2012 Fiscal Year Final Research Report
Spin-Controlled Approach toward Development of Molecular Functions and Properties for Open-Shell Materials
| Project/Area Number |
22350066
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Functional materials chemistry
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| Research Institution | Osaka City University |
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Principal Investigator |
OKADA Keiji 大阪市立大学, 大学院・理学研究科, 教授 (50152301)
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| Co-Investigator(Kenkyū-buntansha) |
SHIOMI Daisuke 大阪市立大学, 大学院・理学研究科, 准教授 (40260799)
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| Co-Investigator(Renkei-kenkyūsha) |
SUZUKI Shuichi 大阪市立大学, 大学院・理学研究科, 講師 (80433291)
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| Project Period (FY) |
2010 – 2012
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| Keywords | 電気 / 磁気的機構 |
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| Research Abstract |
In this project, we aim to develop three subjects in which we have recently found interesting seeds:
(1) Development of molecular magnets based on radical-substituted radical cations
(2) development of strong interaction systems involving molecular spins, and
(3) development of highly efficient energy conversion systems utilizing spin-selective formation of radical ion pairs.
(1) We developed two new magnets based onradical-substituted radical cations.
(2) Two neutral diradicals having large positive exchange interactions were developed. A new π-donor substituted by three radicals with a doublet ground state was prepared and reversibly oxidized to a diradical cation with a triplet ground state havinga l
(3) A new triad system with a strong absorption in the visible region due to Pt-porphyrine was prepared. The photoexcitation of the Pt-porphyrine moiety produced the radical ion pair with 680 μs lifetime.
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[Journal Article] Trinitroxide-Trioxytriphenylamine: Spin-State Conversion from Triradical Doublet to Diradical Cation Triplet by Oxidative Modulation of a π-Conjugated System2012
Author(s)
S. Suzuki, A. Nagata, M. Kuratsu, M. Kozaki, R. Tanaka, D. Shiomi, K. Sugisaki, K. Toyota, K. Sato, T. Takui, K. Okada
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Journal Title
Angew. Chem. Int. Ed.
Volume: 51
Pages: 3193-3197
DOI
Peer Reviewed
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[Journal Article] (Nitronyl Nitroxide)- substituted Trioxytriphenylamine Radical Cation Tetrachlorogallate Salt: A 2p Electron-Based Weak Ferromagnet Composed of Triplet Diradical Cation2012
Author(s)
M. Kuratsu, S. Suzuki, M. Kozaki, D. Shiomi, K. Sato, T. Takui, T. Kanzawa, Y. Hosokoshi, X-Z. Lan, Y. Miyazaki, A. Inaba, K. Okada
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Journal Title
Chem. Asian. J.
Volume: 7
Pages: 1604-1609
DOI
Peer Reviewed
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[Presentation]2012
Author(s)
X. Zhang, S. Suzuki, M. Kozaki, D. Shiomi, K. Sato, T. Takui, K. Okada
Organizer
The 6th Russian-Japanese Workshop on Open Shell Compounds and Molecular Spin Devices
Place of Presentation
Rostov-on-Don, Russia
Year and Date
20120909-10
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[Presentation] Photoinduced Charge Separation in Bis(2-pyridylimino)iso- indoline-Pt-acetylides Linked with Dianisylphenylamine and Naphthalene Diimide2012
Author(s)
T. Horikoshi, S. Suzuki, A. Karimata, R. Sugimura, M. Kozaki, K. Kimoto, K. Nozaki, H. Mastushita, N. Ikeda, K. Akiyama, K. Okada
Organizer
The 2nd International Symposium on Electron Spin Science
Place of Presentation
Miyagi, Japan
Year and Date
20120723-25
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[Presentation] Radical-Substituted Radical Cations: Versatile Spin Building Blocks of Molecule-Based Magnets2010
Author(s)
K.Okada, M. Kuratsu, Y. Masuda, S. Suzuki, M. Kozaki, D. Shiomi, T. Takui, Y. Hosokoshi, X.-Z. Lan, A. Inaba, Y. Miyazaki
Organizer
The 12th International Conference on Molecule-Based Magnets (ICMM2010)
Place of Presentation
Beijing, China
Year and Date
20101008-12
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