研究者詳細 - 田中　健太郎

論文 - 田中　健太郎

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Synthesis of Bis{meso-Tetrakis(4-N-alkylpyridiniumyl)porphyrinato}cerium and Its Redox Switching Behavior 招待有り査読有り国際誌

Toshio Nishino, Yasuyuki Yamada, Ayumi Yamamoto, Kentaro Tanaka

Molecules 26 巻 ( 4 ) 頁： 790 - 790 2021年2月

担当区分：最終著者,　責任著者記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：MDPI AG

A novel double-decker porphyrin complex, bis{meso-tetrakis(4-N-alkylpyridiniumyl)porphyrinato}cerium, was prepared. Electrochemical measurements revealed that this complex exhibited reversible redox waves corresponding to a 1e– redox reaction of the cerium center. Treating the complex alternately with an oxidant and a reductant resulted in the reversible redox switching between the oxidized and reduced states in an organic solvent.

DOI： 10.3390/molecules26040790

High catalytic methane oxidation activity of monocationic μ-nitrido-bridged iron phthalocyanine dimer with sixteen methyl groups 査読有り国際誌

Yasuyuki Yamada, Jyunichi Kura, Yuka Toyoda, Kentaro Tanaka

Dalton Transactions 50 巻 ( 19 ) 頁： 6718 - 6724 2021年

担当区分：最終著者,　責任著者記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：Royal Society of Chemistry (RSC)

<p>High catalytic methane oxidation activity of a μ-nitrido-bridged iron phthalocyanine dimer was achieved by introducing 16 electron-donating methyl groups onto the phthalocyanine rings.</p>

DOI： 10.1039/d1dt00941a

Synthesis of a monocationic μ-nitrido-bridged iron porphycene dimer and its methane oxidation activity 査読有り

Yasuyuki Yamada, Yusuke Miwa, Yuka Toyoda, Tomoo Yamaguchi, Shigehisa Akine, Kentaro Tanaka

Dalton Transactions 50 巻 ( 45 ) 頁： 16775 - 16781 2021年

担当区分：最終著者,　責任著者記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：Royal Society of Chemistry (RSC)

Herein, we synthesized a monocationic μ-nitrido-bridged iron porphycene dimer, a structural analogue of a monocationic μ-nitrido-bridged iron phthalocyanine dimer, which is known as one of the most potent molecule-based catalysts for methane oxidation.

DOI： 10.1039/d1dt02922c

Structure and dynamics of a chiral cubanoid complex composed of lithium and salphen 査読有り国際誌

Shin-ichiro Kawano, Kyohei Tomita, Kentaro Tanaka

Inorganica Chimica Acta 512 巻頁： 119894 - 119894 2020年11月

Development of functional molecular assemblies based on programmable construction of face-to-face assemblies of metallo-porphyrinoids 招待有り査読有り国際誌

Yasuyuki Yamada, Kentaro Tanaka

Journal of Inclusion Phenomena and Macrocyclic Chemistry 96 巻 ( 3-4 ) 頁： 197 - 213 2020年4月

μ-Nitrido-bridged iron phthalocyanine dimer bearing eight peripheral 12-crown-4 units and its methane oxidation activity 査読有り国際誌

Yasuyuki Yamada, Jyunichi Kura, Yuka Toyoda, Kentaro Tanaka

New Journal of Chemistry 44 巻 ( 44 ) 頁： 19179 - 19183 2020年

担当区分：最終著者,　責任著者記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：Royal Society of Chemistry (RSC)

<p>A novel μ-nitrido-bridged iron phthalocyanine dimer with eight peripheral 12-crown-4 units was synthesized and its methane oxidation activity was investigated.</p>

DOI： 10.1039/d0nj04601a

Liquid-crystalline Metallomacrocycles Composed of Bis(hydroxypyridono)toluene Ligand and Cu2+ Ions. 査読有り国際誌

Shin-Ichiro Kawano, Kohei Ideta, Tomohiko Banno, Kentaro Tanaka

Chemistry, an Asian journal 14 巻 ( 23 ) 頁： 4415 - 4419 2019年12月

担当区分：最終著者,　責任著者記述言語：英語掲載種別：研究論文（学術雑誌）

A series of π-extended chelating scaffolds incorporating two hydroxypyridone moieties were synthesized. X-ray crystallographic analysis revealed that a bis(hydroxypyridono)toluene ligand possessed a unique π-extended structure and exhibited efficient phase segregation from the aliphatic chains attached at the heterocyclic nitrogen. The bis-bidentate ligand formed a metal-coordination-induced macrocycle with Cu2+ ions. During the complexation, a spectral change in the visible region was induced. Furthermore, the successful development of a liquid crystal of the metallomacrocycle with appropriate side chains was achieved. Examples of liquid-crystalline macrocycles formed via metal-mediated self-assembly are still rare. Among them, the macrocycle described in this paper showed an obvious hexagonal columnar phase reflecting the three-fold symmetric planar structure of the mesogenic metal complex.

DOI： 10.1002/asia.201901323

PubMed

Catalytic methane oxidation by a supramolecular conjugate based on a mu-nitrido-bridged iron porphyrinoid dimer 査読有り国際誌

Yamada, Yasuyuki, Morita, Kentaro, Mihara, Nozomi, Igawa, Kazunobu, Tomooka, Katsuhiko, Tanaka, Kentaro

NEW JOURNAL OF CHEMISTRY 43 巻 ( 29 ) 頁： 11477 - 11482 2019年8月

担当区分：最終著者,　責任著者記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：ROYAL SOC CHEMISTRY

Catalytic methane oxidation was conducted using a mu-nitrido-bridged dinuclear iron complex of a fourfold rotaxane heterodimer of a porphyrin and a phthalocyanine. Extension of the mu-stacked structure of the four-fold rotaxane-based mu-nitrido-bridged iron porphyrinoid dimer by supramolecular complexation with an additional tetraanionic porphyrin apparently increased the methane conversion ability.

DOI： 10.1039/c9nj02210d

Web of Science

Improved synthesis of monocationic mu-nitrido-bridged iron phthalocyanine dimer with no peripheral substituents 査読有り国際誌

Yamada Yasuyuki, Sugiura Takuya, Morita Kentaro, Ariga-Miwa Hiroko, Tanaka Kentaro

INORGANICA CHIMICA ACTA 489 巻頁： 160 - 163 2019年4月

Near-infrared absorption by intramolecular charge-transfer transition in 5,10,15,20-tetra(N-carbazolyl)porphyrin through protonation 査読有り国際誌

Kawano Shin-ichiro, Kawada Sae, Kitagawa Yasutaka, Teramoto Rena, Nakano Masayoshi, Tanaka Kentaro

CHEMICAL COMMUNICATIONS 55 巻 ( 20 ) 頁： 2992 - 2995 2019年3月

Site-Selective Supramolecular Complexation Activates Catalytic Ethane Oxidation by a Nitrido-Bridged Iron Porphyrinoid Dimer 査読有り国際誌

Nozomi Mihara, Yasuyuki Yamada, Hikaru Takaya, Yasutaka Kitagawa, Kazunobu Igawa, Katsuhiko Tomooka, Hiroshi Fujii, Kentaro Tanaka

Chemistry - A European Journal 25 巻 ( 13 ) 頁： 3369 - 3375 2019年3月

担当区分：最終著者,　責任著者記述言語：英語掲載種別：研究論文（学術雑誌）

© 2019 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim Development of supramolecular methods to further activate a highly reactive intermediate is a fascinating strategy to create novel potent catalysts for activation of inert chemicals. Herein, a supramolecular approach to enhance the oxidizing ability of a high-valent oxo species of a nitrido-bridged iron porphyrinoid dimer that is a known potent molecular catalyst for light alkane oxidation is reported. For this purpose, a nitrido-bridged dinuclear iron complex of porphyrin-phthalocyanine heterodimer 3 5+ , which is connected through a fourfold rotaxane, was prepared. Heterodimer 3 5+ catalyzed ethane oxidation in the presence of H 2 O 2 at a relatively low temperature. The site-selective complexation of 3 5+ with an additional anionic porphyrin (TPPS 4− ) through π–π stacking and electrostatic interactions afforded a stable 1:1 complex. It was demonstrated that the supramolecular post-synthetic modification of 3 5+ enhances its catalytic activity efficiently. Moreover, supramolecular conjugates achieved higher catalytic ethane oxidation activity than nitrido-bridged iron phthalocyanine dimer, which is the most potent iron-oxo-based molecular catalyst for light-alkane oxidation reported so far. Electrochemical measurements proved that the electronic perturbation from TPPS 4− to 3 5+ enhanced the catalytic activity.

DOI： 10.1002/chem.201805580

Web of Science

Scopus

PubMed

Specific and Oriented Encapsulation of Fullerene C70 into a Supramolecular Double-Decker Cage Composed of Shape-Persistent Macrocycles 査読有り国際誌

Kawano Shin-ichiro, Fukushima Tomoaki, Tanaka Kentaro

ANGEWNDTE CHEMIE-INTERNATIONAL EDITION 57 巻 ( 45 ) 頁： 14827 - 14831 2018年11月

Liquid-crystalline Phthalocyanine with Short Intercolumnar Distance and Variation of the Liquid Crystallinity Induced by Square-planar Metal Ions 査読有り国際誌

Kawano Shin-ichiro, Yamada Yasuyuki, Shu Rongfang, Ishihara Yu, Tanaka Kentaro

CHEMISTRY LETTERS 47 巻 ( 10 ) 頁： 1262 - 1264 2018年10月

Programmable arrangement of metal ions in a cofacially stacked assembly of porphyrinoids toward molecular tags 査読有り

Mihara Nozomi, Yamada Yasuyuki, Furukawa Ko, Kato Tatsuhisa, Tanaka Kentaro

DALTON TRANSACTIONS 47 巻 ( 20 ) 頁： 7044-7049 2018年5月

Columnar Liquid-Crystalline Macrocycles Synthesized via Metal Ion-Assisted Self-Assembly 査読有り

Kawano Shin-ichiro, Murai Takafumi, Harada Takahiro, Tanaka Kentaro

INORGANIC CHEMISTRY 57 巻 ( 7 ) 頁： 3913-3919 2018年4月

Columnar Liquid Crystals from a Giant Macrocycle Mesogen 査読有り

Kawano Shin-ichiro, Kato Masahiro, Soumiya Shinya, Nakaya Masato, Onoe Jun, Tanaka Kentaro

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION 57 巻 ( 1 ) 頁： 167-171 2018年1月

Intramolecular strong electronic coupling in a discretely H-aggregated phthalocyanine dimer connected with a rigid linker

Yasuyuki Yamada, Yasuyuki Yamada, Yasuyuki Yamada, Katsuhiko Nawate, Tomoaki Maeno, Kentaro Tanaka

Chemical Communications 54 巻頁： 8226-8228 2018年1月

掲載種別：研究論文（学術雑誌）

© 2018 The Royal Society of Chemistry. Preparation of an accurate assembly of phthalocyanines is rather difficult because of the high aggregation property of phthalocyanines. In this study, a novel discrete phthalocyanine dimer was prepared in which the relative configuration of each component was tightly and accurately fixed in an H-aggregate form by a rigid U-shaped linker. Electrochemical measurements showed that there were strong intramolecular electronic interactions between the two phthalocyanines.

DOI： 10.1039/c8cc04335c

Scopus

Dynamic Molecular Invasion into a Multiply Interlocked Catenane 査読有り

Yamada Yasuyuki, Itoh Ryohei, Ogino Sayaka, Kato Tatsuhisa, Tanaka Kentaro

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION 56 巻 ( 45 ) 頁： 14124-14129 2017年11月

Electronic perturbation of supramolecular conjugates of porphyrins and phthalocyanines 査読有り

Mihara Nozomi, Yamada Yasuyuki, Akine Shigehisa, Sugimoto Kunihisa, Tanaka Kentaro

CHEMICAL COMMUNICATIONS 53 巻 ( 14 ) 頁： 2230-2232 2017年2月

Programmable Arrangement of Heterometal Ions in a Supramolecular Array of Porphyrin and Phthalocyanine 査読有り

Nozomi Mihara, Yasuyuki Yamada, and Kentaro Tanaka

Bull. Chem. Soc. Jpn. 90 巻頁： 427-435 2017年

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