2016 Fiscal Year Final Research Report
Development of amphiphilic thienoisoindigo polymers and investigation of device performance based on fiber formation
| Project/Area Number |
26410087
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Functional solid state chemistry
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| Research Institution | Tokyo Institute of Technology |
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Principal Investigator |
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| Project Period (FY) |
2014-04-01 – 2017-03-31
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| Keywords | 有機半導体 / チエノイソインジゴ / 電界効果トランジスタ |
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| Outline of Final Research Achievements |
In this study, we have designed and synthesized hole-transport thienoisoindigo (TII) based polymers bearing near infrared region absorption arising from narrow energy gap. The long wavelength absorption specifically characteristic of TII polymers is coming from quinoidal structure of TII unit. In addition, we have developed useful synthetic approach for large scale preparation of H-intact TII unit at the N-position. Of particular note is that H-intact TII unit has the synthetic diversity to attaching various types of solubilizing side-chain groups. In the single crystal, H-intact TII form densely packed two-dimensional conduction path via intermolecular hydrogen-bonding, resulting in higher ambipolar performance in organic field effect transistors (OFETs) than that of N-substituted TII. Notably, H-intact TII substituted with flanking phenyl group exhibits well balanced hole and electron mobilities of 0.1 cm2/Vs.
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| Free Research Field |
物性有機化学
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