2017 Fiscal Year Final Research Report
Development of organic conducting and magnetic materials based on high-symmetric molecules for thermoelectric application
| Project/Area Number |
15K17901
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Organic and hybrid materials
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| Research Institution | Kyoto University |
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Principal Investigator |
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| Research Collaborator |
ISHIKAWA Manabu 京都大学, 環境安全保健機構, 研究員 (80563923)
OTSUKA Akihiro 京都大学, 大学院理学研究科, 准教授 (90233171)
YAMOCHI Hideki 京都大学, 大学院理学研究科, 教授 (20182660)
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| Project Period (FY) |
2015-04-01 – 2018-03-31
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| Keywords | 分子性導体 / 分子磁性 / 高対称性分子 / 電荷移動錯体 |
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| Outline of Final Research Achievements |
C3-symmetric molecules 1 and 2 were prepared via Sille coupling reaction between 2,5,8-tris(trimethylstannyl)benzo[1,2-b:3,4-b':5,6-b"]trithiophene and 2-(4H-thiopyran-4-ylidene)-4-bromo-1,3-dithiole (TPDT-Br) or 4,5-ethylenedioxy-4'-iodotetrathiafulvalene (EDO-TTF-I). Mixing and grinding 1 with TCNQ by the addition of small amount of acetonitrile and washing with acetonitrile afforded a charge transfer (CT) complex as black powder. The molecular charge of 1 was estimated as +1 by elemental analysis and vibrational spectroscopy. The electrical conducting and magnetic properties of CT complex were semiconducting behaviors. Theoretical analysis found that the charge is localized on one TPDT moiety of 1 upon one-electron oxidation. Therefore, molecule 1 has the charge of +1 with C1 symmetry, and shows the intramolecular charge disproportionation.
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| Free Research Field |
物性有機化学
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