Results 11 to 20 of about 14,461 (232)

Oxidative Desulfurization Activity of NIT Nitroxide Radical Modified Metallophthalocyanine [PDF]

Molecules, 2022
In the present study, metallophthalocyanines were modified with NIT nitroxide radicals through chemical bonds to prepare a series of metallophthalocyanines–NIT catalysts (MPcTcCl8-NIT, M=Mn2+, Fe2+, Co2+, Ni2+, Cu2+ and Zn2+) applied for oxidative ...
Min Tian, Yang He, Gai Zhang, Haibo Wang
doaj   +2 more sources

Synthesis of tricyclic fused pyrrolidine nitroxides from 2-alkynylpyrrolidine-1-oxyls [PDF]

Beilstein Journal of Organic Chemistry
Rotational correlation time is a key parameter for organic radical contrast agents (ORCA) for magnetic resonance imaging (MRI). Design of polycyclic systems with incorporated nitroxide moieties in which rotation of the radical separately from the ...
Mark M. Gulman, Yuliya F. Polienko, Sofia Yu. Trakhininа, Yuri V. Gatilov, Tatyana V. Rybalova, Sergey A. Dobrynin, Igor A. Kirilyuk   +6 more
doaj   +2 more sources

Towards Metabolic Organic Radical Contrast Agents (mORCAs) for Magnetic Resonance Imaging [PDF]

Molecules
We report two conjugates of gem-diethyl pyrroline nitroxide radicals with D-mannosamine as potential metabolic organic radical contrast agents, mORCAs, circumventing the need for biorthogonal reactions.
Shuyang Zhang, Sabina Dhakal, Evan Curtis, Hunter Miller, Joseph T. Paletta, Connor Gee, Suchada Rajca, Forrest Kievit, Andrzej Rajca   +8 more
doaj   +2 more sources

Synthesis of Nitronyl Nitroxide Radical-Modified Multi-Walled Carbon Nanotubes and Oxidative Desulfurization in Fuel [PDF]

Molecules
Novel and highly stable nitronyl nitroxide radical (NIT) derivatives were synthesized and coated on the surface of multi-walled carbon nanotubes (MWCNTs) to improve their desulfurization performance.
Min Tian, Haokang Huang, Gai Zhang, Haibo Wang   +3 more
doaj   +2 more sources

Pressure Sensitivity of UiO-66 Framework with Encapsulated Spin Probe: A Molecular Dynamics Study [PDF]

Molecules
Probes sensitive to mechanical stress are in high demand for analyzing pressure distributions in materials. Metal–organic frameworks (MOFs) are especially promising for designing pressure sensors due to their structural tunability.
Dmitry V. Alimov, Artem S. Poryvaev, Matvey V. Fedin   +2 more
doaj   +2 more sources

One-dimensional lanthanide chain bridged by nitronyl nitroxide radical ligand: structure and magnetic properties [PDF]

E3S Web of Conferences, 2020
In order to synthesize the molecular magnetic material, the complex{Nd(hfac)3(NIT-5MeThien)}n(NIT-5MeThien=2-(5-Methyl-2ˊ-thienyl)-5--4,4,5,5-tetramethyl-imidazoline-1-oxyl-3-oxide) has been synthesized by the reaction using radical ligand and Nd(hfac)3 ...
Dong Hui Yang, Zhu Me
doaj   +1 more source

Unraveling Charging and Discharging Processes in Organic Radical-Based Electrodes: A Hierarchical Molecular and Quantum Mechanical Approach. [PDF]

ChemSusChem
Charge transfer processes are investigated in p‐type organic electrode materials utilizing stable organic radicals incorporated in a conjugated backbone. Molecular dynamics simulations and time‐dependent density functional theory calculations allow us to evaluate charge transfer states as well as the underlying structure–property relationships. Organic
Zens C, Shillito GE, Friebe C, Kupfer S.
europepmc   +2 more sources

Human Serum Albumin Labelled with Sterically-Hindered Nitroxides as Potential MRI Contrast Agents

Molecules, 2020
Four albumin-nitroxide conjugates were prepared and tested as metal-free organic radical contrast agents (ORCAs) for magnetic resonance imaging (MRI).
Sergey Dobrynin, Sergei Kutseikin, Denis Morozov, Olesya Krumkacheva, Anna Spitsyna, Yurii Gatilov, Vladimir Silnikov, Goran Angelovski, Michael K. Bowman, Igor Kirilyuk, Alexey Chubarov   +10 more
doaj   +1 more source

Nitroxide-Mediated Radical Polymerization of Styrene Initiated from the Surface of Titanium Oxide Nanoparticles [PDF]

Journal of Nanostructures, 2016
Titanium dioxide (TiO2) nanoparticles, with an average size of about 45 nm, were encapsulated by polystyrene using in situ nitroxide mediated radical polymerization   in the presence of 3-aminopropyl triethoxy silane (APTES) as a coupling agent and 2, 2,
M. Abbasian, N. Khakpour Aali
doaj   +1 more source

Fluorinated Organic Paramagnetic Building Blocks for Cross-Coupling Reactions

Molecules, 2020
New stable polyfluorinated nitroxide radicals for use in cross-coupling reactions, namely, N-tert-butyl-N-oxyamino-2,3,5,6-tetrafluoro-4-iodobenzene and N-tert-butyl-N-oxyamino-2,3,5,6-tetrafluoro-4-ethynylbenzene, were prepared from perfluoroiodobenzene.
Larisa V. Politanskaya, Pavel A. Fedyushin, Tatyana V. Rybalova, Artem S. Bogomyakov, Nargiz B. Asanbaeva, Evgeny V. Tretyakov   +5 more
doaj   +1 more source