List of works - Takahiko Kojima

A Low-Spin Ruthenium(IV)-Oxo Complex: Does the Spin State Have an Impact on the Reactivity?

scholarly article by Takahiko Kojima et al published 23 September 2010 in Angewandte Chemie International Edition

A Ruthenium(III)-Oxyl Complex Bearing Strong Radical Character.

scientific article

A directly linked ferrocene-naphthalenediimide conjugate: precise control of stacking structures of π-systems by redox stimuli

scientific article published on 23 July 2013

A discrete conglomerate of a distorted Mo(v)-porphyrin with a directly coordinated keggin-type polyoxometalate

scientific article published in 2007

A discrete supramolecular conglomerate composed of two saddle-distorted zinc(II)-phthalocyanine complexes and a doubly protonated porphyrin with saddle distortion undergoing efficient photoinduced electron transfer

scientific article published in January 2008

A porphyrin nanotube: size-selective inclusion of tetranuclear molybdenum-oxo clusters

scientific article published in March 2004

A ruthenium pterin complex showing proton-coupled electron transfer: synthesis and characterization

scientific article published in October 2003

A triangular prismatic hexanuclear iridium(III) complex bridged by flavin analogues showing reversible redox processes

scientific article published on 01 February 2013

Acid-Base Properties of a Freebase Form of a Quadruply Ring-Fused Porphyrin-Stepwise Protonation Induced by Rigid Ring-Fused Structure

scientific article

Binding of scandium ions to metalloporphyrin-flavin complexes for long-lived charge separation

scientific article

Characteristics and reactivity of ruthenium-oxo complexes

scientific article published on 6 October 2016

Charge separation in metallomacrocycle complexes linked with electron acceptors by axial coordination.

scientific article published on 27 February 2009

Complete Photochromic Structural Changes in Ruthenium(II)Diimine Complexes, Based on Control of the Excited States by Metalation

scientific article published on 16 May 2013

Conformational Dynamics of Monomer- versus Dimer-like Features in a Naphthalenediimide-Based Conjugated Cyclophane

scientific article published on 04 February 2020

Construction of Sn(IV) porphyrin/trinuclear ruthenium cluster dyads linked by pyridine carboxylates: photoinduced electron transfer in the Marcus inverted region

scientific article

Control of electron-transfer reduction by protonation of zinc octabutoxyphthalocyanine assisted by intramolecular hydrogen bonding

scientific article published on 17 June 2011

Control of the spatial arrangements of supramolecular networks based on saddle-distorted porphyrins by intermolecular hydrogen bonding

scientific article published on 22 August 2013

Controlling the redox properties of a pyrroloquinolinequinone (PQQ) derivative in a ruthenium(II) coordination sphere

scientific article published in February 2015

Cooperative Effects of Heterodinuclear IrIII-MII Complexes on Catalytic H2 Evolution from Formic Acid Dehydrogenation in Water

scientific article published on 10 July 2020

Correction to "Efficient Photocatalytic CO2 Reduction by a Ni(II) Complex Having Pyridine Pendants through Capturing a Mg2+ Ion as a Lewis-Acid Cocatalyst"

scientific article published on 19 May 2020

Crystal structures and electronic properties of saddle-distorted and protonated phthalocyanines

scientific article published on 15 February 2011

Crystal structures and properties of a monoprotonated porphyrin

scientific article published on 13 July 2009

Crystal structures and solution properties of discrete complexes composed of saddle-distorted molybdenum(v)-dodecaphenylporphyrins and keggin-type heteropolyoxometalates linked by direct coordination

scientific article published on 10 November 2010

Development of functionality of metal complexes based on proton-coupled electron transfer

scientific article published on 20 April 2020

Dioxygen/Hydrogen Peroxide Interconversion Using Redox Couples of Saddle-Distorted Porphyrins and Isophlorins

scientific article published on 27 March 2019

Efficient Photocatalytic CO2 Reduction by a Ni(II) Complex Having Pyridine Pendants through Capturing a Mg2+ Ion as a Lewis-Acid Cocatalyst

scientific article published on 02 December 2019

Enhancement of 4-electron O2 reduction by a Cu(ii)-pyridylamine complex via protonation of a pendant pyridine in the second coordination sphere in water

scientific article published on 01 September 2015

Formation and Isolation of a Four-Electron Reduced Porphyrin Derivative via Further Reduction of a Stable 20π Isophlorin

scientific article published on 5 December 2017

Formation and characterization of a reactive chromium(v)-oxo complex: mechanistic insight into hydrogen-atom transfer reactions.

scientific article

Formation of a Ruthenium(V)-Imido Complex and the Reactivity in Substrate Oxidation in Water through the Nitrogen Non-Rebound Mechanism

scientific article published on 25 September 2019

Formation of a hybrid compound composed of a saddle-distorted Tin(IV)-porphyrin and a Keggin-type heteropolyoxometalate to undergo intramolecular photoinduced electron transfer.

scientific article

Formation of a supramolecular assembly between a Na(+)-templated G-quartet and a Ni(II)-porphyrin complex

scientific article published on 23 January 2013

Formation of dodecaphenylporphodimethene via facile protonation of saddle-distorted dodecaphenylporphyrin

scientific article

Formation of supramolecular hetero-triads by controlling the hydrogen bonding of conjugate bases with a diprotonated porphyrin based on electrostatic interaction

scientific article published on 01 June 2017

Fundamental electron-transfer and proton-coupled electron-transfer properties of Ru(iv)-oxo complexes

scientific article published on 22 July 2019

Heteronuclear RuIIAgI Complexes Having a Pyrroloquinolinequinone Derivative as a Bridging Ligand

scientific article published on 19 February 2013

Homogeneous Photocatalytic Water Oxidation with a Dinuclear Co(III)-Pyridylmethylamine Complex.

scientific article published on 21 January 2016

Homogeneous and Heterogeneous Photocatalytic Water Oxidation by Persulfate

scientific article published on 17 February 2016

Importance of the Reactant-State Potentials of Chromium(V)-Oxo Complexes to Determine the Reactivity in Hydrogen-Atom Transfer Reactions

article

Intermediate-Spin Iron(III) Complexes Having a Redox-Noninnocent Macrocyclic Tetraamido Ligand.

scientific article published on 16 March 2018

Intramolecular rearrangement for regioselective complexation by intramolecular CH/pi interaction in a hydrophobic cavity of a ruthenium coordination sphere.

scientific article published in December 2004

Mechanistic Insight into Dioxygen Evolution from Diastereomeric μ-Peroxo Dinuclear Co(III) Complexes Based on Stoichiometric Electron-Transfer Oxidation

scientific article published on 27 February 2019

Mechanistic Insight into Synergistic Catalysis of Olefin Hydrogenation by a Hetero-Dinuclear RuII-CoII Complex with Adjacent Reaction Sites

scientific article published on 09 August 2019

Mechanistic Insights into C-H Oxidations by Ruthenium(III)-Pterin Complexes: Impact of Basicity of the Pterin Ligand and Electron Acceptability of the Metal Center on the Transition States

scientific article published on 12 July 2016

Mechanistic Insights into Homogeneous Electrocatalytic and Photocatalytic Hydrogen Evolution Catalyzed by High-Spin Ni(II) Complexes with S2N2-Type Tetradentate Ligands

scientific article published on 30 May 2018

Mechanistic Insights into Photochromic Behavior of a Ruthenium(II)-Pterin Complex

scientific article published on 03 May 2011

Mechanistic study of methanol oxidation by RuIV–oxo complexes

Metal-Oxyl Species and Their Possible Roles in Chemical Oxidations

scientific article published on 15 July 2019

Modulation of characteristics of a ruthenium-coordinated flavin analogue that shows an unusual coordination mode

scientific article published in January 2007

Multiply-fused porphyrins—effects of extended π-conjugation on the optical and electrochemical properties

scientific article published on 01 July 2013

NH Tautomerism of a Quadruply Fused Porphyrin: Rigid Fused Structure Delays the Proton Transfer

scientific article published on 10 December 2017

Novel cofacial oxidative coupling reaction of phosphinine in the presence of CuI and ClO4-.

scientific article published on 16 January 2004

Peptide Cross-linkers: Immobilization of Platinum Nanoparticles Highly Dispersed on Graphene Oxide Nanosheets with Enhanced Photocatalytic Activities.

scientific article

Photocatalytic formation of dimethyllepidopterene from 9,10-dimethylanthracene via electron-transfer oxidation

scientific article published in December 2006

Photocatalytic hydrogen evolution using a Ru(II)-bound heteroaromatic ligand as a reactive site

scientific article published on 19 November 2020

Photocatalytic oxidation of organic compounds in water by using ruthenium(II)-pyridylamine complexes as catalysts with high efficiency and selectivity

scientific article published on 13 December 2012

Photochemical activation of ruthenium(II)-pyridylamine complexes having a pyridine-N-oxide pendant toward oxygenation of organic substrates

scientific article

Photochemical and thermal isomerization of a ruthenium(II)-alloxazine complex involving an unusual coordination mode

scientific article

Porphyrin nanochannels reinforced by hydrogen bonding

scientific article published on 14 May 2012

Proton shift upon one-electron reduction in ruthenium(II)-coordinated pterins

scientific article

Proton-Coupled Electron Shuttling in a Covalently Linked Ruthenium–Copper Heterodinuclear Complex

scientific article published on 27 October 2011

Proton-coupled electron transfer in ruthenium(II)-pterin complexes: formation of ruthenium-coordinated pterin radicals and their electronic structures

scientific article published on 30 November 2007

Proton-coupled electron-transfer reduction of dioxygen catalyzed by a saddle-distorted cobalt phthalocyanine

scientific article published on 21 February 2012

Reactivity of a Ru(III)-hydroxo complex in substrate oxidation in water

scientific article published on 01 December 2014

Redox-Noninnocent Behavior of Tris(2-pyridylmethyl)amine Bound to a Lewis Acidic Rh(III) Ion Induced by C-H Deprotonation

scientific article published on 24 August 2015

Regulation of Redox Potential of a Pterin Derivative Bound to a Ruthenium(II) Complex by Intermolecular Hydrogen Bonding with Nucleobases

scientific article published on 30 March 2012

Remarkable enhancement of catalytic activity of a 2 : 1 complex between a non-planar Mo(v)–porphyrin and a ruthenium-substituted Keggin-type heteropolyoxometalate in catalytic oxidation of benzyl alcohols

scientific article published in 2012

Ring-fused porphyrins: extension of π-conjugation significantly affects the aromaticity and optical properties of the porphyrin π-systems and the Lewis acidity of the central metal ions

scientific article

Ruthenium-catalyzed selective and efficient oxygenation of hydrocarbons with water as an oxygen source

scientific article

Selective Convergence to Atropisomers of a Porphyrin Derivative Having Bulky Substituents at the Periphery

scientific article published on 01 October 2020

Selective catalytic 2e--oxidation of organic substrates by an FeII complex having an N-heterocyclic carbene ligand in water

scientific article published on 27 July 2020

Selective inclusion of electron-donating molecules into porphyrin nanochannels derived from the self-assembly of saddle-distorted, protonated porphyrins and photoinduced electron transfer from guest molecules to porphyrin dications

scientific article

Structure and photoinduced electron transfer dynamics of a series of hydrogen-bonded supramolecular complexes composed of electron donors and a saddle-distorted diprotonated porphyrin.

scientific article

Structures and properties of ruthenium(II) complexes of pyridylamine ligands with oxygen-bound amide moieties: regulation of structures and proton-coupled electron transfer.

scientific article published in October 2004

Substituent Effects at the β-Positions of the Nonfused Pyrroles in a Quadruply Fused Porphyrin on the Structure and Optical and Electrochemical Properties

scientific article published on 23 January 2018

Supramolecular structures and photoelectronic properties of the inclusion complex of a cyclic free-base porphyrin dimer and C60.

scientific article

Synthesis and characterization of an azido-bridged dinuclear ruthenium(II) polypyridylamine complex forming a mixed-valence state

scientific article published on 22 April 2013

Synthesis and characterization of mononuclear ruthenium(III) pyridylamine complexes and mechanistic insights into their catalytic alkane functionalization with m-chloroperbenzoic acid

scientific article published on 01 January 2007

Synthesis and characterization of novel ferrocene-containing pyridylamine ligands and their ruthenium(II) complexes: electronic communication through hydrogen-bonded amide linkage

scientific article published on 9 January 2008

Synthesis and characterization of ruthenium(II)-pyridylamine complexes with catechol pendants as metal binding sites.

scientific article published in April 2010

Synthesis of a one-dimensional metal-dimer assembled system with interdimer interaction, M2(dtp)4 (M = Ni, Pd; dtp = dithiopropionato).

scientific article published in January 2006

Tetranuclear Ruthenium(II) Complex with a Dinucleating Ligand Forming Multi-Mixed-Valence States

scientific article published on 20 November 2014

Theoretical study of oxidation of cyclohexane diol to adipic anhydride by [Ru(IV)(O)(tpa)(H2O)]2+ complex (tpa ═ tris(2-pyridylmethyl)amine).

scientific article published on 2 June 2011

Thermodynamics and Photodynamics of a Monoprotonated Porphyrin Directly Stabilized by Hydrogen Bonding with Polar Protic Solvents.

scientific article

Toward a photochemical and thermal molecular machine: reversible ligand dissociation and binding in a ruthenium(II)-2,2'-bipyridine complex with tris(2-pyridylmethyl)amine.

scientific article published in April 2004

Visible-Light-Driven Photocatalytic CO2 Reduction by a Ni(II) Complex Bearing a Bioinspired Tetradentate Ligand for Selective CO Production.

scientific article published on 28 April 2017

List of works by Takahiko Kojima

A Low-Spin Ruthenium(IV)-Oxo Complex: Does the Spin State Have an Impact on the Reactivity?

A Ruthenium(III)-Oxyl Complex Bearing Strong Radical Character.

A directly linked ferrocene-naphthalenediimide conjugate: precise control of stacking structures of π-systems by redox stimuli

A discrete conglomerate of a distorted Mo(v)-porphyrin with a directly coordinated keggin-type polyoxometalate

A discrete supramolecular conglomerate composed of two saddle-distorted zinc(II)-phthalocyanine complexes and a doubly protonated porphyrin with saddle distortion undergoing efficient photoinduced electron transfer

A porphyrin nanotube: size-selective inclusion of tetranuclear molybdenum-oxo clusters

A ruthenium pterin complex showing proton-coupled electron transfer: synthesis and characterization

A triangular prismatic hexanuclear iridium(III) complex bridged by flavin analogues showing reversible redox processes

Acid-Base Properties of a Freebase Form of a Quadruply Ring-Fused Porphyrin-Stepwise Protonation Induced by Rigid Ring-Fused Structure

Binding of scandium ions to metalloporphyrin-flavin complexes for long-lived charge separation

Characteristics and reactivity of ruthenium-oxo complexes

Charge separation in metallomacrocycle complexes linked with electron acceptors by axial coordination.

Complete Photochromic Structural Changes in Ruthenium(II)Diimine Complexes, Based on Control of the Excited States by Metalation

Conformational Dynamics of Monomer- versus Dimer-like Features in a Naphthalenediimide-Based Conjugated Cyclophane

Construction of Sn(IV) porphyrin/trinuclear ruthenium cluster dyads linked by pyridine carboxylates: photoinduced electron transfer in the Marcus inverted region

Control of electron-transfer reduction by protonation of zinc octabutoxyphthalocyanine assisted by intramolecular hydrogen bonding

Control of the spatial arrangements of supramolecular networks based on saddle-distorted porphyrins by intermolecular hydrogen bonding

Controlling the redox properties of a pyrroloquinolinequinone (PQQ) derivative in a ruthenium(II) coordination sphere

Cooperative Effects of Heterodinuclear IrIII-MII Complexes on Catalytic H2 Evolution from Formic Acid Dehydrogenation in Water

Correction to "Efficient Photocatalytic CO2 Reduction by a Ni(II) Complex Having Pyridine Pendants through Capturing a Mg2+ Ion as a Lewis-Acid Cocatalyst"

Crystal structures and electronic properties of saddle-distorted and protonated phthalocyanines

Crystal structures and properties of a monoprotonated porphyrin

Crystal structures and solution properties of discrete complexes composed of saddle-distorted molybdenum(v)-dodecaphenylporphyrins and keggin-type heteropolyoxometalates linked by direct coordination

Development of functionality of metal complexes based on proton-coupled electron transfer

Dioxygen/Hydrogen Peroxide Interconversion Using Redox Couples of Saddle-Distorted Porphyrins and Isophlorins

Efficient Photocatalytic CO2 Reduction by a Ni(II) Complex Having Pyridine Pendants through Capturing a Mg2+ Ion as a Lewis-Acid Cocatalyst

Enhancement of 4-electron O2 reduction by a Cu(ii)-pyridylamine complex via protonation of a pendant pyridine in the second coordination sphere in water

Formation and Isolation of a Four-Electron Reduced Porphyrin Derivative via Further Reduction of a Stable 20π Isophlorin

Formation and characterization of a reactive chromium(v)-oxo complex: mechanistic insight into hydrogen-atom transfer reactions.

Formation of a Ruthenium(V)-Imido Complex and the Reactivity in Substrate Oxidation in Water through the Nitrogen Non-Rebound Mechanism

Formation of a hybrid compound composed of a saddle-distorted Tin(IV)-porphyrin and a Keggin-type heteropolyoxometalate to undergo intramolecular photoinduced electron transfer.

Formation of a supramolecular assembly between a Na(+)-templated G-quartet and a Ni(II)-porphyrin complex

Formation of dodecaphenylporphodimethene via facile protonation of saddle-distorted dodecaphenylporphyrin

Formation of supramolecular hetero-triads by controlling the hydrogen bonding of conjugate bases with a diprotonated porphyrin based on electrostatic interaction

Fundamental electron-transfer and proton-coupled electron-transfer properties of Ru(iv)-oxo complexes

Heteronuclear RuIIAgI Complexes Having a Pyrroloquinolinequinone Derivative as a Bridging Ligand

Homogeneous Photocatalytic Water Oxidation with a Dinuclear Co(III)-Pyridylmethylamine Complex.

Homogeneous and Heterogeneous Photocatalytic Water Oxidation by Persulfate

Importance of the Reactant-State Potentials of Chromium(V)-Oxo Complexes to Determine the Reactivity in Hydrogen-Atom Transfer Reactions

Intermediate-Spin Iron(III) Complexes Having a Redox-Noninnocent Macrocyclic Tetraamido Ligand.

Intramolecular rearrangement for regioselective complexation by intramolecular CH/pi interaction in a hydrophobic cavity of a ruthenium coordination sphere.

Mechanistic Insight into Dioxygen Evolution from Diastereomeric μ-Peroxo Dinuclear Co(III) Complexes Based on Stoichiometric Electron-Transfer Oxidation

Mechanistic Insight into Synergistic Catalysis of Olefin Hydrogenation by a Hetero-Dinuclear RuII-CoII Complex with Adjacent Reaction Sites

Mechanistic Insights into C-H Oxidations by Ruthenium(III)-Pterin Complexes: Impact of Basicity of the Pterin Ligand and Electron Acceptability of the Metal Center on the Transition States

Mechanistic Insights into Homogeneous Electrocatalytic and Photocatalytic Hydrogen Evolution Catalyzed by High-Spin Ni(II) Complexes with S2N2-Type Tetradentate Ligands

Mechanistic Insights into Photochromic Behavior of a Ruthenium(II)-Pterin Complex

Mechanistic study of methanol oxidation by RuIV–oxo complexes

Metal-Oxyl Species and Their Possible Roles in Chemical Oxidations

Modulation of characteristics of a ruthenium-coordinated flavin analogue that shows an unusual coordination mode

Multiply-fused porphyrins—effects of extended π-conjugation on the optical and electrochemical properties

NH Tautomerism of a Quadruply Fused Porphyrin: Rigid Fused Structure Delays the Proton Transfer

Novel cofacial oxidative coupling reaction of phosphinine in the presence of CuI and ClO4-.

Peptide Cross-linkers: Immobilization of Platinum Nanoparticles Highly Dispersed on Graphene Oxide Nanosheets with Enhanced Photocatalytic Activities.

Photocatalytic formation of dimethyllepidopterene from 9,10-dimethylanthracene via electron-transfer oxidation

Photocatalytic hydrogen evolution using a Ru(II)-bound heteroaromatic ligand as a reactive site

Photocatalytic oxidation of organic compounds in water by using ruthenium(II)-pyridylamine complexes as catalysts with high efficiency and selectivity

Photochemical activation of ruthenium(II)-pyridylamine complexes having a pyridine-N-oxide pendant toward oxygenation of organic substrates

Photochemical and thermal isomerization of a ruthenium(II)-alloxazine complex involving an unusual coordination mode

Porphyrin nanochannels reinforced by hydrogen bonding

Proton shift upon one-electron reduction in ruthenium(II)-coordinated pterins

Proton-Coupled Electron Shuttling in a Covalently Linked Ruthenium–Copper Heterodinuclear Complex

Proton-coupled electron transfer in ruthenium(II)-pterin complexes: formation of ruthenium-coordinated pterin radicals and their electronic structures

Proton-coupled electron-transfer reduction of dioxygen catalyzed by a saddle-distorted cobalt phthalocyanine

Reactivity of a Ru(III)-hydroxo complex in substrate oxidation in water

Redox-Noninnocent Behavior of Tris(2-pyridylmethyl)amine Bound to a Lewis Acidic Rh(III) Ion Induced by C-H Deprotonation

Regulation of Redox Potential of a Pterin Derivative Bound to a Ruthenium(II) Complex by Intermolecular Hydrogen Bonding with Nucleobases

Remarkable enhancement of catalytic activity of a 2 : 1 complex between a non-planar Mo(v)–porphyrin and a ruthenium-substituted Keggin-type heteropolyoxometalate in catalytic oxidation of benzyl alcohols

Ring-fused porphyrins: extension of π-conjugation significantly affects the aromaticity and optical properties of the porphyrin π-systems and the Lewis acidity of the central metal ions

Ruthenium-catalyzed selective and efficient oxygenation of hydrocarbons with water as an oxygen source

Selective Convergence to Atropisomers of a Porphyrin Derivative Having Bulky Substituents at the Periphery

Selective catalytic 2e--oxidation of organic substrates by an FeII complex having an N-heterocyclic carbene ligand in water

Selective inclusion of electron-donating molecules into porphyrin nanochannels derived from the self-assembly of saddle-distorted, protonated porphyrins and photoinduced electron transfer from guest molecules to porphyrin dications

Structure and photoinduced electron transfer dynamics of a series of hydrogen-bonded supramolecular complexes composed of electron donors and a saddle-distorted diprotonated porphyrin.

Structures and properties of ruthenium(II) complexes of pyridylamine ligands with oxygen-bound amide moieties: regulation of structures and proton-coupled electron transfer.

Substituent Effects at the β-Positions of the Nonfused Pyrroles in a Quadruply Fused Porphyrin on the Structure and Optical and Electrochemical Properties

Supramolecular structures and photoelectronic properties of the inclusion complex of a cyclic free-base porphyrin dimer and C60.

Synthesis and characterization of an azido-bridged dinuclear ruthenium(II) polypyridylamine complex forming a mixed-valence state

Synthesis and characterization of mononuclear ruthenium(III) pyridylamine complexes and mechanistic insights into their catalytic alkane functionalization with m-chloroperbenzoic acid

Synthesis and characterization of novel ferrocene-containing pyridylamine ligands and their ruthenium(II) complexes: electronic communication through hydrogen-bonded amide linkage