Creation of Stable, Organic Diradicaloids with Polycyclic Conjugated Framework and Exploration of Their Function
Project/Area Number |
18K05089
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Research Category |
Grant-in-Aid for Scientific Research (C)
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Allocation Type | Multi-year Fund |
Section | 一般 |
Review Section |
Basic Section 33010:Structural organic chemistry and physical organic chemistry-related
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Research Institution | The University of Shiga Prefecture |
Principal Investigator |
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Project Period (FY) |
2018-04-01 – 2021-03-31
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Project Status |
Completed (Fiscal Year 2020)
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Budget Amount *help |
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2020: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2019: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2018: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
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Keywords | ジラジカル / ラジカルカチオン / 酸化還元 / 複素芳香環 / 縮合多環化合物 / 共役炭化水素 / トリフェニルアミン / キノジメタン / 芳香族性 / 近赤外吸収 / 複素環 |
Outline of Final Research Achievements |
Open-shell singlet diradicaloids with a polycyclic π-conjugated backbone are of considerable interest due to the fascinating nature of their π-bonds and owing to their unique optical, electrochemical, and magnetic properties. In this work, we designed aromatics-fused dicyclopentanaphthalenes as well as difluorenofurans as novel diradicaloids possessing a para-quinodimethane moiety and established their efficient synthetic routes. Detailed structural and spectroscopic investigation on their physicochemical properties revealed distinctive diradical characters and electronic properties of redox species. For the development of diradicaloids including nitrogen atoms, we also designed and synthesized sulfur and carbon-bridged triphenylamine and isolated its radical cationic salt.
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Academic Significance and Societal Importance of the Research Achievements |
本研究により,明確なジラジカル性と高い安定性を併せ持つジラジカロイドを相次いで創出し,まずジラジカル性を精密制御する手法を確立した。次に,数百ミリグラムスケールで合成が可能な稀有なジラジカロイドを開発し,機能性物質への展開の糸口を見出した。さらに,大気下でも安定なトリアリールアミンラジカルカチオンの開発にも成功した。今後の継続的な物質開発研究により,開殻性に根ざした機能創出が期待できる。
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Report
(4 results)
Research Products
(33 results)
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[Journal Article] Arylene-Hexaynylene and -Octaynylene Macrocycles: Extending the Polyyne Chains Drives Self-Association by Enhanced Dispersion Force2020
Author(s)
Shin-ichiro Kato, Ryo Kumagai, Tsukasa Abe, Chisa HIguchi, Yoshihito Shiota, Kazunari Yoshizawa, Nobutaka Takahashi, Koji Yamamoto, Md Zakir Hossain, Kazuhiro Hayashi, Takashi Hirose, Yosuke Nakamura
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Journal Title
Chemical Communications
Volume: 57
Issue: 5
Pages: 576-579
DOI
Related Report
Peer Reviewed
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[Journal Article] Synthesis, Structures, and Properties of Neutral and Radical Cationic S,C,C-Bridged Triphenylamine2020
Author(s)
Shin-ichiro Kato, Takanori Matsuoka, Shuichi Suzuki, Motoko S. Asano, Toshitada Yoshihara, Seiji Tobita, Taisuke Matsumoto, Chitoshi Kitamura
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Journal Title
Org. Lett.
Volume: 22
Issue: 2
Pages: 734-738
DOI
Related Report
Peer Reviewed
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[Journal Article] Chemical Transformations of Push-Pull Fluorenones: Push-Pull Dibenzodicyanofulvenes as well as Fluorenone- and Dibenzodicyanofulvene-Tetracyanobutadiene Conjugates2020
Author(s)
Shin-ichiro Kato, Tomokazu Kijima, Yoshihito Shiota, Tsukasa Abe, Satoshi Kuwako, Hidenori Miyauchi, Naoki Yoshikawa, Kazunari Yoshizawa, Toshitada Yoshihara, Seiji Tobita, Yosuke Nakamura
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Journal Title
Organic & Biomolecular Chemistry
Volume: -
Issue: 22
Pages: 4198-4209
DOI
Related Report
Peer Reviewed
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[Journal Article] Open-Shell Singlet Diradicaloid Difluoreno[4,3-b:3′,4′-d]furan and Its Radical Cation and Dianion2020
Author(s)
Sakura Mori, Motoko Akita, Shuichi Suzuki, Motoko S. Asano, Michihisa Murata, Tsuyoshi Akiyama , Taisuke Matsumoto, Chitoshi Kitamura, Shin-ichiro Kato
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Journal Title
Chem.Comm.
Volume: -
Issue: 44
Pages: 5881-5884
DOI
Related Report
Peer Reviewed
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[Journal Article] Trithiazolyl-1,3,5-triazines bearing decyloxybenzene moieties: synthesis, photophysical and electrochemical properties, as well as self-assembly behavior2018
Author(s)
S.-i. Kato, S. Jin, T. Kimura, N. Yoshikawa, D. Nara, K. Imamura, Y. Shiota, K. Yoshizawa, R. Katoono, T. Yamanobe, H. Uehara, Y. Nakamura
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Journal Title
Organic & Biomolecular Chemistry
Volume: 16
Issue: 19
Pages: 3584-3595
DOI
Related Report
Peer Reviewed
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[Journal Article] 2,4,5,7,9,10-Hexaethynylpyrenes: Synthesis, Properties, and Self-Assembly2018
Author(s)
Shin-ichiro. Kato, Haruka Kano, Ken-ichi Irisawa, Naoki Yoshikawa, Ryuichiro Yamamoto, Chitoshi Kitamura, Daiki Nara, Takeshi Yamanobe, Hiroki Uehara, Yosuke Nakamura
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Journal Title
Organic Letters
Volume: 20
Issue: 23
Pages: 7530-7534
DOI
Related Report
Peer Reviewed
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