| Project/Area Number |
17K14478
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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 |
Functional solid state chemistry
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| Research Institution | Institute of Physical and Chemical Research |
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Principal Investigator |
WANG CHENGYUAN 国立研究開発法人理化学研究所, 創発物性科学研究センター, 特別研究員 (20772932)
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| Project Period (FY) |
2017-04-01 – 2019-03-31
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| Project Status |
Completed (Fiscal Year 2018)
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| Budget Amount *help |
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2018: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Fiscal Year 2017: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
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| Keywords | β-Alkylthionation / Thienoacene / Crystal engineering / OFETs / Thienoacenes / Alkylthionation / Packing / Molecular Orientation / Crystal Engineering / Semiconductors |
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| Outline of Final Research Achievements |
In this research project firstly efficient chemistry was established to straightforwardly introduce alkylthio groups at the β-position of various thienoacenes, through which the targeted thienoacene-based organic semiconductors were successfully developed. The packing structures of the as-synthesized materials were studied by single-crystal XRD analysis. The study revealed that by attaching certain alkylthio groups at the β-position of linear thienoacenes, the corresponding crystal structures could be generally and selectively altered into the rubrene-like packing structure, in which efficient frontier orbital overlap could be realized.
Single-crystal and thin-film OFETs were fabricated based on the as-developed materials, and some of them showed excellent performance even rivaling rubrene. The study manifested that the packing design through β-alkylthionation in thienoacenes could be a real rational material design strategy to develop high performance organic semiconductors.
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| Academic Significance and Societal Importance of the Research Achievements |
The research project is the first systematic study of crystal engineering of thienoacenes by alkylthionation to develop high performance organic semiconductors for OFETs, which opens a new door to rationally design materials applied in organic electronics by control of intermolcular interactions.
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