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Aminoxyl

The Experts below are selected from a list of 1215 Experts worldwide ranked by ideXlab platform

Shinichi Nakatsuji – 1st expert on this subject based on the ideXlab platform

  • novel purely organic conductor with an Aminoxyl radical α bedt ttf 2 po conhch2so3 2h2o po 2 2 5 5 tetramethyl 3 pyrrolin 1 oxyl free radical
    Chemistry Letters, 2008
    Co-Authors: Hiroki Akutsu, Shinji Yamashita, Junichi Yamada, Shinichi Nakatsuji, Scott S Turner

    Abstract:

    A novel bis(ethylenedithio)tetrathiafulvalene (BEDT-TTF)-based salt with an Aminoxyl radical 2,2,5,5-tetramethyl-3-pyrrolin-1-oxyl (PO) has been prepared. The salt has α-type 2-D conducting sheets and is a semiconductor with ρ = 26 Ω·cm and E = 0.31 eV. The temperature dependence of the magnetic susceptibility suggests that both the Aminoxyl radical and the BEDT-TTF layer have local spin moments at room temperature. Copyright © 2008 The Chemical Society of Japan.

  • Novel Purely Organic Conductor with an Aminoxyl Radical, α-(BEDT-TTF)2(PO–CONHCH2SO3)·2H2O (PO = 2,2,5,5-Tetramethyl-3-pyrrolin-1-oxyl Free Radical)
    Chemistry Letters, 2008
    Co-Authors: Hiroki Akutsu, Shinji Yamashita, Junichi Yamada, Shinichi Nakatsuji, Scott S Turner

    Abstract:

    A novel bis(ethylenedithio)tetrathiafulvalene (BEDT-TTF)-based salt with an Aminoxyl radical 2,2,5,5-tetramethyl-3-pyrrolin-1-oxyl (PO) has been prepared. The salt has α-type 2-D conducting sheets and is a semiconductor with ρ = 26 Ω·cm and E = 0.31 eV. The temperature dependence of the magnetic susceptibility suggests that both the Aminoxyl radical and the BEDT-TTF layer have local spin moments at room temperature. Copyright © 2008 The Chemical Society of Japan.

  • organic multifunctional spin systems based on Aminoxyl radicals
    Advanced Materials, 2001
    Co-Authors: Shinichi Nakatsuji

    Abstract:

    Recent advances in the development of organic multifunctional spin systems are described. This includes systems with carrier transport properties, photo-functionality, liquid crystallinity, and pressure functionality in which Aminoxyl (nitroxide) radicals play a crucial roll.

Andrzej Rajca – 2nd expert on this subject based on the ideXlab platform

  • triplet ground state s 1 pegylated bis Aminoxyl diradical synthesis and the effect of water on magnetic properties
    Chemical Communications, 2005
    Co-Authors: Gaelle Spagnol, Suchada Rajca, Kouichi Shiraishi, Andrzej Rajca

    Abstract:

    The synthesis and magnetic characterization of pegylated bis(Aminoxyl) diradical with an S
    = 1 ground state are presented, revealing water-induced changes in the molecular conformation and magnetic properties.

  • 4,6-Bis(trifluoromethyl)-N,N′-di-tert-butyl-1,3-phenylenebis(Aminoxyl) and its bis(hexafluoroacetylacetonato)manganese(II) complex: synthesis, X-ray crystallography, and magnetism
    Polyhedron, 2001
    Co-Authors: Andrzej Rajca, Suchada Rajca, Jirawat Wongsriratanakul, Charles R. Ross

    Abstract:

    Abstract Synthesis, crystallography, and magnetic characterization of bis(Aminoxyl) 1 and its 2:1 complex with Mn(hfac)2 (2) are described. X-ray structure of 2 (at 20 K) provides one of the rare examples of discrete molecules found for the complexes of Mn(hfac)2 and bis(Aminoxyls). The differences in conformations of the bis(Aminoxyl) moieties in 1 and 2 lead to ferromagnetic and antiferromagnetic exchange coupling through the 1,3-phenylene moiety, in 1 and 2, respectively, as determined by SQUID susceptometry. DFT calculations (at the crystallographic geometries) give the triplet and the singlet ground states for 1 and for bis(Aminoxyl) in 2, respectively. Two analogous conformations of the bis(Aminoxyl) are proposed to be responsible for the unprecedented S-shaped time dependence for the conversion from the singlet to the triplet state of 1 in 2-methyltetrahydrofuran.

  • 4 6 bis trifluoromethyl n n di tert butyl 1 3 phenylenebis Aminoxyl and its bis hexafluoroacetylacetonato manganese ii complex synthesis x ray crystallography and magnetism
    Polyhedron, 2001
    Co-Authors: Andrzej Rajca, Suchada Rajca, Jirawat Wongsriratanakul, Charles R. Ross

    Abstract:

    Abstract Synthesis, crystallography, and magnetic characterization of bis(Aminoxyl) 1 and its 2:1 complex with Mn(hfac)2 (2) are described. X-ray structure of 2 (at 20 K) provides one of the rare examples of discrete molecules found for the complexes of Mn(hfac)2 and bis(Aminoxyls). The differences in conformations of the bis(Aminoxyl) moieties in 1 and 2 lead to ferromagnetic and antiferromagnetic exchange coupling through the 1,3-phenylene moiety, in 1 and 2, respectively, as determined by SQUID susceptometry. DFT calculations (at the crystallographic geometries) give the triplet and the singlet ground states for 1 and for bis(Aminoxyl) in 2, respectively. Two analogous conformations of the bis(Aminoxyl) are proposed to be responsible for the unprecedented S-shaped time dependence for the conversion from the singlet to the triplet state of 1 in 2-methyltetrahydrofuran.

Gianfranco Scorrano – 3rd expert on this subject based on the ideXlab platform

  • Time-resolved EPR characterisation of radical–triplet pairs formed by host–guest interaction of a photoexcited C60–crown ether with an ammonium Aminoxyl in liquid solution
    Chemical Communications, 2020
    Co-Authors: Elena Sartori, Luigi Garlaschelli, Antonio Toffoletti, Carlo Corvaja, Michele Maggini, Gianfranco Scorrano

    Abstract:

    A time resolved EPR (TR-EPR) spectrum of a
    radical–triplet pair (RTP) in the quartet excited state has been
    recorded by irradiating with visible laser light a solution of a
    [60]fullerene–crown ether conjugate and an ammonium Aminoxyl radical;
    this is the first direct observation of a RTP in liquid solution for a
    stable host–guest complex between a macrocyclic ligand bearing a
    triplet precursor and an Aminoxyl ammonium cation.

  • time resolved epr characterisation of radical triplet pairs formed by host guest interaction of a photoexcited c60 crown ether with an ammonium Aminoxyl in liquid solution
    Chemical Communications, 2001
    Co-Authors: Elena Sartori, Luigi Garlaschelli, Antonio Toffoletti, Carlo Corvaja, Michele Maggini, Gianfranco Scorrano

    Abstract:

    A time resolved EPR (TR-EPR) spectrum of a
    radical–triplet pair (RTP) in the quartet excited state has been
    recorded by irradiating with visible laser light a solution of a
    [60]fullerene–crown ether conjugate and an ammonium Aminoxyl radical;
    this is the first direct observation of a RTP in liquid solution for a
    stable host–guest complex between a macrocyclic ligand bearing a
    triplet precursor and an Aminoxyl ammonium cation.