nitronyl-nitroxide and imino-nitroxide biradicals

J. Chem. Soc. D, 1969
The new biradicals (3), (5) and (6) have low lying triplet states having perpendicular conformations in solution.
Edwin F. Ullman, D. G. B. Boocock
openaire   +1 more source

Superoxide Reaction with Nitroxides

Free Radical Research Communications, 1990
Stable, free radical nitroxides are commonly used ESR spectroscopy tools. However, it has recently been found that ESR observable signal from 5-membered ring spin-adducts or stable label nitroxides is lost or diminished by reaction with superoxide. A similar radical-radical annihilation was not found for six membered ring nitroxide radicals. To discern
A, Samuni, C M, Krishna, J B, Mitchell, C R, Collins, A, Russo   +4 more
openaire   +2 more sources

Fluorophore–Nitroxide (Profluorescent Nitroxide) Probes

2020
Over the last decades, scientists have faced growing requirements in novel methods of fast and sensitive analysis of antioxidant status of biological systems, redox probing and radical trapping, biological molecules’ analysis, investigation of molecular dynamics, and convenient models for studies of photophysical and photochemical processes.
openaire   +1 more source

Conjugated nitroxides

Russian Chemical Reviews, 2022
In recent years, research dealing with organic paramagnetic compounds such as stable radicals and high-spin systems has been focused on applied aspects. Several key trends have formed in the application and, hence, in the function-oriented synthesis of organic radicals and polyradicals.
E. V. Tretyakov, V. I. Ovcharenko, A. O. Terent'ev, I. B. Krylov, T. V. Magdesieva, D. G. Mazhukin, N. P. Gritsan   +6 more
openaire   +1 more source

On the Photomagnetism of Nitronyl Nitroxide, Imino Nitroxide, and Verdazyl-Substituted Azobenzene

The Journal of Physical Chemistry A, 2012
The cis- and trans-azobenzenes are known as photochromic isomers with the trans- converting into the cis-form and vice versa upon irradiation with specific wavelengths. We have quantum chemically investigated the cis- and trans-forms of substituted azobenzene diradicals, with two nitronyl nitroxides, imino nitoxides, or verdazyls at para positions and ...
DATTA, SN, PAL, AK, HANSDA, S, LATIF, IA
openaire   +3 more sources