All Stories

  1. Synthesis and Characterization of ( R )‐ and ( S )‐1,1′‐Bi‐2‐Naphtholato Coordinated Gallium(III) Porphyrins and Their Chiroptical Properties

    Article • European Journal of Inorganic Chemistry, October 2025, Wiley

    Dr. Ken-ichi Yamashita

  2. Effect of Chalcogen Interaction on the Structure of Methine‐Bridged Trichalcogenophenes

    Article • Chemistry - A European Journal, June 2025, Wiley

    Dr. Ken-ichi Yamashita

  3. Tuning Antiaromaticity Through Meso‐Substituent Orientation in Core‐Modified Isophlorins

    Article • Asian Journal of Organic Chemistry, May 2025, Wiley

    Dr. Ken-ichi Yamashita

  4. Tuning Antiaromaticity through meso-Substituent Orientation in Core-Modified Isophlorins

    Article • March 2025, American Chemical Society (ACS)

    Dr. Ken-ichi Yamashita

  5. Effect of Chalcogen Interaction on the Structure of Methine-Bridged Trichalcogenophenes

    Article • March 2025, American Chemical Society (ACS)

    Dr. Ken-ichi Yamashita

  6. Tuning Antiaromaticity through meso-Substituent Orientation in Core-Modified Isophlorins

    Article • March 2025, American Chemical Society (ACS)

    Dr. Ken-ichi Yamashita

  7. Synthesis and Characterization of an Air‐Stable Tin(IV) β‐Tetracyanoisophlorin Complex: Enhanced Antiaromaticity through Metal Complexation

    Article • Asian Journal of Organic Chemistry, January 2025, Wiley

    Dr. Ken-ichi Yamashita

  8. Front Cover: Stable Antiaromatic [16]Triphyrin(2.1.1) with Core Modification: Synthesis Using a 16π Electrocyclic Reaction (Chem. Eur. J. 69/2024)

    Article • Chemistry - A European Journal, December 2024, Wiley

    Dr. Ken-ichi Yamashita

  9. Stable Antiaromatic [16]Triphyrin(2.1.1) with Core Modification: Synthesis Using a 16π Electrocyclic Reaction

    Article • Chemistry - A European Journal, October 2024, Wiley

    Dr. Ken-ichi Yamashita

  10. Stable Antiaromatic [16]Triphyrin(2.1.1) with Core-Modification: Synthesis via a 16π Electrocyclic Reaction

    Article • August 2024, American Chemical Society (ACS)

    Dr. Ken-ichi Yamashita

  11. Cover Feature: Synthesis and Characterization of Quinone Compounds Derived from Doubly and Triply Linked Diporphyrins and Tuning of Their Absorption Properties (Chem. Eur. J. 66/2023)

    Article • Chemistry - A European Journal, October 2023, Wiley

    Dr. Ken-ichi Yamashita

  12. Synthesis and Characterization of Quinone Compounds Derived from Doubly and Triply Linked Diporphyrins and Tuning of Their Absorption Properties**

    Article • Chemistry - A European Journal, October 2023, Wiley

    Dr. Ken-ichi Yamashita

  13. Synthesis and Characterization of Quinone Compounds Derived from Doubly- and Triply-Linked Diporphyrins and Tuning of Their Absorption Properties

    Article • August 2023, American Chemical Society (ACS)

    Dr. Ken-ichi Yamashita

  14. Structurally well-defined conjugated meso-aminoporphyrin oligomers analogous to polyanilines

    Article • Chemical Science, January 2023, Royal Society of Chemistry

    Dr. Ken-ichi Yamashita

  15. Front Cover: 20π Antiaromatic Isophlorins without Metallation or Core Modification (Eur. J. Org. Chem. 46/2022)

    Article • European Journal of Organic Chemistry, December 2022, Wiley

    Dr. Ken-ichi Yamashita

  16. 20π Antiaromatic Isophlorins without Metallation or Core Modification

    Article • European Journal of Organic Chemistry, August 2022, Wiley

    Dr. Ken-ichi Yamashita

  17. 20π antiaromatic isophlorins without metallation or core modification

    Article • June 2022, American Chemical Society (ACS)

    Dr. Ken-ichi Yamashita

  18. 20π antiaromatic isophlorins without metallation or core modification

    Article • June 2022, American Chemical Society (ACS)

    Dr. Ken-ichi Yamashita

  19. Synthesis of Fe(II)/Co(II)-Fused Triphenyl Porphyrin Dimer as Candidate for Oxygen Reduction Reaction Catalyst

    Article • Indonesian Journal of Chemistry, July 2021, Universitas Gadjah Mada

    Dr. Ken-ichi Yamashita

  20. Outstanding Enhancement in the Axial Coordination Ability of the Highly Rigid Cofacial Cyclic Metalloporphyrin Dimer

    Article • Asian Journal of Organic Chemistry, April 2021, Wiley

    Dr. Ken-ichi Yamashita

  21. Magnetic Circularly Polarized Luminescence from Pt II OEP and F 2 ‐ppyPt II (acac) under North‐up and South‐up Faraday Geometries

    Article • Chemistry - An Asian Journal, March 2021, Wiley

    Dr. Ken-ichi Yamashita

  22. Outstanding Enhancement in the Axial Coordination Ability of the Highly Rigid Cofacial Cyclic Metalloporphyrin Dimer

    Article • February 2021, American Chemical Society (ACS)

    Dr. Ken-ichi Yamashita

  23. Synthesis of Porphyrinquinone and Doubly‐Fused Diporphyrin Quinone Through Oxidation of Diarylporphyrins Using a Hypervalent Iodine Compound

    Article • Chemistry - An Asian Journal, August 2020, Wiley

    Dr. Ken-ichi Yamashita

  24. Metal complexes of 5,15-porphyrinquinones: Systematic study of crystal structure, electronic structure, and Lewis acidity

    Article • European Journal of Inorganic Chemistry, June 2020, Wiley

    Dr. Ken-ichi Yamashita

  25. Efficient Synthesis of Arylenedioxy‐Bridged Porphyrin Dimers through Catalyst‐Free Nucleophilic Aromatic Substitution

    Article • ChemPlusChem, January 2020, Wiley

    Dr. Ken-ichi Yamashita

  26. Structure determination and negative differential resistance of tetraarylporphyrin/polyoxometalate 2 : 1 complexes

    Article • Journal of Materials Chemistry C, January 2020, Royal Society of Chemistry

    Dr. Ken-ichi Yamashita

  27. Facile redox‐induced aromatic‐antiaromatic interconversion of a β‐tetracyano‐21,23‐dithiaporphyrin under ambient conditions

    Article • Chemistry - A European Journal, December 2019, Wiley

    Dr. Ken-ichi Yamashita

  28. Photochemical reaction of anthracene with dioxygen catalyzed by platinum(II) porphyrin

    Article • Tetrahedron Letters, September 2019, Elsevier

    Dr. Ken-ichi Yamashita

  29. Stable Singlet Biradicals of Rare‐Earth‐Fused Diporphyrin‐Triple‐Decker Complexes with Low Energy Gaps and Multi‐Redox States

    Article • Chemistry - A European Journal, February 2019, Wiley

    Dr. Ken-ichi Yamashita

  30. Unexpected Oxidation Reaction of 1,6-Diarylpyrene withCu(BF4)2⋅nH2O Affording Pyrenequinones

    Article • ChemistrySelect, January 2019, Wiley

    Dr. Ken-ichi Yamashita

  31. Versatile and Catalyst‐Free Methods for the Introduction of Group‐16 Elements at themeso‐Positions of Diarylporphyrins

    Article • Asian Journal of Organic Chemistry, October 2018, Wiley

    Dr. Ken-ichi Yamashita

  32. Front Cover: Redox‐Driven Symmetry Change for Terbium(III) Bis(porphyrinato) Double‐Decker Complexes by the Azimuthal Rotation of the Porphyrin Macrocycles (Chem. Asian J. 13/2018)

    Article • Chemistry - An Asian Journal, June 2018, Wiley

    Dr. Ken-ichi Yamashita

  33. Redox‐Driven Symmetry Change for Terbium(III) Bis(porphyrinato) Double‐Decker Complexes by the Azimuthal Rotation of the Porphyrin Macrocycles

    Article • Chemistry - An Asian Journal, May 2018, Wiley

    Dr. Ken-ichi Yamashita

  34. Synthesis of Tetra(3-thienyl)biphenoquinone and its Charge Transfer Complex with Perylene

    Article • Asian Journal of Organic Chemistry, November 2017, Wiley

    Dr. Ken-ichi Yamashita

  35. Thiophene-Fused Dinaphthopentaphenes: Versatile Applications of 1,2-Bis(pyren-2-yl)aromatics in the Synthesis of π-Expanded Molecules

    Article • ChemistrySelect, May 2017, Wiley

    Dr. Ken-ichi Yamashita

  36. Room-temperature discrete-charge-fluctuation dynamics of a single molecule adsorbed on a carbon nanotube

    Article • Nanoscale, January 2017, Royal Society of Chemistry

    Dr. Ken-ichi Yamashita

  37. Metal-Free Synthesis of meso-Aminoporphyrins through Reduction of meso-Azidoporphyrins Generated in Situ by Nucleophilic Substitution Reactions of meso-Bromoporphyrins

    Article • The Journal of Organic Chemistry, November 2016, American Chemical Society (ACS)

    Dr. Ken-ichi Yamashita

  38. Systematic Structural Elucidation for the Protonated Form of Rare Earth Bis(porphyrinato) Double-Decker Complexes: Direct Structural Evidence of the Location of the Attached Proton

    Article • Inorganic Chemistry, August 2016, American Chemical Society (ACS)

    Dr. Ken-ichi Yamashita

  39. Oligomerization Reactions of Bis(ethynyl)tetraphenylporphyrin Derivatives by Glaser–Hay Coupling Reaction: Isolation and Characterization of Dimer, Trimer, and Tetramer

    Article • Synthesis, April 2016, Thieme Publishing Group

    Dr. Ken-ichi Yamashita

  40. Molecular Design and Syntheses of Tetracyano-5,10-porphyrinquinodimethane Showing Stabilized LUMO

    Article • Chemistry - An Asian Journal, February 2016, Wiley

    Dr. Ken-ichi Yamashita

  41. Oxo(porphyrinato)vanadium(IV) as a standard for geoporphyrins

    Article • Inorganica Chimica Acta, January 2016, Elsevier

    Dr. Ken-ichi Yamashita

  42. Metal complexes of π-expanded ligands (2): Synthesis and characterizations of bis[2-[(octylimino)methyl]-1-pyrenolato-N,O] palladium(II) and the stabilized vacant dx2-y2 orbital

    Article • Polyhedron, December 2015, Elsevier

    Dr. Ken-ichi Yamashita

  43. π-Expanded Axially Chiral Biaryls and Their Emissions: Molecular Design, Syntheses, Optical Resolution, Absolute Configuration, and Circularly Polarized Luminescence of 1,1′-Bipyrene-2,2′-diols

    Article • Chemistry Letters, November 2015, The Chemical Society of Japan

    Dr. Ken-ichi Yamashita

  44. Stepwise Synthesis of Structurally Well-defined Porphyrin Wires Connected by Platinum Acetylides

    Article • Chemistry Letters, September 2015, The Chemical Society of Japan

    Dr. Ken-ichi Yamashita

  45. Oxidative Intramolecular C–C Bond Formation Reaction of 1,2-Bis(pyren-2-yl)benzene: Synthesis and Characterization of Benzodinaphthopentaphene

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

    Dr. Ken-ichi Yamashita

  46. Syntheses of a pyrene-based π-expanded ligand and the corresponding platinum(II) complex, bis[2-[(octylimino)methyl]-1-pyrenolato-N,O] platinum(II)

    Article • Inorganica Chimica Acta, June 2015, Elsevier

    Dr. Ken-ichi Yamashita

  47. Facile and Practical Synthesis of Platinum(II) Porphyrins under Mild Conditions

    Article • Chemistry Letters, April 2015, The Chemical Society of Japan

    Dr. Ken-ichi Yamashita

  48. Regioselective Oxidative Oligomerization Reaction of 2-tert-Alkylpyrene and Isolation of Structurally Well-defined 1,3-Pyrenylenes

    Article • Chemistry Letters, March 2015, The Chemical Society of Japan

    Dr. Ken-ichi Yamashita

  49. Oxidation of meso-Diarylporphyrins by a Hypervalent Iodine Compound: Facile Synthesis of meso-Acyloxyporphyrins and Dioxoporphodimethenes

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

    Dr. Ken-ichi Yamashita

  50. Conductance of Au/1,4-benzenedicarbothioamide/Au molecular junctions: A proposal for a potential linker

    Article • Chemical Physics Letters, March 2014, Elsevier

    Dr. Ken-ichi Yamashita

  51. Matrix-assisted laser desorption ionization using lithium-substituted mordenite surface

    Article • Chemical Physics Letters, September 2012, Elsevier

    Dr. Ken-ichi Yamashita

  52. Catalyst-Free Aromatic Nucleophilic Substitution of meso-Bromoporphyrins with Azide Anion: Efficient Synthesis and Structural Analyses of meso-Azidoporphyrins

    Article • Organic Letters, December 2011, American Chemical Society (ACS)

    Dr. Ken-ichi Yamashita

  53. A Forgotten Olefin: A Convenient One-pot Cascade Reaction Involving Suzuki–Miyaura and Mizoroki–Heck Couplings to Form (E)-1,2-Di(pyren-1-yl)ethylene

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

    Dr. Ken-ichi Yamashita

  54. Facile Aromatic Finkelstein Iodination (AFI) Reaction in 1,3-Dimethyl-2-imidazolidinone (DMI)

    Article • Synthetic Communications, June 2011, Taylor & Francis

    Dr. Ken-ichi Yamashita

  55. Superexchange mediated energy transfer in zinc(ii) porphyrin–free base porphyrin dimers: comparison of m- and p-bis(phenylethynyl) phenylene linked dimers

    Article • Physical Chemistry Chemical Physics, January 2011, Royal Society of Chemistry

    Dr. Ken-ichi Yamashita

  56. A proposal for a new porphine substitution motif aimed at advanced materials: introduction of 4-alkoxy-3,5-diisopropylphenyl groups on porphine

    Article • Journal of Porphyrins and Phthalocyanines, December 2010, World Scientific Pub Co Pte Lt

    Dr. Ken-ichi Yamashita

  57. Temperature-dependent Emission of Copper(I) Phenanthroline Complexes with Bulky Substituents: Estimation of an Energy Gap between the Singlet and Triplet MLCT States

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

    Dr. Ken-ichi Yamashita

  58. Photo-induced self-assembly of Pt(ii)-linked rings and cages via the photolabilization of a Pt(ii)–py bond

    Article • New Journal of Chemistry, January 2009, Royal Society of Chemistry

    Dr. Ken-ichi Yamashita

  59. Formation of bis- and tris[2]catenanes via the cross-catenation of Pd(II)- and Pt(II)-linked coordination rings

    Article • Tetrahedron, August 2007, Elsevier

    Dr. Ken-ichi Yamashita

  60. Photoswitchable Molecular Lock. One-Way Catenation of a Pt(II)-Linked Coordination Ring via the Photolabilization of a Pt(II)−Pyridine Bond

    Article • Journal of the American Chemical Society, February 2007, American Chemical Society (ACS)

    Dr. Ken-ichi Yamashita

  61. Ru(ii)-cornered coordination cage that senses guest inclusion by color change

    Article • Chemical Communications, January 2007, Royal Society of Chemistry

    Dr. Ken-ichi Yamashita

  62. Ultramacrocyclization through Reversible Catenation

    Article • Angewandte Chemie, August 2005, Wiley

    Dr. Ken-ichi Yamashita

  63. Kinetic Self-Assembly: Selective Cross-Catenation of Two Sterically Differentiated PdII-Coordination Rings

    Article • Angewandte Chemie, September 2004, Wiley

    Dr. Ken-ichi Yamashita

  64. A circular tris[2]catenane from molecular ‘figure-of-eight’

    Article • Chemical Communications, January 2004, Royal Society of Chemistry

    Dr. Ken-ichi Yamashita