Relevant bibliographies by topics / Shift nitroxides

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  1. Journal articles
  2. Dissertations / Theses

Academic literature on the topic 'Shift nitroxides'

Author: Grafiati
Published: 25 May 2024
Last updated: 31 July 2025

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Journal articles on the topic "Shift nitroxides"

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Sweger, Sarah R., Vasyl P. Denysenkov, Lutz Maibaum, Thomas F. Prisner, and Stefan Stoll. "The effect of spin polarization on double electron–electron resonance (DEER) spectroscopy." Magnetic Resonance 3, no. 1 (2022): 101–10. http://dx.doi.org/10.5194/mr-3-101-2022.

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Abstract. Double electron–electron resonance (DEER) spectroscopy measures the distribution of distances between two electron spins in the nanometer range, often on doubly spin-labeled proteins, via the modulation of a refocused spin echo by the dipolar interaction between the spins. DEER is commonly conducted under conditions where the polarization of the spins is small. Here, we examine the DEER signal under conditions of high spin polarization, thermally obtainable at low temperatures and high magnetic fields, and show that the signal acquires a polarization-dependent out-of-phase component
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Maryunina, Kseniya Yu, Xiao Zhang, Sadafumi Nishihara, et al. "A heterospin pressure sensor." Journal of Materials Chemistry C 3, no. 30 (2015): 7788–91. http://dx.doi.org/10.1039/c5tc01005e.

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Bonesteel, Jo-Anne K., Babul Borah, and Richard D. Bates. "Effects of nitroxide free radicals on proton donor chemical shifts." Journal of Magnetic Resonance (1969) 98, no. 3 (1992): 475–82. http://dx.doi.org/10.1016/0022-2364(92)90002-o.

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4

Kirste, B. "EPR and ENDOR Investigations of a Cholestane Spin Probe in Liquid Crystals." Zeitschrift für Naturforschung A 42, no. 11 (1987): 1296–304. http://dx.doi.org/10.1515/zna-1987-1112.

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A detailed ENDOR study of anisotropic proton hyperfine shifts in the nitroxide spin probe 3-doxylcholestane (CSL) in liquid-crystalline solution is described. The data are interpreted by means of theoretically calculated proton hyperfine tensors (McConnell-Strathdee-Derbyshire treatment), providing an independent check of the ordering matrix. The orientational order and the dynamic behavior of the nematic and smectic phases of the liquid crystals (40,6), (50,6), and 8CB are investigated by EPR using CSL and phenalenyl as spin probes.
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Maupu, Alexandre, Yara Kanawati, Adrien Métafiot, and Milan Maric. "Ethylene Glycol Dicyclopentenyl (Meth)Acrylate Homo and Block Copolymers via Nitroxide Mediated Polymerization." Materials 12, no. 9 (2019): 1547. http://dx.doi.org/10.3390/ma12091547.

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Nitroxide-mediated polymerization (NMP), (homo and block copolymerization with styrene (S) and butyl methacrylate/S) of ethylene glycol dicyclopentenyl ether (meth)acrylates (EGDEA and EGDEMA) was studied using BlocBuilder alkoxyamines. EGDEA homopolymerization was not well-controlled, independent of temperature (90–120 °C), or additional free nitroxide (0–10 mol%) used. Number average molecular weights (Mn) achieved for poly(EGDEA) were 4.0–9.5 kg mol−1 and were accompanied by high dispersity (Ð = Mw/Mn = 1.62–2.09). Re-initiation and chain extension of the poly(EGDEA) chains with styrene (S)
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Bales, Barney L., Francis L. Harris, Mirna Peric, and Miroslav Peric. "Electron Paramagnetic Resonance Line Shifts and Line Shape Changes Due to Spin Exchange of Nitroxide Free Radicals in Liquids. 7. Singly Charged Surfactant Nitroxide." Journal of Physical Chemistry A 113, no. 33 (2009): 9295–303. http://dx.doi.org/10.1021/jp905335r.

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7

Anžlovar, Alojz, Mohor Mihelčič, Iztok Švab, David Pahovnik, and Ema Žagar. "Dynamic Crosslinking of LDPE by Nitroxide Radical Coupling of a Dicyclopentadiene Dicarboxylic Acid and Its Dynamic Properties." Polymers 17, no. 11 (2025): 1536. https://doi.org/10.3390/polym17111536.

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LDPE was crosslinked with novel dynamic or conventional crosslinking agents during melt processing. Both crosslinkers were synthesized by the esterification of Thiele’s acid or adipic acid with 4-hydroxy-TEMPO. 1H-NMR showed that a temperature of 170 °C and a reaction time of 24 min are required for a successful crosslinking. The concentrations of crosslinking agents were 1.45, 2.9, and 5.8 mol%. Conventionally crosslinked LDPEs show a decrease in soluble content in hot xylene with increased crosslinker concentrations, while dynamically crosslinked LDPEs show no change after thermal treatment,
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Romanenko, G. V., S. E. Tolstikov, E. V. Tretyakov, S. V. Fokin, V. N. Ikorskii, and V. I. Ovcharenko. "Shift of stereochemical nonrigidity from coordination units to polymethylene fragments in heterospin copper(II) hexafluoroacetylacetonate complexes with nitronyl nitroxide biradicals." Russian Chemical Bulletin 56, no. 9 (2007): 1795–804. http://dx.doi.org/10.1007/s11172-007-0279-6.

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Bales, Barney L., and Miroslav Peric. "EPR Line Shifts and Line Shape Changes Due to Spin Exchange of Nitroxide Free Radicals in Liquids." Journal of Physical Chemistry B 101, no. 43 (1997): 8707–16. http://dx.doi.org/10.1021/jp970995g.

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10

Sarkar, Riddhiman, Arnaud Comment, Paul R. Vasos, et al. "Proton NMR of (15)N-choline metabolites enhanced by dynamic nuclear polarization." Journal of the American Chemical Society 131, no. 44 (2009): 16014–15. https://doi.org/10.1021/ja9021304.

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International audience ; Chemical shifts of protons can report on metabolic transformations such as the conversion of choline to phosphocholine. To follow such processes in vivo, magnetization can be enhanced by dynamic nuclear polarization (DNP). We have hyperpolarized in this manner nitrogen-15 spins in (15)N-labeled choline up to 3.3% by irradiating the 94 GHz electron spin resonance of admixed TEMPO nitroxide radicals in a magnetic field of 3.35 T during ca. 3 h at 1.2 K. The sample was subsequently transferred to a high-resolution magnet, and the enhanced polarization was converted from (
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Dissertations / Theses on the topic "Shift nitroxides"

1

Vaiedelich, Enzo. "Les agents de contraste radicalaires pour l'IRM de demain." Electronic Thesis or Diss., Aix-Marseille, 2023. http://www.theses.fr/2023AIXM0049.

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Ce travail présente la synthèse de nouvelles sondes radicalaires sensibles à l'activité enzymatique. Ces nitroxydes à shift sont synthétisés dans le but de nouvelles méthodes de détection de l'activité enzymatique par RPE. De plus, ces sondes permettent une application en IRM-PDN en tant que nouveaux agents de contraste pour l'IRM et ainsi la mesure in-vivo de l'activité enzymatique. De ce fait, elles pourraient un jour remplacer les agents de contraste actuels, en grande majorité fait à partir de gadolinium. La première partie est consacrée à l'état de l'art dans le domaine des agents de cont
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Jacoutot, Samuel. "Synthèse de sondes nitroxydes pour la détection de l’activité enzymatique : application à la spectroscopie par RPE et à l'IRM rehaussée par effet Overhauser." Electronic Thesis or Diss., Aix-Marseille, 2020. http://www.theses.fr/2020AIXM0489.

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Ce travail présente la synthèse de nouvelles sondes radicalaires sensibles à l’activité enzymatique. Ces sondes, appelées «nitroxydes à shift», sont synthétisées dans le but de développer des nouvelles méthodes de détection de l’activité enzymatique par RPE, mais également pour une application en diagnostic par IRMO. Ces nitroxydes pourraient alors constituer une alternative intéressante aux agents de constrates à base de gadolinium. La première partie est consacrée à l’optimisation de la voie de synthèse du nitroxyde à shift libre, intermédiaire de synthèse crucial. Le rendement a donc été am
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Journal articles
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