Development of Directionally Flexible pi-Conjugated Molecules and the Structural Control
Project/Area Number |
15K17849
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Research Category |
Grant-in-Aid for Young Scientists (B)
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Allocation Type | Multi-year Fund |
Research Field |
Functional solid state chemistry
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Research Institution | National Institute for Materials Science |
Principal Investigator |
Takai Atsuro 国立研究開発法人物質・材料研究機構, 機能性材料研究拠点, 研究員 (90746728)
|
Project Period (FY) |
2015-04-01 – 2017-03-31
|
Project Status |
Completed (Fiscal Year 2016)
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Budget Amount *help |
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2016: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2015: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
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Keywords | 分子スイッチ / π共役分子 / 超分子 / 電子状態 / 相転移 / π共役系化合物 / 構造変化 |
Outline of Final Research Achievements |
I designed a new supramolecular building block (NDI-Fc-NDI) containing a molecular rotor unit in which naphthalenediimides (NDIs) is directionally flexible around ferrocene (Fc) rotational unit and the NDI conformation is responsive to external stimuli. The NDI-Fc-NDI fibrous supramolecular polymer exhibits multiple phase transitions and electronic property changes associated with the conformational changes at different temperatures. Such NDI-Fc conjugates are promising building blocks for n-type organic semiconductors with optimal optical absorption. I also developed a fluorene-based overcrowded alkene derivative which has a highly distorted carbon-carbon double bond and exhibits unique electronic and spin states in the ground and excited states.
Those results have provided important mechanistic insights into π-conjugated molecular assemblies and design features of photofunctional and/or stimuli-responsive π-systems.
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Report
(3 results)
Research Products
(16 results)
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[Journal Article] The effect of a highly twisted C=C double bond on the electronic structures of 9,9'-bifluorenylidene derivatives in the ground and excited states2017
Author(s)
A. Takai, D. J. Freas, T. Suzuki, M. Sugimoto, J. Labuta, R. Haruki, R. Kumai, S.-i. Adachi, H. Sakai, T. Hasobe, Y. Matsushita, M. Takeuchi
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Journal Title
Organic Chemistry Frontier
Volume: 4
Issue: 5
Pages: 650-657
DOI
Related Report
Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
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