All Stories

  1. Promising Materials for New-Generation Renewable Energy Storage

    Article • APL Materials, November 2023, American Institute of Physics

    Atsushi Okazawa

  2. Multicolor Emission and Photophysical Properties of Proton-Responsive Cyclometallated Iridium(III) Complex in Transparent Cation-Exchange Membrane

    Article • Crystals, July 2020, MDPI AG

    Atsushi Okazawa

  3. Modulating the ground state, stability and charge transport in OFETs of biradicaloid hexahydro-diindenopyrene derivatives and a proposed method to estimate the biradical character

    Article • Chemical Science, January 2020, Royal Society of Chemistry

    Dr MICHEL FRIGOLI, Atsushi Okazawa

  4. A useful preparation of ultrasmall iron oxide particles by using arc plasma deposition

    Article • RSC Advances, January 2020, Royal Society of Chemistry

    Atsushi Okazawa

  5. Chameleonic layered metal–organic frameworks with variable charge-ordered states triggered by temperature and guest molecules

    Article • Chemical Science, January 2020, Royal Society of Chemistry

    Atsushi Okazawa

  6. Temperature dependence of spherical electron transfer in a nanosized [Fe14] complex

    Article • Nature Communications, December 2019, Springer Science + Business Media

    Atsushi Okazawa

  7. Navigated Self-Assembly of a Pd2L4 Cage by Modulation of an Energy Landscape under Kinetic Control

    Article • Journal of the American Chemical Society, November 2019, American Chemical Society (ACS)

    Professor Hirofumi Sato, Atsushi Okazawa

  8. Bifurcation of self-assembly pathways to sheet or cage controlled by kinetic template effect

    Article • Communications Chemistry, November 2019, Springer Science + Business Media

    Professor Hirofumi Sato, Atsushi Okazawa

  9. Effect of Transition Metal Substitution on the Charge-Transfer Phase Transition and Ferromagnetism of Dithiooxalato-Bridged Hetero Metal Complexes, (n-C3H7)4N[FeII1−xMnIIxFeIII(dto)3]

    Article • Crystals, November 2018, MDPI AG

    Atsushi Okazawa

  10. Structural Insight into Order–Disorder Transition and Charge-Transfer Phase Transition in an Iron Mixed-Valence Complex (n-C3H7)4N[FeIIFeIII(dto)3] with a Two-Dimensional Honeycomb Network

    Article • Inorganic Chemistry, October 2018, American Chemical Society (ACS)

    Atsushi Okazawa

  11. Ionic Crystal Containing Protons (H+) as Counter Cations: Preparation and Crystal Structure of a Salt of 4,4′-Bipiperidine-1,1′-diium and Hexacyanidoferrate(II)

    Article • Chemistry Letters, June 2018, The Chemical Society of Japan

    Atsushi Okazawa

  12. Unique Hydration/Dehydration-Induced Vapochromic Behavior of a Charge-Transfer Salt Comprising Viologen and Hexacyanidoferrate(II)

    Article • Inorganic Chemistry, February 2018, American Chemical Society (ACS)

    Atsushi Okazawa

  13. A triplet biradical with double bidentate sites based ontert-butyl pyridyl nitroxide as a candidate for strong ferromagnetic couplers

    Article • New Journal of Chemistry, January 2018, Royal Society of Chemistry

    Atsushi Okazawa

  14. Magnetic properties of V-substitution effect in an iron mixed valence complex

    Article • Polyhedron, November 2017, Elsevier

    Atsushi Okazawa

  15. Enhanced magnetism of perovskite oxides, Sr(Sn,Fe)O3-δ , by substitution of nonmagnetic Ca and Ti ions

    Article • Hyperfine Interactions, October 2017, Springer Science + Business Media

    Atsushi Okazawa

  16. 57Fe and 119Sn Mössbauer study of SrSnO3-δ doped with Fe and Sb under external magnetic fields

    Article • Hyperfine Interactions, October 2017, Springer Science + Business Media

    Atsushi Okazawa

  17. Studies on Nanostructure and Magnetic Behaviors of Mn-Doped Black Iron Oxide Magnetic Fluids Synthesized from Iron Sand

    Article • NANO, September 2017, World Scientific Pub Co Pte Lt

    Atsushi Okazawa

  18. Control of Spin-Crossover Phenomena in One-Dimensional Triazole-Coordinated Iron(II) Complexes by Means of Functional Counter Ions

    Article • Inorganics, August 2017, MDPI AG

    Atsushi Okazawa

  19. Halogen Substituent Effect on the Spin-Transition Temperature in Spin-Crossover Fe(III) Compounds Bearing Salicylaldehyde 2-Pyridyl Hydrazone-Type Ligands and Dicarboxylic Acids

    Article • Inorganics, August 2017, MDPI AG

    Atsushi Okazawa

  20. Magneto-Structural Relationship on Strong Exchange Interactions between Chelating Nitroxide Radical and Transition-Metal Spins

    Article • IOP Conference Series Materials Science and Engineering, May 2017, Institute of Physics Publishing

    Atsushi Okazawa

  21. Synthesis and Magnetic Properties of Linear Two-coordinate Monomeric Diaryliron(II) Complexes Bearing Fused-ring Bulky “Rind” Groups

    Article • Chemistry Letters, June 2016, The Chemical Society of Japan

    Atsushi Okazawa

  22. Small-Angle X-Ray Scattering Study on PVA/Fe 3 O 4 Magnetic Hydrogels

    Article • NANO, March 2016, World Scientific Pub Co Pte Lt

    Dr Darminto Darminto, Atsushi Okazawa

  23. Mössbauer and XRD analysis of corrosion products on weathering steel treated by wet-dry cycles using various solutions

    Article • Hyperfine Interactions, February 2016, Springer Science + Business Media

    Atsushi Okazawa

  24. Magnetic property and Mössbauer analysis of SrSn1−x Fe x O3 prepared by a sol-gel method

    Article • Hyperfine Interactions, February 2016, Springer Science + Business Media

    Atsushi Okazawa

  25. Development of a Photoresponsive Organic–Inorganic Hybrid Magnet: Layered Cobalt Hydroxides Intercalated with Spiropyran Anions

    Article • Bulletin of the Chemical Society of Japan, August 2015, The Chemical Society of Japan

    Atsushi Okazawa

  26. Nanoscale Clustering and Magnetic Properties of Mn x Fe3−x O4 Particles Prepared from Natural Magnetite

    Article • Journal of Superconductivity and Novel Magnetism, May 2015, Springer Science + Business Media

    Dr Darminto Darminto, Atsushi Okazawa

  27. Photochromic Property of Anionic Spiropyran with Sulfonate-substituted Indoline Moiety

    Article • Chemistry Letters, March 2014, The Chemical Society of Japan

    Atsushi Okazawa

  28. Abrupt Spin Transition with Thermal Hysteresis of Iron(III) Complex [FeIII(Him)2(hapen)]AsF6 (Him = Imidazole, H2hapen = N,N′-Bis(2-hydroxyacetophenylidene)ethylenediamine)

    Article • Inorganic Chemistry, February 2014, American Chemical Society (ACS)

    Atsushi Okazawa

  29. A tricky water molecule coordinated to a verdazyl radical–iron(ii) complex: a multitechnique approach

    Article • Physical Chemistry Chemical Physics, January 2014, Royal Society of Chemistry

    Atsushi Okazawa

  30. Cation size effect on photomagnetism and charge transfer phase transition of iron mixed-valence complexes with spiropyrans

    Article • Polyhedron, December 2013, Elsevier

    Atsushi Okazawa

  31. Exchange Coupling and Its Chemical Trend Studied by High-Frequency EPR on Heterometallic [Ln2Ni] Complexes

    Article • Inorganic Chemistry, November 2013, American Chemical Society (ACS)

    Atsushi Okazawa

  32. Sol-gel synthesis and dilute magnetism of nano MgO powder doped with Fe

    Article • Hyperfine Interactions, October 2013, Springer Science + Business Media

    Atsushi Okazawa

  33. Study on spin configuration in photoresponsive iron mixed-valence complexes by Mössbauer spectroscopy

    Article • Hyperfine Interactions, October 2013, Springer Science + Business Media

    Atsushi Okazawa

  34. Alternating Ferro- and Antiferromagnetic Couplings in One-Dimensional Chain Hexachlorodicuprate(II), (MV)[CuCl3]2 (MV = Methyl Viologen)

    Article • Current Inorganic Chemistry, August 2013, Bentham Science Publishers

    Atsushi Okazawa

  35. Ground triplet pyrimidine-4,6-diyl bis(tert-butyl nitroxide) as a paramagnetic building block for metal–organic frameworks

    Article • Tetrahedron Letters, June 2013, Elsevier

    Atsushi Okazawa

  36. Reversible Solid State Redox of an Octacyanometallate-Bridged Coordination Polymer by Electrochemical Ion Insertion/Extraction

    Article • Inorganic Chemistry, March 2013, American Chemical Society (ACS)

    Atsushi Okazawa

  37. Long-range and short-range orderings in K4Fe4P5O20 with a natrolite-like framework

    Article • Dalton Transactions, January 2013, Royal Society of Chemistry

    Atsushi Okazawa

  38. Electrochemical Mg2+ intercalation into a bimetallic CuFe Prussian blue analog in aqueous electrolytes

    Article • Journal of Materials Chemistry A, January 2013, Royal Society of Chemistry

    Atsushi Okazawa

  39. Anionic Iron Complexes with a Bond between an Ate-Type Pentacoordinated Germanium and an Iron Atom

    Article • Organometallics, December 2012, American Chemical Society (ACS)

    Professor Naokazu Kano, Atsushi Okazawa

  40. Precise Electrochemical Control of Ferromagnetism in a Cyanide-Bridged Bimetallic Coordination Polymer

    Article • Inorganic Chemistry, September 2012, American Chemical Society (ACS)

    Atsushi Okazawa

  41. Effect of Nonmagnetic Substitution on the Magnetic Properties and Charge-Transfer Phase Transition of an Iron Mixed-Valence Complex, (n-C3H7)4N[FeIIFeIII(dto)3] (dto = C2

    Article • Inorganic Chemistry, August 2012, American Chemical Society (ACS)

    Atsushi Okazawa

  42. K4Fe4P5O20: A New Mixed Valence Microporous Compound with Elliptical Eight-Ring Channels

    Article • Inorganic Chemistry, June 2012, American Chemical Society (ACS)

    Atsushi Okazawa

  43. Fabrication of a Cyanide-Bridged Coordination Polymer Electrode for Enhanced Electrochemical Ion Storage Ability

    Article • The Journal of Physical Chemistry C, April 2012, American Chemical Society (ACS)

    Atsushi Okazawa

  44. Oximato-bridged light-lanthanide Ln4Cu complexes showing ferromagnetic Ln–Cu exchange coupling

    Article • Chemical Physics Letters, March 2012, Elsevier

    Atsushi Okazawa

  45. Exchange coupling in TbCu and DyCu single-molecule magnets and related lanthanide and vanadium analogs

    Article • Dalton Transactions, January 2012, Royal Society of Chemistry

    Atsushi Okazawa

  46. Exchange couplings in one-dimensionally arrayed 4f–3d heterometallic [Ln2Cu2] compounds: A chemical trend of the coupling parameter

    Article • Polyhedron, November 2011, Elsevier

    Atsushi Okazawa

  47. Single-molecule magnet behavior enhanced by magnetic coupling between 4f and 3d spins

    Article • Polyhedron, November 2011, Elsevier

    Atsushi Okazawa

  48. Study on the spin-crossover transition in [Fe(cis-/trans-stpy)4(X)2] (stpy: styrylpyridine, X: NCS, NCBH3) under high pressure toward ligand-driven light-induced spin change

    Article • Polyhedron, November 2011, Elsevier

    Atsushi Okazawa

  49. Study on the ferromagnetic state in iron mixed-valence complexes, A[FeIIFeIII(dto)3] (A = (n-CnH2n + 1)4N; dto = C2S2O2) by means of Mössbauer spectroscopy

    Article • Hyperfine Interactions, October 2011, Springer Science + Business Media

    Atsushi Okazawa

  50. Ferromagnetic Exchange Couplings Showing a Chemical Trend in Cu–Ln–Cu Complexes (Ln = Gd, Tb, Dy, Ho, Er)

    Article • Inorganic Chemistry, October 2011, American Chemical Society (ACS)

    Atsushi Okazawa

  51. Development of pH-Sensitive Spin-crossover Iron(II) Complex Films, [FeII(diAMsar)]–Nafion: Manipulation of the Spin State by Proton Concentration

    Article • Chemistry Letters, August 2011, The Chemical Society of Japan

    Atsushi Okazawa

  52. Ion‐Induced Transformation of Magnetism in a Bimetallic CuFe Prussian Blue Analogue

    Article • Angewandte Chemie, May 2011, Wiley

    Atsushi Okazawa

  53. Chemical trend of Ln–M exchange couplings in heterometallic complexes with Ln = Gd, Tb, Dy, Ho, Er and M = Cu, V

    Article • Chemical Communications, January 2011, Royal Society of Chemistry

    Atsushi Okazawa

  54. Unusually Large Magnetic Anisotropy in a CuO-Based Semiconductor Cu5V2O10

    Article • Journal of the American Chemical Society, December 2010, American Chemical Society (ACS)

    Atsushi Okazawa

  55. Ferromagnetic Gd–Cu, Tb–Cu, and Ho–Cu Couplings in Isomorphous [Ln2Cu] Complexes

    Article • Chemistry Letters, December 2010, The Chemical Society of Japan

    Atsushi Okazawa

  56. Spin-Transition-Like Behavior on One Side in a Nitroxide-Copper(II)-Nitroxide Triad System

    Article • Inorganic Chemistry, October 2010, American Chemical Society (ACS)

    Atsushi Okazawa

  57. Study on the Rapid Spin Equilibrium in Ph4P[ZnIIFeIII(mto)3] (mto = Monothiooxalato)

    Article • Chemistry Letters, August 2010, The Chemical Society of Japan

    Atsushi Okazawa

  58. Ferro- and Antiferromagnetic Coupling Switch Accompanied by Twist Deformation around the Copper(II) and Nitroxide Coordination Bond

    Article • Journal of the American Chemical Society, July 2010, American Chemical Society (ACS)

    Atsushi Okazawa

  59. Super–superexchange coupling through a hydrogen bond in a linear copper(II) complex, [Cu(LH)(L)]·BF4·2H2O (LH =N-tert-butyl-N-2-pyridylhydroxylamine)

    Article • Chemical Physics Letters, October 2009, Elsevier

    Atsushi Okazawa

  60. Magnetic properties and exchange couplings of one-dimensionally arrayed 4f−3d heterometallic [Ln2Cu2] compounds

    Article • Polyhedron, June 2009, Elsevier

    Atsushi Okazawa

  61. Strong intramolecular ferromagnetic couplings in nickel(II) and copper(II) complexes chelated with tert-butyl 5-methoxy-2-pyridyl nitroxide

    Article • Polyhedron, June 2009, Elsevier

    Atsushi Okazawa

  62. Ferromagnetic Dy−Ni and Antiferromagnetic Dy−Cu Couplings in Single-Molecule Magnets [Dy2Ni] and [Dy2Cu]

    Article • Inorganic Chemistry, March 2009, American Chemical Society (ACS)

    Atsushi Okazawa

  63. Ferromagnetic Dy−Ni and Antiferromagnetic Dy−Cu Couplings in Single-Molecule Magnets [Dy2Ni] and [Dy2Cu]

    Article • Inorganic Chemistry, October 2008, American Chemical Society (ACS)

    Atsushi Okazawa

  64. Magneto-Structure Relationship in Copper(II) and Nickel(II) Complexes Chelated with Stable tert-Butyl 5-Phenyl-2-pyridyl Nitroxide and Related Radicals

    Article • Inorganic Chemistry, August 2008, American Chemical Society (ACS)

    Atsushi Okazawa

  65. Exchange Coupling and Energy-Level Crossing in a Magnetic Chain [Dy2Cu2]n Evaluated by High-Frequency Electron Paramagnetic Resonance

    Article • Chemistry of Materials, April 2008, American Chemical Society (ACS)

    Atsushi Okazawa

  66. Preparation, structures, and magnetic properties of precursors for chelating compounds of 2-pyridyl nitroxide derivatives

    Article • Polyhedron, June 2007, Elsevier

    Atsushi Okazawa

  67. Tetranuclear heterometallic cycle Dy2Cu2 and the corresponding polymer showing slow relaxation of magnetization reorientation

    Article • Polyhedron, June 2007, Elsevier

    Atsushi Okazawa

  68. tert-Butyl 2-Pyridyl Nitroxide Available as a Paramagnetic Chelate Ligand for Strongly Exchange-Coupled Metal−Radical Compounds

    Article • Chemistry of Materials, April 2007, American Chemical Society (ACS)

    Atsushi Okazawa

  69. Strong Ferromagnetic Exchange Couplings in Copper(II) and Nickel(II) Complexes with a Paramagnetic Tridentate Chelate Ligand, 2,2‘-Bipyridin-6-yl tert-Butyl Nitroxide

    Article • Journal of the American Chemical Society, October 2006, American Chemical Society (ACS)

    Atsushi Okazawa

  70. Ferromagnetic exchange coupling in a spiro-fused dinuclear nickel(II) complex with an approximate D2d symmetry

    Article • Chemical Physics Letters, August 2006, Elsevier

    Atsushi Okazawa

  71. Structures and magnetic properties of copper(II) complexes containing tetrakis(2-pyridyl)methane

    Article • Polyhedron, November 2005, Elsevier

    Atsushi Okazawa

  72. Dinuclear Manganese(II) Complex Containing Tetrakis(2-pyridyl)methane as a Spiro-fused Bridge

    Article • Chemistry Letters, November 2004, The Chemical Society of Japan

    Atsushi Okazawa