Keiji Okada - Publications, H-index & Citations

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Keiji Okada

hokkaido university

36H-index

435Paper Count

5.4KCitation Count

Published Papers 79

Publication Date

High-resolution processing of Himawari meteorological satellite data

Journal of Agricultural Meteorology

IF0

2026-01-01

PREAI

Oiso, Naoya K.; Akuma, Issei S.; O Kada, Keiji

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Magic Blue-Promoted Synthesis of a Highly Planar Tetraphenylbenzidine: Evaluation of Its Fundamental Properties and Unraveling the Intriguing Mechanism for Its Formation

Asian Journal of Organic Chemistry

IF2.7

2025-06-13

PREAI

Kanata Wada; Dr. Yutaro Kuramoto; Dr. Takuya Ogaki; Takuma Sakata; Prof. Dr. Yasunori Matsui; Prof. Dr. Keiji Okada; Dr. Hiroyasu Sato; Prof. Dr. Hiroshi Ikeda

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Synthesis and Structures of Oxygen-Bridged Triphenylamine in Neutral, Radical Cation, and Dication States

ASIAN JOURNAL OF ORGANIC CHEMISTRY

IF2.7

2025-04-28

PREAI

Prof. Dr. Shuichi Suzuki; Toshiro Ezaki; Dr. Masato Kuratsu; Atsuki Nagata; Prof. Dr. Daisuke Shiomi; Prof. Dr. Kazunobu Sato; Prof. Dr. Takeji Takui; Prof. Dr. Keiji Okada; Prof. Dr. Masatoshi Kozaki

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A Molecule Having 13 Unpaired Electrons: Magnetic Property of a Gadolinium(III) Complex Coordinated with Six Nitronyl Nitroxide Radicals

INORGANIC CHEMISTRY

IF4.7

2022-02-07

PREAI

Tanimoto, Ryu; Wada, Tomoyuki; Okada, Keiji; Shiomi, Daisuke; Sato, Kazunobu; Takui, Takeji; Suzuki, Shuichi; Naota, Takeshi; Kozaki, Masatoshi

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Syntheses and Properties of (Nitronyl nitroxide)-substituted Tri-phenylamine ortho-Bridged by Two Oxygen and Sulfur Atoms

CHEMISTRY-AN ASIAN JOURNAL

IF3.3

2020-12-01

PREAI

Yokoyama, Naoki; Tanaka, Nobuaki; Fujimoto, Natsumi; Tanaka, Rika; Suzuki, Shuichi; Shiomi, Daisuke; Sato, Kazunobu; Takui, Takeji; Kozaki, Masatoshi; Okada, Keiji

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Condensed Phenoxazine Dimer and Its Radical Cation

ORGANIC LETTERS

IF5

2020-08-19

OAAI

Miyamae, Takayuki; Haraguchi, Makoto; Tachi, Yoshimitsu; Suzuki, Shuichi; Kozaki, Masatoshi; Okada, Keiji

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Inhibition of Ligand Binding Ability of Three Porphyrins by an Organic Effector

CHEMISTRY-AN ASIAN JOURNAL

IF3.3

2020-01-28

OAAI

Nishimura, Tomoaki; Sasaki, Yoshito; Tachi, Yoshimitsu; Suzuki, Shuichi; Okada, Keiji; Kozaki, Masatoshi

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Spin-dependent electron transfer dynamics in a platinum-complex-donor-acceptor triad studied by transient-absorption detected magnetic field effect

JOURNAL OF CHEMICAL PHYSICS

IF3.1

2019-12-19

PREAI

Miura, Tomoaki; Miyaji, Kio; Horikoshi, Takafumi; Suzuki, Shuichi; Kozaki, Masatoshi; Okada, Keiji; Ikoma, Tadaaki

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Structures and Electronic Properties of Diisopropylaminoborane Substituted with Highly Electron-Rich π-Conjugated Systems and Their Oxidized States

BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN

IF3.8

2019-08-23

PREAI

Yoshida, Kohei; Suzuki, Shuichi; Kozaki, Masatoshi; Okada, Keiji

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Triplet Diradical-Cation Salts Consisting of the Phenothiazine Radical Cation and a Nitronyl Nitroxide

CHEMISTRY-A EUROPEAN JOURNAL

IF3.7

2019-04-30

PREAI

Tahara, Takuma; Suzuki, Shuichi; Kozaki, Masatoshi; Shiomi, Daisuke; Sugisaki, Kenji; Sato, Kazunobu; Takui, Takeji; Miyake, Yota; Hosokoshi, Yuko; Nojiri, Hiroyuki; Okada, Keiji

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Synthesis and Properties of Nitrogen-Containing Pyrenes

JOURNAL OF ORGANIC CHEMISTRY

IF3.6

2019-01-16

OAAI

Omura, Yuta; Tachi, Yoshimitsu; Okada, Keiji; Kozaki, Masatoshi

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Synthesis and Magnetic Properties of (Pyrrolidin-1-oxyl)-(Nitronyl Nitroxide)/(Iminonitroxide)-Dyads

CHEMISTRY-AN ASIAN JOURNAL

IF3.3

2018-12-17

PREAI

Tsujimoto, Haruki; Suzuki, Shuichi; Kozaki, Masatoshi; Shiomi, Daisuke; Sato, Kazunobu; Takui, Takeji; Okada, Keiji

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Preparation and Properties of a Polycyclic p-Quinodimethane with Two Oxygen Bridges and its Radical Cation in Comparison with the Isomeric o-Quinodimethane

CHEMISTRY-AN ASIAN JOURNAL

IF3.3

2018-10-23

OAAI

Sato, Chihiro; Suzuki, Shuichi; Okada, Keiji; Kozaki, Masatoshi

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Ligand-Binding Ability of a Porphyrin Core in a Dendrimer with Rigid Branched Terminal Components

JOURNAL OF ORGANIC CHEMISTRY

IF3.6

2018-08-13

PREAI

Akisada, Mami; Kimura, Ryo; Tachi, Yoshimitsu; Suzuki, Shuichi; Okada, Keiji; Kozaki, Masatoshi

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Radical Cation π-Dimers of Conjugated Oligomers as Molecular Wires: An Analysis Based on Nitronyl Nitroxide Spin Labels

CHEMISTRY-A EUROPEAN JOURNAL

IF3.7

2018-07-11

OAAI

Nishinaga, Tohru; Kanzaki, Yuki; Shiomi, Daisuke; Matsuda, Kenji; Suzuki, Shuichi; Okada, Keiji

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Chemical Stability of the 5-Mesityl-5-(nitronyl nitroxide)-2,2′:5′,2-ter(3,4-ethylenedioxythiophene) Radical Cation

BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN

IF3.8

2018-05-10

PREAI

Tahara, Takuma; Suzuki, Shuichi; Kozaki, Masatoshi; Nishinaga, Tohru; Okada, Keiji

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Radical Metalloids with N-Heterocyclic Carbene and Phenanthroline Ligands: Synthesis, Properties, and Cross-Coupling Reaction of [(Nitronyl Nitroxide)-2-ido]metal Complexes with Aryl Halides

BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN

IF3.8

2018-04-14

PREAI

Yamada, Kiyomi; Zhang, Xun; Tanimoto, Ryu; Suzuki, Shuichi; Kozaki, Masatoshi; Tanaka, Rika; Okada, Keiji

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Chemical Stimulus-responsive Folding and Unfolding of a Dendrimeric Assembly

CHEMISTRY-AN ASIAN JOURNAL

IF3.3

2017-12-05

PREAI

Kimura, Ryo; Suzuki, Shuichi; Okada, Keiji; Kozaki, Masatoshi

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(Azulene-1,3-diyl)-bis(nitronyl nitroxide) and (Azulene-1,3-diyl)-bis(iminonitroxide) and Their Copper Complexes

CHEMISTRY-AN ASIAN JOURNAL

IF3.3

2017-10-31

PREAI

Haraguchi, Makoto; Tretyakov, Evgeny; Gritsan, Nina; Romanenko, Galina; Gorbunov, Dmitry; Bogomyakov, Artem; Maryunina, Kseniya; Suzuki, Shuichi; Kozaki, Masatoshi; Shiomi, Daisuke; Sato, Kazunobu; Takui, Takeji; Nishihara, Sadafumi; Inoue, Katsuya; Okada, Keiji

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Oxidation State-Dependent Intramolecular Electronic Interaction of Carbazole-Based Azacyclophanes with 9,10-Anthrylene Units

JOURNAL OF ORGANIC CHEMISTRY

IF3.6

2017-09-20

PREAI

Iwanaga, Tetsuo; Yamauchi, Tomokazu; Toyota, Shinji; Suzuki, Shuichi; Okada, Keiji

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Research Directions